2003 Mercury Mountaineer Engine Parts

Name: Engine Balance Shaft Bearing Set
Brand: Sealed Power
SKU: 1892M
Price: 52.99 USD

Below you will find various in-demand Mercury Engine Parts, components and accessories for your 2003 Mountaineer. Advance Auto Parts has popular Mountaineer parts like Engine Gaskets and Seals, Engine Mounts, Engine Timing Parts and more. You’ll also find aftermarket and OEM Engine Parts for other Mountaineer model years including 2001, 2002, 2004, 2005, 2006, 2007, 2008, 2009, 2010 and more. Select a category of 2003 Mercury Mountaineer Engine Parts below and start saving instantly.

Popular 2003 Mercury Mountaineer Engine Parts Categories

Valve Covers

Engine Valve Lifters

Valve Cover Gaskets

Engine Timing Chain Kits

Oil Pumps

Oil Pan Gaskets

Camshaft Position Sensors

OE Engine Oil Coolers

Rear Main Seal Sets

Cylinder Head Bolt Sets

Crankshaft Position Sensors

Timing Covers

Engine Crankshaft Kits

Harmonic Balancers

Timing Cover Gasket Sets

Cylinder Head Gasket Sets

Balance Shaft Kits

Timing Cam Gears

Engine Mounts

Cylinder Head Temperature Sensors

Gasket Kit Sets

Oil Pans

Engine Oil Cooler Accessories

Engine Oil Dip Stick Tubes

Cylinder Head Gaskets

Camshaft Position Sensor Connectors

Engine Oil Dipsticks

Engine Camshaft Bolts

Timing Chain Tensioners

Engine Oil Pump Pickup Tube and Screens

Rubber Freeze Plugs

Timing Cover Repair Sleeves

Main Bearing Repair Sleeves

Oil Pump Shafts

Rocker Arms

Balance Shaft Chain Tensioners

Engine Valve Stem Seals

Piston and Liners

Oversized Main Bearings

Standard Rod Bearing Sets

Oil Pump Kits

Standard Piston Rings

Camshaft Position Solenoid Connectors

Timing Chain Guides

Standard Individual Rod Bearings

Engine Valves

Standard Single Pistons

Balance Shaft Bearings

Timing Chain Tensioner Gasket Sets

Balance Shaft Chain Guides

Rocker Arm Shaft Plugs

Remanufactured Engines

Cylinder Heads

Engine Timing Chain Kit with Water Pump

Piston Pin Bushing Sets

Engine Assembly Lube

Engine Oil Pump Primers

Valve Train Set Up Spring Set

Engine Oil Pressure Indicator Connector

Essential Engine Parts for 2003 Mercury Mountaineers

from

$52.99

Sealed Power« parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.

Product Features:

Bi-metal aluminum alloy
For shafts in crankcase
Front drive bushing not included
Utilizes ISO & QS certified manufacturing
Meets or exceeds OEM specifications

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$44.49

Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.

Product Features:

Helps improve cylinder sealing for less blow-by
Retains standard ring gaps in top groove
DUROSHIELD« skirt-coated piston
Moly-graphite coating extends engine life
Reduces friction for higher fuel economy
Prevents damage from inadequate lubrication on start-up

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$20.99

Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.

Product Features:

Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
Sealed connections (where applicable) to prevent environmental corrosion and performance issues
Global coverage for import and/or domestic applications
OE specified wire gauge to ensure a reliable electrical connection
Designed to meet or exceed OE specifications in form, fit and function

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$46.99

Along with the timing chain, tensioners, and guides, sprockets are an integral component within the timing system. Timing gears and sprockets are available as part of complete timing kits as well as for individual purchase and installation

Product Features:

Featuring precision-tooled or machined tooth form and precision-machined bore for true fit, timing chain sprockets offer reliability and dependability for engine rebuilds and typical replacement jobs
Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing
CAD designed and manufactured using premium materials
Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Refer to our online catalog for detailed application-specific information

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$102.99

A-Series bi-metal aluminum alloy
Greater seizure resistance than tri-metal material
Reduces dramatically or eliminates bearing wear
Exacting tolerances
Meets or exceeds OEM specifications
Made with silicon to provide greater surface hardness

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$33.99

Carquest Premium crankshaft position sensors are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium crankshaft and camshaft sensors are engineered with technology that provides increased output accuracy through a stronger, more consistent signal. Our sensors are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Carquest Premium crankshaft and camshaft position sensors undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium sensors are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:

Engineered with technology that provides increased accuracy with a stronger, more consistent signal
Sensors are based on proven hall effect and variable reluctance technology
Includes OE-style brackets, hold downs, hardware, or spacers as needed for each application.
O-rings and seals are included if required.
Weather-tight connectors prevent leaks and corrosion for better reliability.
Extensive design validation testing and 100% end-of-line tested.
Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

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$288.99

Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

Product Features:

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Engineered and manufactured specifically for the repair environment
Unsurpassed quality you can trust
Includes all parts needed to complete the repair

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$14.99

Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

Product Features:

Engine$aver Hardware cost-saving application
Repairs worn sealing surfaces to assure a leak free repair
Meets or exceeds all original equipment specifications
Engineered and manufactured specifically for repair applications
Unsurpassed quality you can trust
Validated for fit, form, and function

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$5.49

Steel-backed bronze alloy lining with overplate
Popular for fatigue resistance & strength
Provides conformability required for older apps
Our standard material is comparable to competitors performance bearing
Note – This material offers less resistance to wear & corrosion than other materials.
Utilizes ISO & QS certified manufacturing

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$355.99

Made In USA. Melling Engine Oil Priming Tank was developed as a way for engine builders to safely pre-prime the engine with oil prior to initial engine startup. The priming tank, when filled with clean oil and air pressure pumps oil into all of the critical areas of the new engine quickly and safely.

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$113.99

Product Features:

Superior Wear Protection – Formulated with extreme pressure additives to protect engine components from metal-to-metal contact during initial startup
High Tackiness – Stays in place during assembly and storage, ensuring consistent lubrication exactly where it’s needed
Broad Compatibility – Safe for use with all engine components including camshafts, lifters, bearings, and valve train parts
Easy Startup Support – Reduces friction and prevents dry starts by providing instant lubrication during first engine fire-up

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$212.99

PROPRIETARY COATING – Nonstick anti-friction coating seals small surface scratches and imperfections
SEALING TECHNOLOGIES – Exclusive sealing innovations and technologies with proprietary materials and unique design features to ensure a superior seal for your repair
NO RETORQUE DESIGN – Steel core helps eliminate the need for retorquing head bolts
STRONG AND DURABLE – Features graphite or reinforced fiber facing material and steel armor for strength and durability
DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces

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$156.99

Face of top rings coated with latest generation Plasma-Moly
Decreases friction
Very resistant to scuffing
Exacting tolerances
Meets or exceeds OEM specifications

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$30.99

Available in kits including front cover gasket, crankshaft seal, fuel pump and water pump gasket or including cover gasket and front seal.

Product Features:

Timing Cover Gasket And Oil Seal Kit

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$872.99

Meet or exceed OEM performance requirements, ensuring a quiet and maintenance-free experience. Utilizes the latest in design and technology to offer a complete chain kit solution. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance. CAD designed and manufactured using premium materials. Refer to our online catalog for detailed application-specific information. SET INCLUDES: 9-5340 Engine Timing Chain Tensioner Guide (1 EA), 9-5341 Engine Timing Chain Tensioner Guide (1 EA), 9-5428 Engine Timing Chain Guide (1 EA), 9-5429 Engine Timing Chain Guide (1 EA), 9-5432 Engine Timing Chain Tensioner (1 EA), 9-5433 Engine Timing Chain Tensioner (1 EA), C387 Engine Timing Chain (2 EA), S869 Engine Timing Crankshaft Sprocket (1 EA), VC100 Engine Variable Valve Timing (VVT) Sprocket (2 EA), VTS100 Engine Variable Valve Timing (VVT) Solenoid (2 EA), WP104 Engine Water Pump (1 EA).

Product Features:

Timing Chain Kits with Water Pump includes all components for a quick and efficient replacement
Utilizes the latest in design and technology to offer a complete chain kit solution
Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
CAD designed and manufactured using premium materials
Refer to our online catalog for detailed application-specific information

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$37.99

DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
SUPERIOR SEAL – Manufactured with rubber compounds to ensure a consistent and long-life seal across the entire oil pan
PREVENTS OVERTIGHTENING – Torque limiters help eliminate overtightening and gasket splitting and extruding (where applicable)
OE-STYLE REPLACEMENT GASKET – Engineered for OE-style molded rubber gasket replacement
EVERY PART FOR THE REPAIR – Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
ENGINEERING EXPERTISE – Parts are designed, tested, validated and approved by Fel-Pro engineers through rigorous research and development
ENGINEERING EXPERTISE – Parts are designed, tested, validated and approved by Fel-Pro engineers through rigorous research and development

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$23.99

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Engineered for the sealing repair environment
Validated for fit, form and function
Unsurpassed quality you can trust

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$77.99

Far superior to any other main bolt kit offered for use in competition engines, ARP main bolts are designed to meet the exacting standards and demands of professional engine builders. Forged from 8740 chrome moly, all bolts feature generous under-head radius and rolled threads for the utmost reliability. The threads are rolled after heat-treating, which makes them about 2000 Percent longer fatigue life than most main bolts, which are threaded prior to heat-treating.

Product Features:

Forged From Premium Grade 8740 Chrome Moly Steel
Generous Under Head Radius And Rolled Threads For The Utmost Reliability
Reduced Wrenching Head
Designed To Meet The Exacting Standards And Demands Of Professional Engine Builders
2-Bolt Main
Front or Rear Sump
Includes Oil Pickup Standoff Bolt
180,000 PSI

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$54.99

Manufactured to fit a specific application
Provides the lubrication oil as well as protection for your oil pump from materials that find their way into the engine oil supply system
It is recommended that a new properly installed oil pump pick-up tube/screen be a part of every oil pump installation
Oil pump screen assemblies are manufactured under strict quality guidelines
Utilizes ISO & QS certified manufacturing

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$47.99

Product Features:

DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
STRONG AND DURABLE – Features molded rubber over a rigid carrier which resists high heat
SUPERIOR SEAL – Proprietary rubber sealing beads help eliminate potential leak paths for a superior seal
EASIER TO INSTALL – Locating tabs assure proper alignment and easier installation
PREVENTS OVERTIGHTENING – Torque limiters help eliminate overtightening and gasket splitting and extruding
EVERY PART FOR THE REPAIR – Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
EVERY PART FOR THE REPAIR – Fel-Pro gasket sets include every part needed for the repair unless otherwise noted

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$8.49

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$78.99

The Edelbrock #4460 Signature Series Valve Covers are designed for Ford 260-289-302 (not Boss) and 351W V8 applications. Engineered for function and styled for great looks, Signature Series valve covers have stock-style breather baffles that prevent oil passage to the PCV valve. These quality valve covers accept all emissions equipment, including PCV valve holes. Rubber grommets for the breather and PCV valve holes are included. Matching breathers sold separately.

Product Features:

Small Block Ford 221-351W 62-95
Tall
Chrome Steel
Set Of Two
Rubber Grommets For Breather

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$28.99

This engine oil dipstick is designed to match the fit and function of an original equipment dipstick in specified applications. Level marks are clearly distinguished and properly gauged for accuracy.

Product Features:

Ideal replacement – this engine oil dipstick is designed to match the fit and function of an original equipment dipstick in specified applications
Ideal solution – level marks are clearly distinguished and properly gauged for accuracy
Durable construction – designed and manufactured to strict specifications for reliable performance
Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience

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$55.99

Helps improve cylinder sealing for less blow-by
Retains standard ring gaps in top groove
DUROSHIELD« skirt-coated piston
Moly-graphite coating extends engine life
Reduces friction for higher fuel economy
Prevents damage from inadequate lubrication on start-up

from

$65.99

For use on the most popular passenger car, light commercial and four-wheel drive applications, Dayco harmonic balancers use special rubber compounds to dampen and remove engine harmonics and add to engine performance. Manufactured using a premium ductile iron casting and injection bonded dampening rubber, Dayco harmonic balancers offer engine builders and technicians the highest quality replacement to standard OEM balancers, which are typically made with press inserted dampening rubber. Dayco balancers utilize both inserted and pressure-bonded rubber to provide superior bonding strength between the inner and outer balancer rings, helping minimize spin and dislocation.

Product Features:

Designed as premium OEM replacement balancers for serpentine and V-belt drives
Manufactured with ductile iron casting and injection bonded dampening rubber
Engineered to offer superior bonding strength between the balancer rings

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$39.99

REGULATOR AND MTR

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$19.99

Extensively tested and measured for function, fitment, and durability to ensure optimal performance. CAD designed and manufactured using premium materials. Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing. Refer to our online catalog for detailed application-specific information.

Product Features:

A timing chain guide serves as a track or guide, for the timing chain, connecting the crankshaft and camshaft. Designed to meet or exceed OEM performance requirements
CAD designed and manufactured using premium materials
Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing
Refer to our online catalog for detailed application-specific information

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$71.99

Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance. Engineered and manufactured with precision pitch control for proper chain-to-sprocket tooth fitment. CAD designed and manufactured using premium materials. Refer to our online catalog for detailed application-specific information.

Product Features:

A timing chain synchronizes the rotation of the crankshaft and camshaft(s) ensuring proper timing and allows the engine’s valves to open and close during each cylinder’s firing. Available in kits or as a stand-alone product
Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Engineered and manufactured with precision pitch control for proper chain-to-sprocket tooth fitment
CAD designed and manufactured using premium materials
Refer to our online catalog for detailed application-specific information
Pre-Stressed And Heat-Treated For Increased Durability. Precision Cut Plates And Rollers With Smooth Finish. Precision Pitch Control For Proper Chain To Sprocket Tooth Fit.

Upgrade your 2003 Mercury Mountaineer with Top-Quality Engine Parts

When it comes to maintaining or upgrading your 2003 Mercury Mountaineer, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Mercury or enhancing its overall performance, Engine Parts are key to keeping your Mountaineer functioning at its best. At Advance Auto Parts, we offer a wide selection of 206 Engine Parts for the 2003 Mercury Mountaineer, designed to meet your needs without breaking the bank. From Engine Gaskets and Seal replacements to Engine Mounts upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.

Affordable Prices and Wide Selection

Shopping for Engine Parts for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Engine Parts for your 2003 Mercury Mountaineer at great prices. Our Engine Parts inventory for this model ranges from just $1.29 to $3,839.99, with an average price of $218.97. Our 206 Engine Parts in stock come from 25 trusted brands, so you’re sure to find the right part for your 2003 Mercury Mountaineer without overspending.

Top Brands and High Customer Satisfaction

Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 2003 Mercury Mountaineer, we stock popular OEM and aftermarket Engine Parts from top names like FELPRO, National, Sealed Power, and more. FELPRO Engine Parts start at just $32.99 and boast an impressive 4.6 stars average rating from customers. National and Sealed Power also bring quality to the table, with Engine Parts available starting at $8.49, and at an average 4.3 stars rating. With 387 customer reviews and counting, our 2003 Mercury Mountaineer Engine Parts have a strong track record of reliability, ensuring you can trust your purchase.

Explore Related Parts and More

While you’re here, don’t forget to check out other essential categories that go hand in hand with Engine Part upgrades. Explore related part types like Batteries and Chargers, Oil and Lubricants and more to make sure your 2003 Mercury Mountaineer is always ready to roll. We’re committed to providing you with everything you need to keep your Mountaineer in top shape, all in one place. Start shopping confidently below for your 2003 Mercury Mountaineer!

Best-Selling Engine Gaskets and Seals for 2003 Mercury Mountaineers

Enhance the driving experience in your Mercury with 19 quality Engine Gaskets and Seal components, starting at $12.49.

show more show less

from

$35.99

Product Features:

DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
ENGINEERED TO PERFORM – Proprietary cork-rubber formulation
SUPERIOR SEAL – Highly conformable to accommodate for the imperfect sealing surfaces
EVERY PART FOR THE REPAIR – Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
REAL WORLD TESTED – Parts are tested on-vehicle and validated to ensure optimal performance on the road

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$37.99

DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
SUPERIOR SEAL – Manufactured with rubber compounds to ensure a consistent and long-life seal across the entire oil pan
PREVENTS OVERTIGHTENING – Torque limiters help eliminate overtightening and gasket splitting and extruding (where applicable)
OE-STYLE REPLACEMENT GASKET – Engineered for OE-style molded rubber gasket replacement
EVERY PART FOR THE REPAIR – Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
ENGINEERING EXPERTISE – Parts are designed, tested, validated and approved by Fel-Pro engineers through rigorous research and development
ENGINEERING EXPERTISE – Parts are designed, tested, validated and approved by Fel-Pro engineers through rigorous research and development

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$32.99

DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
ENGINEERED TO PERFORM – Proprietary cork-rubber formulation
SUPERIOR SEAL – Highly conformable to accommodate for the imperfect sealing surfaces
EVERY PART FOR THE REPAIR – Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
REAL WORLD TESTED – Parts are tested on-vehicle and validated to ensure optimal performance on the road

from

$37.99

Application specific design to ensure a perfect fit
Meets or exceeds all original equipment specifications
Engineered and manufactured specifically for repair applications
Unsurpassed quality you can trust
Validated for fit, form, and function

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$26.99

RIGHT TYPE – Valve stem seals designs are application-specific for the repair occasion using either deflector (umbrella) seals, O-ring style or positive seals
QUALITY MATERIALS – Each valve stem seal features materials based on the specific application for your vehicle repair
ENGINEERING EXPERTISE – Parts are reviewed, validated and approved by Fel-Pro engineers through rigorous research, development and testing
INSTALLATION AID – Installation tool included to protect inner lip of seal from damage during seal installation
COVERAGE – Available for domestic and foreign nameplate vehicles

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$28.49

National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:

Design type: spring loaded; multi-lip
Temperature range: -40 Deg. F to 400 Deg. F / -40 Deg. C to 204 Deg. C
Excellent high temperature capabilities
Compatible with wide range of fluids
Delivers quality and reliable performance for every type of repair

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$48.99

DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
ENGINEERED TO PERFORM – Proprietary cork-rubber formulation
SUPERIOR SEAL – Highly conformable to accommodate for the imperfect sealing surfaces
EVERY PART FOR THE REPAIR – Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
REAL WORLD TESTED – Parts are tested on-vehicle and validated to ensure optimal performance on the road

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$52.99

DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
SUPERIOR SEAL – Manufactured with rubber compounds to ensure a consistent and long-life seal across the entire oil pan
PREVENTS OVERTIGHTENING – Torque limiters help eliminate overtightening and gasket splitting and extruding (where applicable)
OE-STYLE REPLACEMENT GASKET – Engineered for OE-style molded rubber gasket replacement
EVERY PART FOR THE REPAIR – Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
ENGINEERING EXPERTISE – Parts are designed, tested, validated and approved by Fel-Pro engineers through rigorous research and development

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$32.99

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.

Product Features:

Timing cover set includes gaskets and seals necessary for timing chain/belt replacement job
Application specific design to ensure a perfect fit
Engineered and manufactured specifically for the repair environment
Unsurpassed quality you can trust
Validated for fit, form, and function

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$35.99

Application specific design to ensure a perfect fit
Meets or exceeds all original equipment specifications
Engineered and manufactured specifically for repair applications
Unsurpassed quality you can trust
Validated for fit, form, and function

from

$37.99

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.

Product Features:

Application specific design to ensure a perfect fit
Meets or exceeds all original equipment specifications
Engineered and manufactured specifically for repair applications
Unsurpassed quality you can trust
Validated for fit, form, and function

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$49.99

RIGHT TYPE – Valve stem seals designs are application-specific for the repair occasion using either deflector (umbrella) seals, O-ring style or positive seals
QUALITY MATERIALS – Each valve stem seal features materials based on the specific application for your vehicle repair
ENGINEERING EXPERTISE – Parts are reviewed, validated and approved by Fel-Pro engineers through rigorous research, development and testing
INSTALLATION AID – Installation tool included to protect inner lip of seal from damage during seal installation
COVERAGE – Available for domestic and foreign nameplate vehicles

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$12.49

PROBLEM-SOLVING SOLUTION — Innovative solution to install and re-seal the original tensioner which utilizes a sealing bead molded to tensioner housing
EASIER TO INSTALL — Features every part for the repair including two gaskets and two tensioner clips for aid in installation
PREMIUM MATERIALS — Proprietary rubber formulation resist high engine temperatures and is compatible with today’s engine oils
REAL-WORLD TESTED — Parts are tested on-vehicle and validated to ensure optimal performance on the road

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$16.79

The only parts recommended by Ford Motor Company for Ford, Lincoln and Mercury vehicles.

Product Features:

Available for most Ford Lincoln and Mercury vehicle applications.
Specifically designed for each application for optimum performance and easy installation.
Designed to meet precise Ford O.E. engineering standards for fit, functionality and durability.
High-strength materials used for long, trouble-free service life.
Ford O-Rings provide effective sealing against water, oil, gases, chemicals and harmful contaminants.
Engineered to maintain reliable sealing under harsh conditions, including temperature and pressure extremes.

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$401.99

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.

Product Features:

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Engineered and manufactured specifically for the repair environment
Unsurpassed quality you can trust
Includes all parts needed to complete the repair

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$322.99

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Engineered and manufactured specifically for the repair environment
Unsurpassed quality you can trust
Includes all parts needed to complete the repair

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$289.99

Sealed Power parts provide innovative designs, use leading-edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.

Product Features:

Each 260 gasket set includes Fel-Pro gaskets (Number 1 brand of gaskets)
Provides the exact gaskets the application requires.
State-of-the-art manufacturing
Exacting tolerances
Meets or exceeds OEM specifications

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$101.99

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.

Product Features:

Conversion Sets (CS) provide every gasket for lower engine work – add a Head Set (HS) for complete engine overhaul work
Application specific design to ensure a perfect fit
Meets or exceeds all original equipment specifications
Validated for fit, form and function
Unsurpassed quality you can trust
Includes all the parts necessary to complete the repair unless otherwise noted
Includes all the parts necessary to complete the repair unless otherwise noted

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$48.99

Designed to repair damaged, grooved or worn shafts
Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
Easy to install with removable flange and installation tool

Most Popular 2003 Mercury Mountaineer Engine Mounts

Customize your Mercury with 2 Engine Mounts products like Engine Mounts, all priced under $53.99.

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$38.99

The purpose of the mount is to support the engine and transmission on the chassis and dampen vibration and noise from reverberating to the rest of the vehicle. Engine and Transmission Mounts are engineered and manufactured to meet or exceed OEM specifications using the latest CAD/CAM engineering process to ensure superior quality, form, fit and function. Only premium quality materials are used in the manufacturing process to guarantee precise performance and maximum durability. Applicable to Applicable to FORD 02-05; LINCOLN 03-05; MERCURY 02-05;. Please verify your application.

Product Features:

MAXIMUM LIFE & PERFORMANCE: Both natural and SBR (Styrene Butadiene) rubber provide good abrasion resistance and aging stability to ensure maximum life and performance.
MEETS OR EXCEEDS DUROMETER MEASUREMENTS: All rubber material is manufactured to specific Durometer (hardness) measurements based on the vehicle’s application requirements.
HARDENED STEEL FASTENERS: All fasteners are made of hardened steel with heat treated Grade #5 bolts.
SUPERIOR BOND: A special Chemlock® bonding agent is used to ensure a superior rubber-to-metal bond.
HYDRAULIC MOUNT DESIGN: Hydraulic Mounts (applicable where OE) are designed for most front wheel drive vehicles because transverse drive train mounting.
For Years: 2002-2005
Weight approx: 4 Lbs

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$53.99

The purpose of the mount is to support the engine and transmission on the chassis and dampen vibration and noise from reverberating to the rest of the vehicle. Engine and Transmission Mounts are engineered and manufactured to meet or exceed OEM specifications using the latest CAD/CAM engineering process to ensure superior quality, form, fit and function. Only premium quality materials are used in the manufacturing process to guarantee precise performance and maximum durability. Applicable to Applicable to FORD 02-10; LINCOLN 03-05; MERCURY 02-10;. Please verify your application.

Product Features:

MAXIMUM LIFE & PERFORMANCE: Both natural and SBR (Styrene Butadiene) rubber provide good abrasion resistance and aging stability to ensure maximum life and performance.
MEETS OR EXCEEDS DUROMETER MEASUREMENTS: All rubber material is manufactured to specific Durometer (hardness) measurements based on the vehicle’s application requirements.
HARDENED STEEL FASTENERS: All fasteners are made of hardened steel with heat treated Grade #5 bolts.
SUPERIOR BOND: A special Chemlock® bonding agent is used to ensure a superior rubber-to-metal bond.
HYDRAULIC MOUNT DESIGN: Hydraulic Mounts (applicable where OE) are designed for most front wheel drive vehicles because transverse drive train mounting.
For Years: 2002-2010
Weight approx: 4 Lbs

Top Picks for 2003 Mercury Mountaineer Engine Timing Parts

Upgrade Mercury Mountaineers with top-quality Engine Timing Parts parts, including 50 OEM and aftermarket selections for your 2003 model.

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from

$12.49

Made of stainless steel
Designed to prevent timing cover seal leaks
Takes up gaps caused by worn-out harmonic balancer shafts

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$43.99

Advance Auto Parts is proud to carry this part with the best fitment and performance requirements for this application, from the highest quality timing component vendor.

Product Features:

The part is precision machined with high grade material for greater durability
Maintains excellent chain or belt tension
Meets or exceeds O.E.M. performance
Part is quality inspected and tested

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$76.99

Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing. CAD designed and manufactured using premium materials. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance. Meet or exceed OEM performance requirements. Utilizes the latest in design and material technology, ensuring a quiet and maintenance-free experience.

Product Features:

A timing chain tensioner maintains appropriate tension in the timing chain. Depending on design, tensioners can use spring tension or hydraulic pressure to properly tension the chain
CAD designed and manufactured using premium materials
Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Meet or exceed OEM performance requirements
Utilizes the latest in design and material technology, ensuring a quiet and maintenance-free experience

from

$58.99

Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing. CAD designed and manufactured using premium materials. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance. Meet or exceed OEM performance requirements. Utilizes the latest in design and material technology, ensuring a quiet and maintenance-free experience.

Product Features:

A timing chain tensioner maintains appropriate tension in the timing chain. Depending on design, tensioners can use spring tension or hydraulic pressure to properly tension the chain
CAD designed and manufactured using premium materials
Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Meet or exceed OEM performance requirements
Utilizes the latest in design and material technology, ensuring a quiet and maintenance-free experience

from

$54.99

Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing. CAD designed and manufactured using premium materials. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance. Meet or exceed OEM performance requirements. Utilizes the latest in design and material technology, ensuring a quiet and maintenance-free experience.

Product Features:

A timing chain tensioner maintains appropriate tension in the timing chain. Depending on design, tensioners can use spring tension or hydraulic pressure to properly tension the chain
CAD designed and manufactured using premium materials
Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Meet or exceed OEM performance requirements
Utilizes the latest in design and material technology, ensuring a quiet and maintenance-free experience

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$323.99

Meet or exceed OEM performance requirements, ensuring a quiet and maintenance-free experience. Utilizes the latest in design and technology to offer a complete chain kit solution. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance. CAD designed and manufactured using premium materials. Refer to our online catalog for detailed application-specific information. SET INCLUDES: S764T Engine Timing Camshaft Sprocket (1 EA), S766T Engine Timing Camshaft Sprocket (1 EA), C387 Engine Timing Chain (2 EA), S869 Engine Timing Crankshaft Sprocket (1 EA), 9-5432 Engine Timing Chain Tensioner (1 EA), 9-5433 Engine Timing Chain Tensioner (1 EA), 9-5429 Engine Timing Chain Guide (1 EA), 9-5428 Engine Timing Chain Guide (1 EA), 9-5340 Engine Timing Chain Tensioner Guide (1 EA), 9-5341 Engine Timing Chain Tensioner Guide (1 EA).

Product Features:

Timing Chain Kits includes all components for a quick and efficient replacement
Utilizes the latest in design and technology to offer a complete chain kit solution
Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
CAD designed and manufactured using premium materials
Refer to our online catalog for detailed application-specific information

from

$54.99

Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing. CAD designed and manufactured using premium materials. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance. Meet or exceed OEM performance requirements. Utilizes the latest in design and material technology, ensuring a quiet and maintenance-free experience.

Product Features:

A timing chain tensioner maintains appropriate tension in the timing chain. Depending on design, tensioners can use spring tension or hydraulic pressure to properly tension the chain
CAD designed and manufactured using premium materials
Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Meet or exceed OEM performance requirements
Utilizes the latest in design and material technology, ensuring a quiet and maintenance-free experience

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$275.99

Meet or exceed OEM performance requirements, ensuring a quiet and maintenance-free experience. Utilizes the latest in design and technology to offer a complete chain kit solution. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance. CAD designed and manufactured using premium materials. Refer to our online catalog for detailed application-specific information. SET INCLUDES: C387 Engine Timing Chain (2 EA), 9-5340 Engine Timing Chain Tensioner Guide (1 EA), 9-5341 Engine Timing Chain Tensioner Guide (1 EA), 9-5428 Engine Timing Chain Guide (1 EA), 9-5429 Engine Timing Chain Guide (1 EA), 9-5432 Engine Timing Chain Tensioner (1 EA), 9-5433 Engine Timing Chain Tensioner (1 EA).

Product Features:

Timing Chain Kits includes all components for a quick and efficient replacement
Utilizes the latest in design and technology to offer a complete chain kit solution
Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
CAD designed and manufactured using premium materials
Refer to our online catalog for detailed application-specific information

from

$38.99

Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing. CAD designed and manufactured using premium materials. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance. Designed to meet or exceed OEM performance requirements. Refer to our online catalog for detailed application-specific information.

Product Features:

A timing chain guide serves as a track or guide, for the timing chain, connecting the crankshaft and camshaft. Designed to meet or exceed OEM performance requirements
CAD designed and manufactured using premium materials
Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Designed to meet or exceed OEM performance requirements
Refer to our online catalog for detailed application-specific information

from

$32.99

Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing. CAD designed and manufactured using premium materials. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance. Designed to meet or exceed OEM performance requirements. Refer to our online catalog for detailed application-specific information.

Product Features:

A timing chain guide serves as a track or guide, for the timing chain, connecting the crankshaft and camshaft. Designed to meet or exceed OEM performance requirements
CAD designed and manufactured using premium materials
Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Designed to meet or exceed OEM performance requirements
Refer to our online catalog for detailed application-specific information

from

$114.99

Timing Chain Kits includes all components for a quick and efficient replacement
Utilizes the latest in design and technology to offer a complete chain kit solution
Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
CAD designed and manufactured using premium materials
Refer to our online catalog for detailed application-specific information

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$105.99

This engine timing chain tensioner is designed to match the fit and function of the original tensioner on specified applications. Made of quality materials, it is engineered for reliable performance and durability.

Product Features:

Direct replacement – this engine timing chain tensioner is designed to match the fit and function of the original tensioner on specified applications
Recommended for replacement when a new timing chain and pulleys are installed
Durable construction – this part is made from quality materials to ensure reliable performance and long service life
Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

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$593.99

Timing Chain Kits includes all components for a quick and efficient replacement
Utilizes the latest in design and technology to offer a complete chain kit solution
Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
CAD designed and manufactured using premium materials
Refer to our online catalog for detailed application-specific information

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$30.99

A timing chain guide serves as a track or guide, for the timing chain, connecting the crankshaft and camshaft. Designed to meet or exceed OEM performance requirements
CAD designed and manufactured using premium materials
Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing
Refer to our online catalog for detailed application-specific information

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$159.99

Timing Chain Kits includes all components for a quick and efficient replacement
Utilizes the latest in design and technology to offer a complete chain kit solution
Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
CAD designed and manufactured using premium materials
Refer to our online catalog for detailed application-specific information

from

$131.99

Timing Chain Kits includes all components for a quick and efficient replacement
Utilizes the latest in design and technology to offer a complete chain kit solution
Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
CAD designed and manufactured using premium materials
Refer to our online catalog for detailed application-specific information
Timing Chain kit Contains: Cassette Assembly, Engine Compartment Seal

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$135.99

This direct replacement timing cover matches the fit and function of the original equipment cover for a reliable repair. This part has undergone extensive testing to ensure adherence to precise design standards.

Product Features:

Direct replacement – this engine timing cover matches the fit and function of the original equipment cover
Durable construction – this part is specifically designed to withstand extreme underhood temperatures for a long service life
Cost-effective solution – offers original equipment quality at a competitive price
Quality tested – this part has undergone extensive testing to ensure a quality fit and long service life

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$71.99

A timing chain synchronizes the rotation of the crankshaft and camshaft(s) ensuring proper timing and allows the engine’s valves to open and close during each cylinder’s firing. Available in kits or as a stand-alone product
Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Engineered and manufactured with precision pitch control for proper chain-to-sprocket tooth fitment
CAD designed and manufactured using premium materials
Refer to our online catalog for detailed application-specific information
Pre-Stressed And Heat-Treated For Increased Durability. Precision Cut Plates And Rollers With Smooth Finish. Precision Pitch Control For Proper Chain To Sprocket Tooth Fit.

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$44.99

Featuring precision-tooled or machined tooth form and precision-machined bore for true fit, timing chain sprockets offer reliability and dependability for engine rebuilds and typical replacement jobs. Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing. CAD designed and manufactured using premium materials. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance. Refer to our online catalog for detailed application-specific information.

Product Features:

Along with the timing chain, tensioners, and guides, sprockets are an integral component within the timing system. Timing gears and sprockets are available as part of complete timing kits as well as for individual purchase and installation
Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing
CAD designed and manufactured using premium materials
Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Refer to our online catalog for detailed application-specific information

from

$498.99

Timing Chain Kits includes all components for a quick and efficient replacement
Utilizes the latest in design and technology to offer a complete chain kit solution
Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
CAD designed and manufactured using premium materials
Refer to our online catalog for detailed application-specific information

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$46.99

Featuring precision-tooled or machined tooth form and precision-machined bore for true fit, timing chain sprockets offer reliability and dependability for engine rebuilds and typical replacement jobs
Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing
CAD designed and manufactured using premium materials
Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Refer to our online catalog for detailed application-specific information

from

$39.99

Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing. CAD designed and manufactured using premium materials. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance. Meet or exceed OEM performance requirements. Utilizes the latest in design and material technology, ensuring a quiet and maintenance-free experience.

Product Features:

A timing chain tensioner maintains appropriate tension in the timing chain. Depending on design, tensioners can use spring tension or hydraulic pressure to properly tension the chain
CAD designed and manufactured using premium materials
Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Meet or exceed OEM performance requirements
Utilizes the latest in design and material technology, ensuring a quiet and maintenance-free experience

from

$52.99

Bi-metal aluminum alloy
For shafts in crankcase
Front drive bushing not included
Utilizes ISO & QS certified manufacturing
Meets or exceeds OEM specifications

from

$36.99

Featuring precision-tooled or machined tooth form and precision-machined bore for true fit, timing chain sprockets offer reliability and dependability for engine rebuilds and typical replacement jobs
Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing
CAD designed and manufactured using premium materials
Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Refer to our online catalog for detailed application-specific information

In-Demand Camshafts for 2003 Mercury Mountaineers

Select from 15 premium Camshafts parts for your 2003 Mercury Mountaineer, with prices ranging from $12.79 to $52.99.

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$12.79

BWD is an aftermarket leader, providing a premium line of engine management products. BWD manufactures and distributes high technology critical components for late model domestic and import vehicles. BWD is constantly evolving to give customers the competitive edge they need to compete in today’s ever-changing marketplace.

Product Features:

100% pure copper windings in primary and secondary bobbins improve durability and provide higher resistance to internal shorts and dielectric breakdown
Electronic ignition module profile and feedback signal ensures proper OE fit, form, and function
Thermoplastic housing withstands heat stress for enhanced durability
Internal core made from grain oriented electrical steel limits loss factor within magnetic circuit to reduce heat and ensure coil endurance
Neodymium magnet produces max high voltage output at all speeds

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$31.99

A leader in vehicle electronic solutions, each premium product meets or exceeds OE specifications in appearance, fit, and function, ensuring easy installation and excellent performance. The product has been tested under extreme environments.

Product Features:

Reliable circuit board and product structure design, 3D proofing, and field test verification to ensure correct signal output at all speeds.
Manufactured in an anti-static environment to ensure reliability and stability.
Extreme temperature and salt spray tests simulate real-world vehicle conditions to ensure durability and reliability.
Providing this premium product line, we meet the service professionals needs with the highest quality product every time the part comes out of the box.

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$25.99

High-quality products that meet OE appearance and performance to provide professional technicians and DIYers with a cost-effective solution.

Product Features:

Designed to OE standards for ease of installation
100% testing to meet OE performance
High temperature resistance for longer life

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$32.99

The Camshaft Position Sensor plays a vital role in your engine’s operation, to determine the exact position and speed of the camshaft(s) to the ECM. The ECM uses this information to determine fuel and spark timing as well as VVT operation. A failed sensor can result in a check engine light, hard starting or failure to start, increased vehicle emissions and engine misfire. Camshaft Position Sensors are a premium quality product with outstanding support and leading innovation bred from our OE heritage.

Product Features:

THE DIFFERENCE: Enhanced, robust circuit board traces and precision-wound coated-copper windings increase durability, longevity and performance
OE QUALITY: Designed to meet or exceed OE specifications, fit, form and function to ensure proper position and/or rotating speed of the camshaft
EXTENSIVE TESTING: 100 percent thermal shock and vibration tested for best in class performance and reliability in the most extreme conditions
PRODUCT ENGINEERING: Premium seals prevent leaks or corrosion, while optimized magnet size and strength ensures precise, consistent signal output
INSTALLATION AND SUPPORT: Includes OE style brackets, hold downs, hardware, spacers and weathertight connectors

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$52.99

Reliable circuit board and product structure design, 3D proofing, and field test verification to ensure correct signal output at all speeds.
Manufactured in an anti-static environment to ensure reliability and stability.
Extreme temperature and salt spray tests simulate real-world vehicle conditions to ensure durability and reliability.
Providing this premium product line, we meet the service professionals needs with the highest quality product every time the part comes out of the box.

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$34.99

Designed to repair damaged, grooved or worn shafts
Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
Easy to install with removable flange and installation tool

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$34.99

Install an ARP cam bolt kit and end your camshaft timing worries ARP quality delivers increased pre-load clamping force and assures positive timing gear register. Includes appropriate fasteners for your application. Increased material strength overcomes valve train harmonics and stress. Added features include oversized bolt head flange for cam button retention and reduced socket head size to facilitate easy installation and removal. Available in both High Performance and Pro Series kits.

Product Features:

Arp Quality Delivers Increased Pre-Load Clamping Force And Assures Positive Timing Gear Register
Quality Delivers Increased Pre-Load Clamping Force And Assures Positive Timing Gear Register
Increased Material Strength Overcomes Valve Train Harmonics And Stress
Oversized Bolt Head Flange For Cam Button Retention And Reduced Socket Head Size To Facilitate Easy Installation And Removal
M12 X 1.50 RH Thread Size
1.7″ Underhead Length

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$43.99

This engine camshaft position sensor is designed to match the fit and function of an original sensor to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage.

Product Features:

Direct replacement – this engine camshaft position sensor is designed to match the fit and function of an original sensor on specified vehicles
Ideal solution – engineered to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage
Durable construction – designed and manufactured to strict specifications for reliable performance
Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience

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$31.99

Delphi’s ever growing portfolio of high quality vehicle sensors are backed by stringent OE development and product validation methods. We offer a wide range of sensors, including ABS, camshaft, crankshaft, knock, EGT, MAP, temperature, throttle position, and vehicle speed sensors for a variety of vehicle applications. All of our sensors are tested and calibrated to OE standards, ensuring accurate readings, which helps to reduce comebacks.

Product Features:

Delphi products are manufactured in a Delphi ISO certified facility
Designed digital output for maximum signal to noise ratio
All parts used in the manufacture process are Delphi validated
Not impacted by temperature changes and provide robust, long-lasting sensor protection

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$52.99

DENSO’s camshaft position sensors are manufactured to the strictest OE standards resulting in unsurpassed reliability durability and detection accuracy. DENSO’s camshaft position sensors offer leading edge sensing technology which helps control ignition timing more precisely.

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$43.49

Product Features:

Brand may vary by location

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$37.99

Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
WVE electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
Product constructed to meet all design and operating characteristics as intended by the manufacturer.
OE specified wire gauge to ensure a reliable electrical connection
Designed to meet or exceed OE specifications in form, fit and function

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$36.99

OE technology adapted for the aftermarket
Reduces emissions, increased performance
Delivers the highest reliability and detection accuracy

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$29.99

Direct replacement – this engine camshaft position sensor is designed to match the fit and function of an original sensor on specified vehicles
Ideal solution – engineered to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage
Durable construction – designed and manufactured to strict specifications for reliable performance
Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience

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$15.99

Our wheel seals are engineered using only the highest-quality materials to meet vehicle manufacturer specificatons. We work with suppliers to design seals that meet FAG’s quality standards. Seals are designed to protect wheel end components from contamination – such as dirt, dust, and moisture – and prevent the loss of grease over the life of the bearing. The specifications for wheel seals are very demanding, and the type required depends on the specific application, position and vehicle class.

Product Features:

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

Most Sold 2003 Mercury Mountaineer Valve Cover and Cylinder Heads

Explore our best-selling Mercury parts for the 2003 Mountaineer among 22 OEM and aftermarket options starting from $1.79.

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from

$59.99

Product Features:

PROPRIETARY COATING – Exclusive coating helps withstand rougher sealing surface finishes up to 80 Ra
SUPERIOR SEAL – Precise embossed sealing beads at all vital areas to eliminate leak paths
MULTI-LAYERED STEEL CONSTRUCTION – Multiple layers of stainless steel maintain sealing stress and accommodate head lift
UNIQUE COMBUSTION SEAL – Accommodates high cylinder pressures and head movement encountered with engines
DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces

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$59.99

Product Features:

PROPRIETARY COATING – Exclusive coating helps withstand rougher sealing surface finishes up to 80 Ra
SUPERIOR SEAL – Precise embossed sealing beads at all vital areas to eliminate leak paths
MULTI-LAYERED STEEL CONSTRUCTION – Multiple layers of stainless steel maintain sealing stress and accommodate head lift
UNIQUE COMBUSTION SEAL – Accommodates high cylinder pressures and head movement encountered with engines
DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces

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$42.99

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.

Product Features:

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Avoid risk associated with re-use of T-T-Y (torque to yield) head bolts
Validated for fit, form and function
Unsurpassed quality you can trust

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$57.99

Product Features:

PROPRIETARY COATING – Exclusive coating helps withstand rougher sealing surface finishes up to 80 Ra
UNIQUE COMBUSTION SEAL – Exclusive Laser Weld stopper layer technology reduces gasket damage from blow out and helps ensure a stronger combustion seal
MULTI-LAYERED STEEL CONSTRUCTION – Multiple layers of stainless steel maintain sealing stress and accommodate head lift
SUPERIOR SEAL – Precise embossed sealing beads at all vital areas to eliminate leak paths
HANDLES EXTREME ENGINE CONDITIONS – Engineered and manufactured to inhibit over-compression of embossments to maintain a superior seal under peak combustion pressures and temperatures
DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces

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$57.99

Product Features:

PROPRIETARY COATING – Exclusive coating helps withstand rougher sealing surface finishes up to 80 Ra
UNIQUE COMBUSTION SEAL – Exclusive Laser Weld stopper layer technology reduces gasket damage from blow out and helps ensure a stronger combustion seal
MULTI-LAYERED STEEL CONSTRUCTION – Multiple layers of stainless steel maintain sealing stress and accommodate head lift
SUPERIOR SEAL – Precise embossed sealing beads at all vital areas to eliminate leak paths
HANDLES EXTREME ENGINE CONDITIONS – Engineered and manufactured to inhibit over-compression of embossments to maintain a superior seal under peak combustion pressures and temperatures
DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces

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$11.99

Unsurpassed quality that you can trust
Uses leading edge materials
State-of-the-art manufacturing
Exacting tolerances
Meets or exceeds OEM specifications

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$57.99

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Avoid risk associated with re-use of T-T-Y (torque to yield) head bolts
Validated for fit, form and function
Unsurpassed quality you can trust

from

$20.99

from

$34.99

The Engine Cylinder Head Temperature Sensor determines the exact temperature of the cylinder head by sending an analog signal to the ECM to calculate timing and fuel delivery for maximum engine performance, efficiency and engine operating temperature. The Engine Cylinder Head Temperature Sensor is located on the cylinder head. Reasons for replacement include, check engine light illumination, erratic or no temperature gauge operation, erratic or no cooling fan operation, and engine overheating.

Product Features:

OE MATCHED: Probe length matched to OE. Thread sealer pre-applied if necessary
FASTER RESPONSE TIME: Thermal conductive grease inside brass housing increases sensor response time
THE DIFFERENCE: Thread sealant/o-ring installed where applicable. Thermistor placement within the housing matches OE to ensure proper output. Proper thermal conductive grease to provide accurate temperature transfer to the thermistor

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$33.99

The Engine Cylinder Head Temperature Sensor provides an input to the engine control module concerning the engine operating temperature. Similar to the engine coolant temperature sensor input, the engine control module will make engine operating condition changes based on engine temperature.

Product Features:

Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
100% end-of-line tested to ensure accurate signal output providing product reliability, every time.
Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
Lead frame terminal size and location determined using image dimension measuring system or 3D laser scanner.
Application matched components ensures system operation in like new condition.

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$162.99

This replacement valve cover matches the fit and function of the original equipment part that may be damaged or warped. Made from quality materials for excellent fit and superior heat resistance, this valve cover has undergone extensive testing.

Product Features:

Direct replacement – this valve cover matches the original equipment part for fit and function
Durable construction – this valve cover is made of quality materials to withstand extreme temperatures to resist leaking
Cost-effective solution – offers original equipment performance at competitive price
Quality tested – this part has undergone try-on and material testing to ensure a quality fit and reliable service

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$212.99

PROPRIETARY COATING – Nonstick anti-friction coating seals small surface scratches and imperfections
SEALING TECHNOLOGIES – Exclusive sealing innovations and technologies with proprietary materials and unique design features to ensure a superior seal for your repair
NO RETORQUE DESIGN – Steel core helps eliminate the need for retorquing head bolts
STRONG AND DURABLE – Features graphite or reinforced fiber facing material and steel armor for strength and durability
DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces

from

$16.99

from

$3.99

from

$196.99

PROPRIETARY COATING – Nonstick anti-friction coating seals small surface scratches and imperfections
SEALING TECHNOLOGIES – Exclusive sealing innovations and technologies with proprietary materials and unique design features to ensure a superior seal for your repair
NO RETORQUE DESIGN – Steel core helps eliminate the need for retorquing head bolts
STRONG AND DURABLE – Features graphite or reinforced fiber facing material and steel armor for strength and durability
DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces

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$1.79

This engine expansion plug is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:

Direct replacement – this engine expansion plug matches the fit and function of the factory part on specified years, makes and models
Ideal solution – this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
Durable construction – this part is made from quality materials to ensure reliable performance and long service life
Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

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$756.99

Remanufactured Cylinder Heads are complete rebuild & include new valve stem seals, soft plugs & verified camshafts. All threads are checked and repaired if necessary. Cylinder Heads are packaged in heavy plastic to protect the unit.

Product Features:

All cylinder heads are both vacuum and pressure tested to verify valve seating, & integrity of water passages.
All cylinder heads are packaged in environmentally safe and recyclable containers that are the perfect size for returning your original core
All threads and machined surfaces are and repaired with technology that exceeds the original metal
Non-sealing iron surfaces painted to prevent oxidization

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$618.99

All cylinder heads are both vacuum and pressure tested to verify valve seating, & integrity of water passages.
All cylinder heads are packaged in environmentally safe and recyclable containers that are the perfect size for returning your original core
All threads and machined surfaces are and repaired with technology that exceeds the original metal
Non-sealing iron surfaces painted to prevent oxidization

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$579.99

All cylinder heads are both vacuum and pressure tested to verify valve seating, & integrity of water passages.
All cylinder heads are packaged in environmentally safe and recyclable containers that are the perfect size for returning your original core
All threads and machined surfaces are and repaired with technology that exceeds the original metal
Non-sealing iron surfaces painted to prevent oxidization

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$539.99

All cylinder heads are both vacuum and pressure tested to verify valve seating, & integrity of water passages.
All cylinder heads are packaged in environmentally safe and recyclable containers that are the perfect size for returning your original core
All threads and machined surfaces are and repaired with technology that exceeds the original metal
Non-sealing iron surfaces painted to prevent oxidization

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$135.99

Direct replacement – this valve cover matches the original equipment part for fit and function
Durable construction – this valve cover is made of quality materials to withstand extreme temperatures to resist leaking
Cost-effective solution – offers original equipment performance at competitive price
Quality tested – this part has undergone try-on and material testing to ensure a quality fit and reliable service

from

$12.99

Melling Performance valvetrain checking springs feature a low-tension design that allows them to be installed by hand for measuring piston-to-valve clearance, rocker arm ratio, and degreeing in a camshaft.

Top-Rated Engine Parts Brands For Your 2003 Mercury Mountaineer

Shop for the best-rated brands offering Engine Parts and other products for your 2003 Mercury Mountaineers. Below you’ll find some of our best rated Engine Parts from FELPRO, National, and Sealed Power, and more. Engine Parts from these brands that fit a 2003 Mountaineer start at just $8.49 and are rated as high as 4.6 stars. OEM and aftermarket Engine Parts don’t get more top quality, durable, and affordable than from the brands below.

Popular FELPRO 2003 Mercury Mountaineer Engine Parts

When it comes to maintaining or upgrading your 2003 Mercury Mountaineer, using quality Engine Parts is essential to ensure durability and a perfect fit. FELPRO ticks all of those boxes. We offer a wide selection of FELPRO Engine Parts, specifically designed for the 2003 Mercury Mountaineer. With over 3 FELPRO brand Engine Parts in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $32.99, with an average price of just $35.66. Plus, with over 77 customer reviews and an average rating of 4.6 stars, you can trust that our FELPRO Engine Parts will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.

from $32.99

(18)

Engine Oil Pan Gasket Set – PermaDry molded rubber

“Easy to install.”

from $35.99

(37)

VALVE COVER GASKET SET

“Exact replacement for the original. Kit is complete for the job minus the intake seals.”

from $37.99

(22)

Engine Oil Pan Gasket Set – PermaDry molded rubber

“Fits in place would not replace”

Popular National 2003 Mercury Mountaineer Engine Parts

National auto parts is one of the highest quality Engine Part brands in the market. Any 2003 Mercury Mountaineer owner should feel confident when installing genuine National parts in their vehicle. To ensure the best fit and performance for your 2003 Mountaineer, Advance Auto Parts carries a full inventory of 3 National Engine Parts. Plus you will be keeping your Mercury in peak condition while saving money because prices on these National Engine Parts range from $12.29 to $29.99, plus, with more than 5 customer reviews and an impressive 4.3 stars average rating, you can be confident the Fram Engine Parts below will deliver on both quality and value.

from $12.29

(1)

Multi-Purpose Seal

“its a durable, heavy and so easy replacement this parts.”

from $29.99

(2)

Engine Crankshaft Seal

“IT HELPS WHEN GOOD PARTS ARE NEARBY.”

from $12.49

(2)

Engine Harmonic Balancer Repair Sleeve

“This was needed for an off-label application, and has done the job perfectly. Service was outstanding, as always!”

FAQs for 2003 Mercury Mountaineer Engine Parts

Which Engine Parts are best-sellers for 2003 Mercury Mountaineers?

Out of 206 Engine Parts that fit 2003 Mercury Mountaineers, the following parts are the top sellers:

Engine Valve Lifter (19690646) – $11.99
Camshaft Sensor (12339386) – $31.99
Air Charge Temperature Sensor Connector (20975509) – $12.79

What’s the price range for 2003 Mercury Mountaineer Engine Parts?

Engine Part prices for the 2003 Mercury Mountaineer start at $1.29 and go up to $3,839.99 for the most premium parts.

What’s the average price of a Engine Part for a 2003 Mercury Mountaineer?

The average price for Engine Parts for the 2003 Mercury Mountaineer is $218.97. Keep in mind the variety of part types within our Engine Part category so you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Engine Parts for other Mercury Mountaineer model years?

Yes, we currently carry Engine Parts for 12 model years of Mercury Mountaineers between 1997 and 2010. Engine Parts are bought most frequently for the following model years: 2010, 2009, 2008, 2007, 2006, 2005, 2004, 2002, and 2001.

What are the cheapest Engine Parts for my 2003 Mercury Mountaineer?

The cheapest 2003 Mercury Mountaineer Engine Parts we carry in stock are:

Steel Cup Expansion Plug 1-1/2 In., Height 0.220 (3492249) – $1.29
Steel Cup Expansion Plug 13.70mm, Height 0.180 (Sold by each) (22146590) – $1.79
Steel Cup Expansion Plug 1-1/2 In., Height 0.220 (22972463) – $2.29
Steel Cup Expansion Plug 1-1/2 In., Height 0.220 (sold by each) (16140194) – $2.99
Engine Valve Spring (19680045) – $3.99

What are the top-rated Engine Parts that fit the 2003 Mercury Mountaineer?

Out of 387 reviews by customers, our 2003 Mercury Mountaineer Engine Parts have an average customer rating of . These are some of the highest-rated Engine Part types for the 2003 Mercury Mountaineer and their top-rated products:

Engine Gaskets and Seals
- Engine Oil Pan Gasket Set – PermaDry molded rubber (15780335) – $32.99
- VALVE COVER GASKET SET (15780794) – $35.99
- Engine Oil Pan Gasket Set – PermaDry molded rubber (20688631) – $37.99
Valve Cover and Cylinder Heads
- Engine Oil Pan Gasket Set – PermaDry molded rubber (15780335) – $32.99
- VALVE COVER GASKET SET (15780794) – $35.99
- Engine Oil Pan Gasket Set – PermaDry molded rubber (20688631) – $37.99

What types of Engine Parts do you sell for my 2003 Mercury Mountaineer?

As of 11/2/25, these are some of the most in-demand types of Engine Parts for a 2003 Mercury Mountaineer:

Can I get help with 2003 Mercury Mountaineer Engine Part orders?

Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about Mercury Engine Parts and more.

What is your return policy for Mercury Mountaineer Engine Parts?

Advance Auto Parts keeps returns simple. For new Mercury Mountaineer Engine Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.

2003 Mercury Mountaineer Engine Parts

Sealed Power – Engine Balance Shaft Bearing Set (Part No.1892M)

Sealed Power – Engine Piston Set (Part No.H864CP .50MM)

Carquest Premium – Multi-Use Connector (Part No.ABA3459)

Cloyes Gear – Engine Timing Crankshaft Sprocket (Part No.S869)

Sealed Power – Engine Crankshaft Main Bearing Set (Part No.7245MA)

Carquest Premium – Engine Crankshaft Position Sensor (Part No.CSC1793)

Felpro – Engine Gasket Set (Part No.260-3153)

Felpro – Shaft Repair Sleeve (Part No.16270)

Sealed Power – Engine Connecting Rod Bearing (Part No.2600CP 20)

Melling – Engine Oil Priming Tool (Part No.MPL-201)

Melling – Stock Replacement Engine Assembly Lubricant (Part No.M-10012G)

Felpro – PermaTorque Engine Cylinder Head Gasket Set (Part No.HS 9293 PT-2)

Sealed Power – Engine Piston Ring Set (Part No.E-458K)

Edelbrock – Front Timing Cover Gasket Set #6991 For Small-Block Ford, With Front Seal (Part No.6991)

Cloyes Gear – TIMING CHAIN KIT (Part No.9-0387SKK3)

Felpro – Engine Oil Pan Gasket Set – PermaDry molded rubber (Part No.OS 30725 R)

Felpro – Engine Variable Valve Timing (VVT) Sensor Seal (Part No.ES 73032)

ARP Auto Racing – For Use With Ford Small Block 289/ 302 Cid, 2 Bolt Main, Hex Head, Chrome Moly (Part No.154-5001)

Sealed Power – Engine Oil Pump Screen (Part No.224-15063)

Felpro – Engine Valve Cover Gasket Set (Part No.VS 13264 T)

Sealed Power – Engine Exhaust Valve (Part No.V-1961)

Edelbrock – Signature Series Valve Covers: Small Block Ford 221-351W 62-95, Chrome Steel (Part No.4460)

Dorman – Help – Engine Oil Dipstick: Direct Replacement, Steel (Part No.917-423)

Sealed Power – Engine Piston Set (Part No.H878CP .50MM)

PowerBond – Premium OEM Replacement Harmonic Balancer; 179mm Diameter (Part No.PB1516N)

Motorcraft – REGULATOR AND MTR (Part No.WPT-439)

Cloyes Gear – Engine Balance Shaft Chain Guide (Part No.P436G)

Cloyes Gear – Engine Timing Chain (Part No.C387)

Felpro – VALVE COVER GASKET SET (Part No.VS 50529 R)

Felpro – Engine Oil Pan Gasket Set – PermaDry molded rubber (Part No.OS 30725 R)

Felpro – Engine Oil Pan Gasket Set – PermaDry molded rubber (Part No.OS 30687 R)

Felpro – Engine Crankshaft Seal Kit (Part No.BS 40619)

Felpro – Engine Valve Stem Oil Seal Set (Part No.SS 72891)

National – Multi-Purpose Seal (Part No.3393)

Felpro – Engine Valve Cover Gasket Set (Part No.VS 50564 R)

Felpro – Engine Oil Pan Gasket Set – PermaDry molded rubber (Part No.OS 34309 R)

Felpro – TIMING COVER GASKET SET (Part No.TCS 45986)

Felpro – Engine Crankshaft Seal Kit (Part No.BS 40644)

Felpro – Engine Crankshaft Seal Kit (Part No.BS 40647)

Felpro – VALVE STEM SEAL SET (Part No.SS 70858)

Felpro – Engine Timing Chain Tensioner Gasket Set (Part No.ES 73226)

Motorcraft – Original Equipment (O.E.) Gasket (Part No.CG-804)

Felpro – Engine Gasket Set (Part No.260-1898)

Felpro – Engine Gasket Set (Part No.260-3163)

Sealed Power – Engine Gasket Set (Part No.260-3163)

Felpro – Engine Conversion Gasket Set (Part No.CS 9790-4)

National – Shaft Repair Sleeve (Part No.99237)

Anchor – Engine Mount: Front Left, 1 Piece (Part No.3047)

Anchor – Engine Mount: Front Right, 1 Piece (Part No.3048)

National – Engine Harmonic Balancer Repair Sleeve (Part No.88187)

Carquest Premium – Chain Tensioner – Right (Part No.9533)

Cloyes Gear – Engine Timing Chain Tensioner (Part No.9-5587)

Cloyes Gear – Engine Timing Chain Tensioner (Part No.9-5586)

Cloyes Gear – Engine Timing Chain Tensioner (Part No.9-5432)

Cloyes Gear – Primary Timing Chain Kit: Exact Fit, 116 Links, Timing Components, With Sprockets (Part No.9-0387SG)

Cloyes Gear – Engine Timing Chain Tensioner (Part No.9-5433)

Cloyes Gear – Primary Timing Chain Kit: Exact Fit, 116 Links, Timing Components, Without Sprockets (Part No.9-0387SGX)

Cloyes Gear – Engine Timing Chain Guide (Part No.9-5429)

Cloyes Gear – Engine Timing Chain Guide (Part No.9-5428)

Cloyes Gear – Engine Timing Chain Kit (Part No.9-0444SF)

Dorman – Timing Chain Tensioner Kit (Part No.420-123)

Cloyes Gear – Primary Timing Chain Kit: Exact Fit, 62, 62, 78, 78 Links, Timing Components, Without Sprockets (Part No.9-0398SB)

Cloyes Gear – Engine Timing Chain Tensioner Guide (Part No.9-5340)

Cloyes Gear – Engine Timing Chain Kit (Part No.9-0398SD)

Cloyes Gear – Cassette Assembly, Engine Compartment Seal (Part No.9-0443SR)

Dorman – Timing Cover – Includes Gaskets and Seal (Part No.635-119)

Cloyes Gear – Engine Timing Chain (Part No.C387)

Cloyes Gear – Engine Timing Camshaft Sprocket (Part No.S766T)

Cloyes Gear – Primary Timing Chain Kit: Exact Fit, 62, 78, 78 Links, Timing Components, Without Sprockets (Part No.9-0398SC)

Cloyes Gear – Engine Timing Crankshaft Sprocket (Part No.S869)

Cloyes Gear – Engine Timing Chain Tensioner (Part No.P441)

Sealed Power – Engine Balance Shaft Bearing Set (Part No.1892M)

Cloyes Gear – Engine Timing Camshaft Sprocket (Part No.S764T)

Carquest – Air Charge Temperature Sensor Connector (Part No.28423)

Carquest Premium – Camshaft Sensor (Part No.CSC1031)

Carquest – Camshaft Sensor (Part No.35C1005)

NTK – Engine Camshaft Position Sensor (Part No.EC0117)

Carquest Premium – Camshaft Sensor (Part No.CSC1221)

National – Shaft Repair Sleeve (Part No.99166)