2003 Mercury Mountaineer Engine Cooling Parts

Essential 2003 Mercury Mountaineer Engine Cooling Parts

Felpro – Engine Water Pump Gasket (Part No.35474)

Engine Water Pump Gasket

from

$8.79
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
  • Manufactured for the sealing repair environment
  • Validated for fit, form, and function
  • Quality that you can trust
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CRP – Thermostat O-Ring (Part No.G403032487)

Thermostat O-Ring

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$2.29
Thermostat O-Ring

Dorman – Help – Radiator Drain Cocks (Part No.61127)

Radiator Drain Cocks

from

$6.99
This radiator drain petcock is a direct replacement for the original equipment plug that may have deteriorated or corroded. Made of quality materials, this petcock is engineered to strict standards for durable use over time.

Product Features:
  • Direct replacement – this radiator drain petcock matches the fit and function of the original equipment part.
  • Durable construction – this part is made of quality materials for a long service life
  • Saves money – offers original equipment quality at a competitive price
  • Quality assured – this petcock has undergone virtual testing to assure proper fit and function
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Imperial – Electric Fan 16" Diameter (Part No.226116)

Electric Fan 16" Diameter

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$92.99
Electric fan with 16″ diameter. Imperial electric fans are reversible for push or pull operation and are designed with a thin, aerodynamic profile for applications with limited space.

Product Features:
  • Rapid-Cool® Thin-Line electric fans
  • 16″ diameter
  • 1,400 CFM
  • Use as a pusher or puller fan
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Carquest Premium – Coolant Housing/Water Outlet: Gasket Included (Part No.85138)

Coolant Housing/Water Outlet: Gasket Included

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$58.99
We are proud to offer this CARQUEST product line: CARQUEST Water Outlets. Our products are engineered and tested to provide years of trouble free operation and designed to be hassle free OE replacement part that meets and/or exceeds OE standards. Backed by over 50 years of mobile temperature control experience, fix it once and fix it right with CARQUST Water Outlets and Thermostat Housings.

Product Features:
  • Meets and/or exceeds OEM standard
  • Includes quality gasket or O-ring to ensure proper seal (where applicable)
  • 100% virgin resin material to insure durability
  • 100% leak tested
  • Direct-fit replacement for ease of installation
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US MOTOR WORKS – Water Pump with Fan Clutch (Part No.MCK1057)

Water Pump with Fan Clutch

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$112.99
US Motor Works Professional Series Water Pump with Fan Clutch are designed to replace the mechanical components of a cooling system. A proper water pump replacement should include a new fan clutch as the two are connected to the same shaft and work together to move the air and cooling fluid. Replacing one without the other can damage the new part and cause repeat work or engine trouble. This matched set will allow your vehicle continued operation in the demanding environment of today’s engine. All components are brand new and QA inspected for perfect fit and function. Restore your cooling power by installing a US Motor Works Professional Series Water Pump with Fan Clutch.

Product Features:
  • Fan clutch mounts to the water pump and should be replaced at the same time.
  • Matched set for proper water pump or fan clutch replacement
  • Includes mounting hardware, gaskets and accessories as required.
  • Complete mechanical cooling parts replacement
  • Factory tested and 100% new product
  • Meets or exceeds OEM quality
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Carquest Premium – Engine Cooling Fan Module (Part No.ACC1313)

Engine Cooling Fan Module

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$94.99
All modern vehicles consist of several independent operating systems controlled by a main system processor with independent sub-processors. The sub-processors provide class 2 serial information data to the main processor while handling the operation of the system and carry the circuit load to protect the main operating system. When replacing any level processor programming may be needed to enter the unit into the vehicles main operating system.

Product Features:
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
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Dorman – Help – Engine Coolant Reservoir Cap: Flip Top, Plastic, 1 Pack (Part No.54209)

Engine Coolant Reservoir Cap: Flip Top, Plastic, 1 Pack

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$27.99
Cracked or lost the original engine coolant reservoir cap? Replace it seamlessly and effectively with this precisely engineered, direct replacement cap.

Product Features:
  • Direct replacement – this engine coolant reservoir cap directly replaces a cracked or lost original cap.
  • Application specific – made to match dimensions of reservoir cap on only certain vehicle years, makes and models
  • Seamless fit – reverse-engineered from the original equipment to fit perfectly
  • Excellent value – a quick, easy replacement that’s less expensive than going back to the dealership
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Permatex – Water Pump & Thermostat RTV Silicone Gasket Maker, 0.5 OZ (Part No.22071)

Water Pump & Thermostat RTV Silicone Gasket Maker, 0.5 OZ

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$6.99
Permatex Water Pump & Thermostat RTV Silicone Gasket Maker is a noncorrosive, sensor-safe RTV silicone gasket material formulated for water pumps and thermostat housings. Permatex Water Pump & Thermostat has the highest water-glycol resistance available in an RTV silicone.

Product Features:
  • Sensor-safe, noncorrosive RTV silicone gasket material
  • Formulated specifically for water pumps and thermostat housings
  • Highest water-glycol resistance available in RTV silicone
  • Superior adhesion and flexibility
  • Can be used as a gasket maker or dressing
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Carquest Premium – Hazard Warning Flasher (Part No.RAA1748)

Hazard Warning Flasher

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$19.99
Carquest premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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Dorman – Pressurized Coolant Reservoir: Clear, Plastic, Original Equipment Replacement (Part No.603-070)

Pressurized Coolant Reservoir: Clear, Plastic, Original Equipment Replacement

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$61.99
This replacement engine coolant reservoir is manufactured from quality materials to withstand the stresses of underhood heat and engine vibration. It is engineered and manufactured to match the fit and function of the original part.

Product Features:
  • Direct replacement – this engine coolant reservoir matches the fit and function of the original part.
  • Ideal solution – engineered for a seamless installation.
  • Durable construction – manufactured from quality materials to withstand underhood heat and vibration
  • Trustworthy design – backed by 100 years of automotive aftermarket experience
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Mahle – Engine Coolant Thermostat Housing Gasket (Part No.G4020427748MAH)

Engine Coolant Thermostat Housing Gasket

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$8.40
The Mahle Engine Coolant Thermostat Housing Gasket is a high quality Original Equipment replacement that is manufactured to meet or exceed OE specifications for fit, form, and function.

Product Features:
  • Seals the thermostat housing and helps prevent coolant from leaking from the engine for proper engine temperature
  • Premium Original Equipment replacement
  • Provides performance and dependability
  • Manufactured to meet OE specifications
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Imperial – Electric Fan – 14" Diameter (Part No.226114)

Electric Fan - 14" Diameter

from

$99.99
Product Features:
  • Motors built and tested to quality specifications
  • 14 in. universal fit reversible fan
  • 1250 CFM
  • UNIVERSAL fan, NOT a direct OE replacement. Measure core and verify space.
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Dorman – 6 Wire Pigtail – Watertight Round Female Connector With Male Terminals (Part No.645-101)

6 Wire Pigtail - Watertight Round Female Connector With Male Terminals

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$33.99
Make better electrical repairs and accessory installations with this pigtail connector. Designed for a clean appearance when installed, it features weatherproof terminals and a locking tab for a reliable quick disconnect electrical connection.

Product Features:
  • Professional appearance – this electrical pigtail is designed for a clean, professional look when installed.
  • Convenient solution – this pigtail connector allows the circuit to be quickly disconnected for service or occasional use
  • Durable construction – this pigtail connector features weatherproof seals and a locking tab for a reliable connection
  • Versatile component – this connector can be used in a variety of repairs and custom installations
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Dorman – Thermostat Assembly: Includes Housing, 2 Clamps, and Hose, 192 Degrees (Part No.902-1999)

Thermostat Assembly: Includes Housing, 2 Clamps, and Hose, 192 Degrees

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$225.99
Original equipment thermostat housing assemblies often fail due to weak plastic construction. This Dorman OE FIX replacement upgrades the housing to metal to prevent warping and future failures..

Product Features:
  • Upgraded replacement – this integrated coolant thermostat housing assembly is made of metal to increase durability.
  • Failure-resistant design – reengineered to prevent cracks and leaking that occur in the factory design.
  • Complete repair – comes with thermostat housing, sensor, thermostat, gasket and O-ring
  • Quality engineering – designed in the United States and backed by decades of automotive aftermarket experience
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Koyo Cooling – Radiator (Part No.G1000171366KCS)

Radiator

from

$311.19
Plastic Tank / Aluminum Core Radiator Koyo radiators are available in plastic tank and aluminum core. The Nocolok brazing line keeps the highest quality standards, bringing you superior products you can rely on. The Koyo Cooling radiator has been engineered to the highest standards and incorporates application specific mounting locations for all fan shrouds, inlet-outlet hoses and top-bottom mounting pins, ensuring quick and pain-free installs.

Product Features:
  • All Aluminum Core and Plastic Tank
  • OE Style mounting brackets and hose connections
  • Integrated transmission oil cooler when applicable
  • Compact and lightweight
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Dorman – Help – Radiator Cap (Part No.54237)

Radiator Cap

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$22.99
This radiator cap is designed to match the fit and function of the original cap on specified vehicles, and is engineered for durability and reliable performance.

Product Features:
  • Direct replacement – this radiator cap is designed to match the fit and function of the original cap on specified vehicles.
  • Restores functionality – reliable replacement for an original cap that is missing, leaking or failed due to gasket fatigue and heat
  • 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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Felpro – Multi-Purpose O-Ring (Part No.35489)

Multi-Purpose O-Ring

from

$9.99
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
  • Manufactured for the sealing repair environment
  • Validated for fit, form, and function
  • Quality that you can trust
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Carquest Premium – Connector (Part No.PTA1198)

Connector

from

$24.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Premium quality materials for longer service life
  • 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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Carquest Premium – Radiator Cap Tester Adapter (Part No.12029)

Radiator Cap Tester Adapter

from

$40.99
Tester adapter for the MT-300 cooling system pressure testers. Professional grade test equipment to ensure an automotive cooling system is operating at the correct pressure. Made from high quality materials to ensure durability. Designed to test automotive coolant caps.

Product Features:
  • Machined metal construction
  • Works with MT-300 pressure tester
  • Tests coolant caps
  • Professional quality
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Felpro – WATER PUMP GASKET SET (Part No.ES 73048)

WATER PUMP GASKET SET

from

$6.79
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
  • Manufactured for the sealing repair environment
  • Validated for fit, form, and function
  • Unsurpassed quality you can trust
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Dorman – Engine Water Pump Pulley (Part No.300-942)

Engine Water Pump Pulley

from

$26.99
Damaged your engine water pump pulley? This pulley is a direct replacement for the original manufacturer’s part on specific vehicle years, makes and models, restoring proper performance.

Product Features:
  • Direct replacement – this engine water pump pulley matches the fit and function of the original part on specific vehicles.
  • Durable design – built to withstand the elements and road debris.
  • Thoroughly tested – must pass strict standards to ensure reliable longevity
  • Trustworthy quality – backed by team of engineers and inspectors in United States
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Carquest Premium – Temperature Sender With Gauge and Thread Sealant (Part No.WTC1021)

Temperature Sender With Gauge and Thread Sealant

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$15.99
Approved materials for increased durability in even the most extreme temperatures. All MotoRad Coolant Temperature Sensors are designed to meet or exceed OEM specifications at our ISO TS16949 manufacturing facilities.

Product Features:
  • 100% factory resistance calibrated to ensure precision tolerances, resulting in extremely accurate temperature for optimal performance
  • Thread Sealant and/or O-ring pre-installed on applicable sensors to ensure leak free performance
  • Brass sensor housing precision machined to meet or exceed OE thermal conductivity
  • OE precision matched thermistor position for correct output parameters
  • Extensive product testing includes salt spray, high/low temperature impact, thermal vibration, durability, static electricity, and micro tension, among other tests, to ensure all sensors meet or exceed OEM specifications.
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Carquest Premium – Universal Fan Clutch – 7" Thermal Heavy Duty (Part No.215124)

Universal Fan Clutch - 7" Thermal Heavy Duty

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$93.99
Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. The fan clutch is the component of the cooling system that varies the fan speed to meet the cooling needs of the engine. The fan clutch provides high airflow volume and, by only operating the fan as needed, promotes good fuel economy. CARQUEST fan clutches are designed to meet OE performance specifications.

Product Features:
  • CARQUEST Premium Fan Clutch
  • 7″ thermal heavy-duty
  • Designed, tested and built by application
  • OE performance, fit and appearance
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Motorcraft – ENGINE WATER PUMP (Part No.PW-423)

ENGINE WATER PUMP

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$124.99
ENGINE WATER PUMP

Motorad – Standard Thermostat: 180 Degrees (Part No.244-180)

Standard Thermostat: 180 Degrees

from

$6.79
Manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.

Product Features:
  • High grade stainless steel and copper construction
  • Meets or exceeds OEM standards
  • Consistent and precise response to cooling system needs
  • Original equipment design for worry-free direct fit replacement
  • 100% tested and calibrated
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Felpro – O-RING (Part No.35617)

O-RING

from

$3.99
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
  • Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
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Permatex – The Right Stuff: Grey, 1 Minute Gasket Maker, 10 OZ (Part No.34310)

The Right Stuff: Grey, 1 Minute Gasket Maker, 10 OZ

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$38.99
Permatex’s The Right Stuff 1 Minute Series offers the fastest return to service in just 1 minute! This leak-proof, elastomeric “Formed-in-place” material is more reliable and longer lasting than pre-cut gaskets. It is blowout resistant and protects against leaks and seepage caused by vibration and thermal expansion. The Right Stuff 1 Minute Grey is specified for high torque and high vibration applications and is formulated to meet or exceed performance standards for long-term sealability, durability and handling.

Product Features:
  • Designed to perform under higher torque loads associated with engines having closely spaced bolt patterns
  • Sensor-safe, non-corrosive, RTV silicone
  • Protects against leaks caused by vibration and thermal expansion
  • Meets performance specs of OE silicone gaskets
  • Quickly returns vehicle to service in just 1 minute
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2003 Mercury Mountaineer Engine Cooling Parts

Maybe you’re in the middle of a full rebuild of that 2003 Mercury Mountaineer. Maybe you just need a couple of Engine Cooling Parts. Either way, Advance Auto Parts has 87 different Engine Cooling Parts in our inventory ranging from $1.44 to $367.99. That means you can find the exact parts or products you need to keep that 2003 Mercury Mountaineer running smoothly.

Engine Cooling Parts are only as good as their brand. We stock 20 different brands to make sure you have plenty of trusted parts to choose from for your 2003 Mercury Mountaineer. Permatex, Carquest Premium, and FELPRO are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

We know you’ll find the perfect Engine Cooling Parts for your 2003 Mercury Mountaineer, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 1,748 reviews in this category, some of the top rated parts include Water Pump: New, Installation Gasket Included with 4.4 stars and Thermostat Assembly: Includes Housing, Gasket, Bolts, and Sensor Clip with 4.1 stars.

So if you’re in the market for aftermarket Engine Cooling Parts to keep your 2003 Mercury Mountaineer rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

Engine Cooling Parts Brands To Make Your 2003 Mercury Mountaineer Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 2003 Mercury Mountaineer demands trusted brand parts and products to keep it running. Many trusted brands of Engine Cooling Parts make up Advance Auto Parts’ inventory, and all are ready to help make your Mountaineer the best it can be. Be sure to browse some of our top Engine Cooling Parts brands and parts.

Popular Motorad UltraStats Engine Cooling Parts

We carry Motorad UltraStats parts in our stock across Thermostats categories, plus more. For a 2003 Mercury Mountaineer, our most popular Motorad UltraStats Engine Cooling Parts include:
Thermostat: 180 Degrees
from $18.29
(1)
Thermostat: 180 Degrees
Thermostats

FAQs for 2003 Mercury Mountaineer Engine Cooling Parts

What are the most purchased Engine Cooling Parts for the 2003 Mercury Mountaineer?

Out of 87 Engine Cooling Parts for the 2003 Mercury Mountaineer, the most popular in our inventory are:
Water Pump & Thermostat RTV Silicone Gasket Maker, 0.5 OZ
from $6.99
(288)
Water Pump & Thermostat RTV Silicone Gasket Maker, 0.5 OZ
Water Pump Housing Gaskets
Multi-Purpose O-Ring
from $9.99
(110)
Multi-Purpose O-Ring
Thermostat Housing O-Rings
Standard Thermostat: 192 Degrees
from $25.99
This product is not rated
Standard Thermostat: 192 Degrees
Thermostats

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

Top-rated Engine Cooling Parts for your 2003 Mercury Mountaineer based on customer reviews/ratings are:
Water Pump: New, Installation Gasket Included
from $75.99
(112)
Water Pump: New, Installation Gasket Included
“Part was perfect and came very fast”
Thermostat Assembly: Includes Housing, Gasket, Bolts, and Sensor Clip
from $82.99
(94)
Thermostat Assembly: Includes Housing, Gasket, Bolts, and Sensor Clip
“Installed, and worked as expended .”
THERMOSTAT GASKET
from $5.49
(42)
THERMOSTAT GASKET
“Thermostat housing on 2008 Explorer. Fit just like it was suppose to.”