2003 Chevrolet Trailblazer Engine Parts

Essential 2003 Chevrolet Trailblazer Engine Parts

Dorman – Engine Harmonic Balancer/Pulley Assembly (Part No.A2210682657DOR)

Engine Harmonic Balancer/Pulley Assembly

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$112.62
Durable and sleek, Dorman Harmonic Balancers feature a stress-resistant rubber bond that withstands the damaging effects of heat, salt, ozone and general wear and tear. The ductile steel construction allows for improved tensile and impact strength, safeguarding the engine and maintaining fuel efficiency year after year. Dorman Harmonic Balancers undergo detailed dimensional checks of the full assembly and critical components to ensure the strength and integrity of the part.

Product Features:
  • Includes woodruff key, bolts, and washers for a complete repair (where applicable)
  • Direct replacement to ensure proper fit
  • Ships with protective sleeve over cone and trigger to prevent damage (where applicable)
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Sealed Power – Engine Crankshaft Main Bearing Set (Part No.7298MA 10)

Engine Crankshaft Main Bearing Set

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$120.99
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:
  • 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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SKF – Crankshaft Seal (Part No.A8060854543SKF)

Crankshaft Seal

from

$39.96
Crankshaft Seal

Imperial – Econo-Kool® Engine Oil Cooler (Part No.240459)

Econo-Kool® Engine Oil Cooler

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$141.99
Product Features:
  • Imperial Econo-Kool« engine oil cooler kit
  • Size: 3/4″ x 7-1/2″ x 12-1/2″
  • Light-duty applications
  • All except Chevrolet V8 applications
  • Size: 3/4 in. x 7-1/2 in. x 12-1/2 in.
  • Light duty applications
  • All except Chevrolet V8 applications
  • Lightweight construction with high-efficiency turbulators
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Cloyes Gear – Primary Timing Chain Kit: Exact Fit, 60 Links, Timing Components, With Sprockets (Part No.9-4205S)

Primary Timing Chain Kit: Exact Fit, 60 Links, Timing Components, With Sprockets

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$74.99
Designed for the replacement of worn or damaged timing chains, tensioners, and guides, Timing Chain Kits includes all components for a quick and efficient replacement. Each part is 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.

Product Features:
  • 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
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ACDelco – Timing Chain Tension (Part No.A5110355346ACD)

Timing Chain Tension

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$65.47
The ACDelco GM Original Equipment Engine Timing Chain Tensioner is a GM-recommended replacement for your vehicle’s original component. It keeps the engine timing chain at the proper tension for a long and trouble-free life. This original equipment engine timing chain tensioner has been manufactured to fit your specific GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:
  • Maintains the proper tension in the engine timing chain in your vehicle for proper performance
  • Designed to GM OE specifications to optimize component life and prevent noise
  • Validated to perform with critical engine management sensors, such as cam position sensors, to ensure that new parts will not turn on the Check Engine light in your vehicle
  • Designs are enhanced and amended to incorporate updates, upgrades, and Technical Service Bulletins
  • GM-recommended replacement part for your GM vehicle’s original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function
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ACDelco – Timing Chain (Part No.12646386)

Timing Chain

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$74.99
ACDelco GM Original Equipment Engine Timing Chains synchronize the rotation of the crankshaft and camshaft(s) in an internal combustion engine. They help ensure that the engine’s valves open and close at the proper time during each cylinder’s intake and exhaust strokes, and are GM-recommended replacements for your vehicle’s original components. These original equipment timing chains have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:
  • Synchronizes the rotation of the crankshaft and the camshaft(s) to help ensure that the engine’s valves open and close at the proper time during each cylinder’s intake and exhaust strokes
  • GM-recommended replacement part for your GM vehicle’s original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function
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ACDelco – GM Original Equipment Fuel Pump Tank Seal (Part No.E3004295098ACD)

GM Original Equipment Fuel Pump Tank Seal

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$22.52
The ACDelco GM Original Equipment Fuel Pump Tank Seal is a GM-recommended replacement component that provides the same performance, durability, and service life as your factory original equipment.

Product Features:
  • GM-recommended replacement part for your GM vehicle’s original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function
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Felpro – O-RING (Part No.73193)

O-RING

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$4.49
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
  • 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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ACDelco – GM Original Equipment Motor Mount (Part No.A7000279839ACD)

GM Original Equipment Motor Mount

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$146.89
The ACDelco GM Original Equipment Motor Mount is a GM-recommended replacement component that provides the same performance, durability, and service life as your factory original equipment.

Product Features:
  • GM-recommended replacement part for your GM vehicle’s original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function
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BSE Original – Body Control Module (Part No.BCM13895M)

Body Control Module

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$91.99
Blue Streak Electronics is the leader in remanufactured electronics since 1987 and a name synonymous with OE performance. Blue Streak Electronics provides the highest quality, most comprehensive line of Engine, Transmission, Body, Powertrain control modules, Mass Air Flow Sensors, Diagnostic tools and Flash Programming solutions.

Product Features:
  • BSE Remanufactured Body Control Modules are 100% tested to perform like new. OEM designs are analyzed, and design upgrades are implemented when necessary to provide improved durability over the OEM design.
  • OEM Modules are completely disassembled, cleaned, and inspected for wear & damage.
  • Worn and non-functioning components are replaced with upgraded new components to improve reliability and performance.
  • Common fail components are 100% replaced with new higher quality components.
  • All modules are 100% tested to meet or exceed OEM performance specifications.
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ACDelco – Oil Filler Cap Gaske (Part No.A6150209855ACD)

Oil Filler Cap Gaske

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$5.22
Oil Filler Cap Gaske

Felpro – Cylinder Head Gasket: Multi-Layered Steel, Without Head Bolts (Part No.26192 PT)

Cylinder Head Gasket: Multi-Layered Steel, Without Head Bolts

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$87.99
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:
  • PROPRIETARY COATING — Exclusive coating helps withstand rougher sealing surface finishes up to 80 Ra
  • UNIQUE COMBUSTION SEAL — Exclusive LaserWeld 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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Dorman – Help – Engine Oil Filler Cap (Part No.42315)

Engine Oil Filler Cap

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$13.99
This engine oil filter 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 engine oil filter cap is designed to match the fit and function of the original cap on specified vehicles
  • Restores functionality – reliable replacement for an original part that is missing or cracked due to heat and 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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Dorman – Timing Cover Kit – Includes Gasket (Part No.635-515)

Timing Cover Kit - Includes Gasket

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$102.99
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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ACDelco – Multi-Purpose Pigtail Kit with Splices (Part No.PT2796)

Multi-Purpose Pigtail Kit with Splices

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$70.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:
  • Protective outer coverings help provide long-lasting durability
  • Color-coded wires allow for easy installation
  • GM-recommended replacement part for your GM vehicle’s original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function
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Sealed Power – Engine Connecting Rod Bearing Set (Part No.8-2555A 60)

Engine Connecting Rod Bearing Set

from

$143.99
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:
  • A-Series bi-metal aluminum alloy
  • Greater seizure resistance than tri-metal material
  • Dramatically reduces or eliminates bearing wear
  • Made with silicon to provide greater surface hardness
  • Silicon particles help polish crankshaft journal to further reduce wear during operation
  • Utilizes ISO & QS certified manufacturing
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Dorman – Help – Engine Bearing Bolt Set (Part No.45691)

Engine Bearing Bolt Set

from

$43.99
This engine crankshaft main bearing cap bolt 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 crankshaft main bearing cap bolt matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this bolt 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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Cloyes Gear – Engine Timing Camshaft Sprocket (Part No.S908)

Engine Timing Camshaft Sprocket

from

$54.99
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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ACDelco – Camshaft Position Sensor (Part No.213-3826)

Camshaft Position Sensor

from

$70.99
ACDelco GM Original Equipment Engine Camshaft Position Sensors monitor the rotational position of the camshaft(s), and are GM-recommended replacements for your vehicle’s original components. They provide a signal to the engine control module which compares the camshaft position with the crankshaft position to determine ignition and fuel injection timing. These original equipment engine camshaft position sensors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:
  • Helps keep engine timing and fuel injection running in sync
  • Helps provide proper alignment, positioning, and spacing for easy installation
  • Synchronizes engine valves and pistons for excellent engine performance
  • GM-recommended replacement part for your GM vehicle’s original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function
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Carquest Premium – Chain Tensioner (Part No.91049)

Chain Tensioner

from

$37.99
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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Mahle – Valve Stem Seal Kit (Part No.A8069849331MAH)

Valve Stem Seal Kit

from

$40.12
Valve Stem Seal Kit

Carquest – Air Charge Temperature Sensor Connector (Part No.PT778)

Air Charge Temperature Sensor Connector

from

$35.99
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:
  • Our knock sensors are designed to respond to knock frequencies up to 1000 Hz accommodating shifts in engine knock frequency making it a more flexible sensor responding to correct engine knock over a broad range of vehicle conditions
  • Manufacturing processes include an automated data acquisition system to continuously monitor the sensor output to ensure that it responds with appropriate voltage output at the specified frequency range
  • All units are 100% tested using an accelerometer vibration test to ensure trouble-free operation
  • Featuring the broadest sensor coverage in the market, we meet the service professionals needs with the highest quality product every time he opens the box
  • BWD is a global manufacturer of original equipment ignition products, complete quality control is maintained through the manufacturing process from componentry to finished product
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ACDelco – Engine Oil Level Sensor (Part No.D8055)

Engine Oil Level Sensor

from

$39.99
An ACDelco Professional, premium aftermarket Engine Oil Level Sensor is a high quality replacement for many vehicles on the road today. It measures the oil level in your vehicle’s oil pan and will send warnings to the information center or dash panel if oil levels reach a level that is too low, as determined by General Motors engineers. This premium aftermarket replacement engine oil level sensor is manufactured to meet your expectations for fit, form, and function.

Product Features:
  • Professional, premium aftermarket replacement
  • Provides the performance and dependability you expect from ACDelco
  • Manufactured to meet expectations for fit, form, and function
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Melling – Stock Replacement Type Oil Pump Repair Kit (Part No.K322)

Stock Replacement Type Oil Pump Repair Kit

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$182.99
Melling oil pump repair kits are provided to supply the parts needed to rebuild a specific individual oil pump. Melling kits include all the required parts needed for a quality oil pump rebuild. Although Melling recommends the installation of a new oil pump, Melling oil pump repair kits are the preferred choice when a rebuilder has the desire to reuse the original oil pump casting or front timing cover.

Product Features:
  • Includes components needed to rebuild a worn oil pump providing an alternative to purchasing a new oil pump
  • Components are manufactured from high quality materials for durable wear
  • Components are precision engineered for optimum fit and function
  • Designed for long-life and worry-free performance
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Felpro – Engine Crankshaft Seal Kit (Part No.BS 40678)

Engine Crankshaft Seal Kit

from

$21.49
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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Mahle – Cyl. Head Bolt Set (Part No.A3031575074MAH)

Cyl. Head Bolt Set

from

$123.74
Cyl. Head Bolt Set

Felpro – CYLINDER HEAD BOLT SET (Part No.ES 72220)

CYLINDER HEAD BOLT SET

from

$46.99
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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2003 Chevrolet Trailblazer Engine Parts

You count on your 2003 Chevrolet Trailblazer to run right. That means taking care of it with regular maintenance, necessary repairs, and the right parts. Advance Auto Parts can help with all of that thanks to our extensive inventory of trusted Engine Parts. With 90 Engine Parts ranging in price from $2.54 to $3,479.99, you’re sure to find everything you need for your 2003 Chevrolet Trailblazer.

Brands matter. If you want to shop a specific Engine Parts brand, we stock 22 different brands like Felpro, Carquest Premium, and Carquest. 2003 Chevrolet Trailblazer Engine Parts start as low as $2.54!

One of the best ways to find top quality OEM or aftermarket Engine Parts is by asking professionals. Short of that, you can shop with confidence thanks to our 414 extensive product reviews on 2003 Chevrolet Trailblazer Engine Parts. Some of the top-rated Engine Parts products we carry are Variable Valve Timing Solenoid with 4.7 stars and Multi Purpose Seal with 4.5 stars.

Did we mention you can order your Engine Parts from our online catalog and have them shipped right to your garage? Or, if you feel like seeing the parts first-hand, search for your nearest Advance Auto Parts location above and pick up in-store when you’re ready. Browse our full Engine Parts inventory for your 2003 Chevrolet Trailblazer below to get started!

Top-Rated Engine Parts Brands For Your 2003 Chevrolet Trailblazer

Trusted Engine Parts OEM and aftermarket product brands are what Advance Auto Parts specializes in. The brands we work with are sure to keep that 2003 Chevrolet Trailblazer running right for years to come. In our inventory you’ll find brands like Felpro, Carquest Premium, Carquest, and even more.

Popular Anchor Engine Parts

You’ll find popular Anchor brand products across Engine Mounts. All are waiting to get your 2003 Chevrolet Trailblazer back on the road. Some of the top-rated Anchor products in these categories are:
Engine Mount: Front Left, Front Right, 1 Piece
from $62.99
(1)
Engine Mount: Front Left, Front Right, 1 Piece
Engine Mounts

Top-Rated Felpro Engine Parts


If Felpro are what you’re looking for, our inventory holds plenty. We stock Felpro brand Engine Parts for your 2003 Chevrolet Trailblazer, and some of our most reviewed Felpro parts include:
Fuel Injector O-Ring Kit
from $7.49
(109)
Fuel Injector O-Ring Kit
O-Rings
Fuel Injector O-Ring Kit
from $8.99
(14)
Fuel Injector O-Ring Kit
O-Rings
Engine Valve Cover Gasket Set
from $31.49
(5)
Engine Valve Cover Gasket Set
Valve Cover Gaskets

FAQs for 2003 Chevrolet Trailblazer Engine Parts

What are the most purchased Engine Parts for the 2003 Chevrolet Trailblazer?

Out of 90 Engine Parts for the 2003 Chevrolet Trailblazer, the most popular in our inventory are:
Camshaft Sensor
from $47.99
This product is not rated
Camshaft Sensor
Camshaft Position Sensors
Engine Variable Valve Timing (VVT) Solenoid
from $64.05
(6)
Engine Variable Valve Timing (VVT) Solenoid
Engine Variable Timing Solenoids

What are the top-rated 2003 Chevrolet Trailblazer Engine Parts?

Top-rated Engine Parts for your 2003 Chevrolet Trailblazer based on customer reviews/ratings are:
Variable Valve Timing Solenoid
from $63.99
(26)
Variable Valve Timing Solenoid
“Perfect OEM fit and solved that problem.”
Multi Purpose Seal
from $17.49
(8)
Multi Purpose Seal
“Exact part. No problems.”
Econo-Kool® Engine Oil Cooler
from $141.99
(3)
Econo-Kool® Engine Oil Cooler
“Good price perfect fit had all the parts I needed good quality”