2003 Chevrolet Trailblazer Engine Cooling Parts

Name: Radiator: With Transmission Oil Cooler
Brand: Carquest Premium
SKU: 432403
Price: 209.99 USD
Rating: 4.5 (29 reviews)

Please Select your Vehicle to See Exact Fit Parts

Keep Your 2003 Chevrolet Trailblazer in Top Shape with Quality Engine Cooling Parts

Whether you’re repairing or upgrading your Engine Cooling Part, using high-quality parts is key to keeping your 2003 Chevrolet Trailblazer looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Radiators, Water Pump Gaskets, and Thermostats. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Top-Rated Engine Cooling Parts from Trusted Brands

Looking for a reliable Engine Cooling Part? We’ve got you covered with options from brands you know and trust like Carquest Premium, Dorman, and Felpro. For example, Carquest Premium Engine Cooling Parts start at just $15.99 with an average 4.4 star rating. Dorman and Felpro offer similar pricing and quality, backed by strong customer feedback. With over 1,210 reviews and a solid 4 star average, you can shop with confidence knowing other Chevrolet Trailblazer owners approve.

Competitive Prices and Extensive Inventory

The average price for a 2003 Chevrolet Trailblazer Engine Cooling Part at Advance Auto Parts is around $68.65, with a range that starts at $4.99 and goes up to $278.99. With 37 options in stock from 11 trusted brands, finding the right fit is easy. Popular picks like Radiator: With Transmission Oil Cooler, Adjustable Thermostatic Fan Control, and Electric Fan, 12" Diameter start at just $23.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Engine Cooling Part, don’t forget to check out other key components like Blower Motor and Related Products and HVAC Electrical Parts. At Advance Auto Parts, we’re here to help you keep your 2003 Chevrolet Trailblazer in peak condition, inside and out.

Looking for the perfect Engine Cooling Part for your 2003 Chevrolet Trailblazer? You’re in the right place. Below, you’ll find links to various types of Engine Cooling Parts that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Engine Cooling Parts, ensuring durability and a precise fit for your Chevrolet Trailblazer. Whether you’re driving a 2003 model or another popular model year like 2004, 2005, 2006, 2007, 2008, 2009, 2021, 2022, and 2023, we’ve got you covered. Purchasing Engine Cooling Parts from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Engine Cooling Parts that fit your vehicle.

Essential 2003 Chevrolet Trailblazer Engine Cooling Parts

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$209.99

Carquest Premium Radiators offer one of the largest product ranges in the aftermarket, covering more than 95% of the popular automotive and light truck applications. Carquest Premium Radiators meet or exceed original equipment specifications, ensuring that products fit and perform just as well or better than the original parts, providing you peace of mind.

Product Features:

Our B-type tubes feature central reinforcement to provide greater tolerance to pressure. Stronger tube design means drastically reduced probability of tube failure.
Our deep extrusion header provides a stronger tube to header joint which is more resistant to the effects of vibration and thermal tube expansion, virtually eliminating tube to header leaks.
Our fin edges are folded for increased stability and heat disbursement properties.
Our included “multi-fit” attachments allow one radiator to cover multiple vehicle applications without sacrificing OE fit. This results in wider vehicle coverage with substantially less inventory.
Thermal expansion cuts allow for longer life and reduce failure rates by allowing improved core expansion and contraction during normal heat cycles.
We design and manufacture all our radiators to meet or even exceed Original Equipment specifications. We take pride in producing the most reliable replacement parts in the market.
We use longer header tabs for increased pressure resistance. This reduces the potential for tank to header leaks.

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$19.99

The engine cooling system is critical to engine sustainability under all operating conditions. The Coolant Level Sensor reports the level of coolant either in the radiator overflow container or in the radiator tank.

Product Features:

Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
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.

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$22.99

Crafted to meet the exact specifications set by Original Equipment Manufacturers (OEM), these products are engineered for effortless installation and removal. Constructed from premium-grade components, incorporating proper relief and vacuum valves, they ensure optimal performance even in the most demanding automotive cooling systems. Rigorously quality-tested, these components provide exceptional, out-of-the-box performance and superior durability to meet or exceed the highest standards of today’s vehicles.

Product Features:

Maintains proper cooling system pressure
Easy installation and removal
100% tested to ensure proper pressure and longevity
Meets all OEM specifications

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$68.99

Carquest Premium Integrated Housing Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This integrated thermostat housing 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 as well as the design and function of the housing. Offset design, air relief valve, and OEM style seals included where applicable.

Product Features:

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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$13.99

Product Features:

Choosing Victor Reinz assures getting OE quality parts in gaskets sets that have the coverage, contents, packaging and electronic cataloging to best meet the needs of the aftermarket.
Application specific design provides an exceptional fit.
Validated for fit, form, and function.
Meets or exceeds original equipment specifications.

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$26.49

Direct-fit replacement for ease of installation

Product Features:

Meets and/or exceeds OEM standard
Direct-fit replacement for ease of installation
100% leak tested
Meets and/or exceeds OEM standard
100% leak tested
Direct-fit replacement for ease of installation

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$52.99

GM Genuine Parts Wiring Relays are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These relays help connect or disconnect power to a vehicle accessory when it receives a low voltage signal from a switch. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Product Features:

Helps connect or disconnect power to vehicle accessories
Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies

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$39.99

ACDelco Professional Engine Coolant Temperature Sensor is a high quality aftermarket replacement component for one or more of the following vehicle systems: ignition, and/or engine fuel management. This premium aftermarket sensor is manufactured to meet or exceed 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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$44.99

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.
Product constructed to meet all design and operating characteristics as intended by the manufacturer.

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$278.99

This engine cooling fan clutch directly replaces the original equipment part on specified vehicles. It is engineered for durability and made of quality components to ensure proper cooling system operation when the original fan clutch has failed.

Product Features:

Ideal replacement – this cooling fan clutch directly replaces the original fan clutch on specified vehicle years, makes and models
Durable construction – this fan clutch is designed to withstand extreme temperature to ensure proper cooling system operation
Cost-effective solution – offers original equipment fit and function at a competitive price
Trustworthy quality – backed by a team of designers and engineers in the United States

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$36.99

New Platinum Pro Radiator Fan Shroud, 4.2 Liter Engine

Product Features:

4.2 Liter Engine
Meets All Federal Motor Safety Standards
No Drilling Needed For Installation
No Modifications Needed For Installation
Direct Fit Replacement For Your Vehicle
Same Form Fit And Function As OE
Check Out The Large Selection Of Parts Available For Your Vehicle

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$99.99

Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.

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.
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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$279.99

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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$7.49

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
Manufactured for the sealing repair environment
Validated for fit, form, and function
Quality that you can trust

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$70.99

Adjustable Thermostatic Fan Control. 160-210°F; push-in probe. Controls the operating temperature of Imperial electric fans. Operates up to 2 fans.

Product Features:

Adjustable thermostatic fan control
160-210°F push-in probe
For use with Imperial electric fans
Probe installs into radiator fins

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$23.99

Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.

Product Features:

Economy adjustable thermostatic fan control
Economy Model; 32-248 Deg. F
For use with Imperial electric fans
Probe installs into radiator fins
Contains gaskets, O-rings, or seals to properly replace the product
Brass construction for accurate temperature sensing
Zinc coated terminal to resist corrosion
Vehicle specific applications

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$51.99

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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$1035.00

MotoRad Coolant Control Valves are designed and tested to provide precise and quick coolant redirection for every application. Manufactured using the finest OEM approved materials and electrical isolation features for increased durability and safety in the most extreme temperatures and conditions. All MotoRad Coolant Control Valves are designed to meet or exceed OEM specifications at our ISO TS16949 manufacturing facilities.

Product Features:

An efficient Coolant Control Valve is critical to cooling the engine and other components by ensuring the coolant is directed to the proper channel where needed
Designed to meet or exceed OE in fit, form and function
100% factory tested to ensure proper signal response and isolation providing unmatched performance and quality
100% factory tested to ensure proper signal response and isolation providing unmatched performance and qualityá
Manufactured using the highest quality materials for increased durability in even the most extreme environments.
Extensive product testing includes high/low temperature impact, thermal vibration, durability, static electricity, and micro tension, among other tests, to ensure all Coolant Control Valves meet or exceed OEM specifications

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$53.99

This replacement engine coolant thermostat housing is engineered to match the fit and durability of the stock thermostat housing on specified vehicles. It is designed to withstand extreme temperature changes to extend service life.

Product Features:

Ideal replacement – this engine coolant thermostat housing directly replaces the original housing on specified vehicle years, makes and models
Durable construction – this part is specifically designed to withstand extreme temperature changes and resist cracking and leaking
Cost-effective and reliable – offers original manufacturer quality at lower cost than getting replacement at dealer
Industry-leading design – professionally engineered by the aftermarket leader in replacement thermostat housings

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$104.99

This replacement engine water pump is leak and flow tested. Gaskets and seals are included where applicable.

Product Features:

This pump is used on accessory belt driven applications
Used mostly on models equipped with a fan clutch
It is highly recommended that the fan clutch be replaced with the water pump
All gaskets or seals necessary for installation are supplied with pump
Durable housing features precisely machined mounting surfaces for proper sealing

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$133.99

An ACDelco Professional, premium aftermarket Engine Water Pump circulates coolant through your vehicle’s radiator and engine system to help maintain proper engine temperature and performance. The gaskets, seals, and O-rings packaged with this Professional, premium aftermarket water pump help guarantee that all necessary parts are available for trouble-free installation. ACDelco Professional Water Pumps are a high quality replacement for many vehicles on the road today. This premium aftermarket replacement engine water pump is manufactured to meet your expectations for fit, form, and function.

Product Features:

All Makes water pumps fit GM vehicles as well as a wide range of non-GM vehicles
Thoroughly tested for reliable, leak-free performance
Coated seals support seal longevity and durability
Heat-treated shaft assemblies provide superior strength and durability over non-treated assemblies
High-quality bearings are permanently sealed and lubricated for greater durability and long life
Come with premium, high-quality replacement components needed for trouble-free and accurate installation
Uniform wall sections and smooth coolant-flow cavities for efficient operation
Cast-iron or aluminum design, depending on vehicle application

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$4.99

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
Validated for fit, form, and function

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$95.99

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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$15.49

Ideal replacement – this engine coolant thermostat housing directly replaces the original housing on specified vehicle years, makes and models
Durable construction – this part is specifically designed to withstand extreme temperature changes and resist cracking and leaking
Cost-effective and reliable – offers original manufacturer quality at lower cost than getting replacement at dealer
Industry-leading design – professionally engineered by the aftermarket leader in replacement thermostat housings

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$26.99

Don’t miss a detail with a new water neck from TSP. Composed of high-quality aluminum, they are available for multiple applications in both polished and black finishes. This water neck comes with bolts for easier installation.

Product Features:

Material: Aluminum
Finish: Chrome
Style: 45
Sealing Style: O-ring (Not Included)
Heater Bypass Provision: No
Hardware: Included

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$35.99

Ideal replacement – this engine coolant thermostat housing directly replaces the original housing on specified vehicle years, makes and models
Durable construction – this part is specifically designed to withstand extreme temperature changes and resist cracking and leaking
Cost-effective and reliable – offers original manufacturer quality at lower cost than getting replacement at dealer
Industry-leading design – professionally engineered by the aftermarket leader in replacement thermostat housings

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$64.99

Mr. Gasket Swivel Water Necks are great for engine conversion applications where engine/radiator inlet and outlet ports may be in different locations versus original equipment. The outlet rotates 360 degrees and has a 30 degree angle for versatility. Die-cast aluminum construction is strong, and durably resisting corrosion and is chrome plated for classic looks. It has a thick mounting flange to prevent warping and provide a positive engine coolant seal. Included stainless steel Allen head cap screws mount flush with the top of the flange to provide a smooth, custom look. Designed for use with 1/2 inch radiator hoses.

Product Features:

Neck rotates 360 degrees 30 degree angle for maximum versatility in engine swaps
Die-cast aluminum for strength and durability and resist corrosion
Thick mounting flange prevents warping and provides a positive coolant seal
Chrome-plated for looks
Allen head stainless steel bolt mount flush to flange for custom look
Uses commonly available 1-1/2 radiator hose (casting I.D 1-3/16″)

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$24.99

Carquest Premium Thermostat Housings are manufactured with OEM quality materials and safety standards by an OE Supplier. This housing 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. The construction of this housing is improved over the OE design to fix and update any issues that the OE design may have had.

Product Features:

Easy, one step fit and installation
No special tools required
Meets or exceeds all OEM standards

Popular 2003 Chevrolet Trailblazer Engine Cooling Parts Categories

Radiators

Water Pumps

Engine Cooling Fan Controllers

Radiator Fan Clutch

Thermostats

Radiator Fan Motors

Thermostat and Water Outlet Assemblies

Coolant Reservoirs

Coolant Temperature Sensors

Coolant Reservoir Caps

Water Outlets

Radiator Fan Control Relays

Engine Coolant Thermostat O-Rings

Thermostat Housing Gaskets

Thermostat Housings

Engine Cooling Fan Shrouds

Water Pump Gaskets

Coolant Fan Motor Connectors

Coolant Level Sensors

Radiator Cap Adapters

Engine Water Pump with Fan Clutch

Best-Selling 2003 Chevrolet Trailblazer Water Pump Gaskets

Upgrade your Trailblazer with one of our 3 best-selling Water Pump Gaskets, earning an average 4.75 stars rating across 12 reviews.

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$7.99

MAHLE® gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.

Product Features:

All MAHLE gaskets meet or exceed the original equipment specifications providing the finest sealing products available
MAHLE gaskets utilizes OE equivalent or better materials in all our gaskets
MAHLE gaskets is the leader in Domestic, Asian and European applications
The contents of MAHLE gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package

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$5.79

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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$6.99

With Victor Reinz gaskets, you can be sure you are getting sealing solutions that deliver OE quality gasket technology and engineering. That is because Victor Reinz is an original equipment supplier and the trusted choice of manufacturers the world over, offering broad coverage for foreign and domestic cars and trucks. In Victor Reinz gasket sets, you get the right combination of components needed for fast, long-lasting repairs.

Product Features:

Choosing Victor Reinz assures getting OE quality parts in gaskets sets that have the coverage, contents, packaging and electronic cataloging to best meet the needs of the aftermarket.

Top-Quality Thermostats for 2003 Chevrolet Trailblazers

Choose a high-quality OEM or aftermarket Thermostat for Chevrolet Trailblazers and enjoy top-notch performance from $68.99.

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from

$68.99

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

Top Picks for 2003 Chevrolet Trailblazer Water Pumps

Invest in one of our 3 durable Water Pumps for your 2003 Chevrolet, knowing you’re getting trusted brands and expert craftsmanship.

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$71.99

This premium water pump uses new high-quality components and is designed to meet or exceed OE specifications. This pump is 100% tested to ensure quality. Bearings, gaskets, seals, impeller, hub and housing are all designed for long-lasting service life. All necessary gaskets and seals are included.

Product Features:

Built to meet or exceed OE fit, form and function
All components necessary for installation are supplied with pump
100% tested for reliable performance
Follow all enclosed instructions to maximize pump life and validate warranty
Additional Notes: Includes gasket

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$55.99

Driveworks Remanufactured Water Pumps offer a complete replacement part solution, with application coverage spanning from antique to present-day vehicles. All units are 100% tested and engineered to meet or exceed O.E.M. performance, providing you a quality product you and your vehicle can rely on.

Product Features:

100% leak tested and hub-pull tested to promote a long, trouble-free performance life
Designed and manufactured with new, high-quality unitized seals from OE suppliers to ensure long, trouble-free performance
Each unit uses the proper bearing design as specified by the OE manufacturer to meet the specific radial torque and axial load requirements of each application to promote long bearing life and trouble-free performance
Supplied with high-quality mounting gasket and other seals/gaskets as applicable per application to help complete the job
Manufactured to original casting specifications to ensure a proper fit and proper water flow for efficient cooling

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$133.99

All Makes water pumps fit GM vehicles as well as a wide range of non-GM vehicles
Thoroughly tested for reliable, leak-free performance
Coated seals support seal longevity and durability
Heat-treated shaft assemblies provide superior strength and durability over non-treated assemblies
High-quality bearings are permanently sealed and lubricated for greater durability and long life
Come with premium, high-quality replacement components needed for trouble-free and accurate installation
Uniform wall sections and smooth coolant-flow cavities for efficient operation
Cast-iron or aluminum design, depending on vehicle application

Top-Rated Thermostat and Water Outlet Assemblies for 2003 Chevrolet Trailblazers

Make a smart move for your 2003 Chevrolet Trailblazer with products all priced from $39.49 to $53.99.

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from

$39.49

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

from

$53.99

Ideal replacement – this engine coolant thermostat housing directly replaces the original housing on specified vehicle years, makes and models
Durable construction – this part is specifically designed to withstand extreme temperature changes and resist cracking and leaking
Cost-effective and reliable – offers original manufacturer quality at lower cost than getting replacement at dealer
Industry-leading design – professionally engineered by the aftermarket leader in replacement thermostat housings

from

$39.99

Ideal replacement – this engine coolant thermostat housing directly replaces the original housing on specified vehicle years, makes and models
Durable construction – this part is specifically designed to withstand extreme temperature changes and resist cracking and leaking
Cost-effective and reliable – offers original manufacturer quality at lower cost than getting replacement at dealer
Industry-leading design – professionally engineered by the aftermarket leader in replacement thermostat housings

Top-Rated Engine Cooling Part Brands For Your 2003 Chevrolet Trailblazer

When it comes to finding the perfect Engine Cooling Part for your 2003 Chevrolet Trailblazer, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 11 trusted brands. We carry the most popular Engine Cooling Part brands including Felpro, Carquest Premium, and Dorman, and more, all known for their exceptional customer ratings (average brand rating of 4.6 stars) and competitive prices, as low as $4.99. Purchasing a Engine Cooling Part from us here at Advance Auto Parts is a smart move for both you and your 2003 Chevrolet Trailblazer, providing peace of mind with parts that meet or exceed OEM standards.

Popular Felpro 2003 Chevrolet Trailblazer Engine Cooling Parts

If you’re looking for a top-quality Engine Cooling Part for your 2003 Chevrolet Trailblazer, Advance Auto Parts has exactly what you need with our selection of Felpro Engine Cooling Parts. We have 2 Felpro Engine Cooling Parts in stock for this fitment, all known for their durability and precision fit. With prices starting at just $4.99 and an average cost of $5.39, you’ll find the perfect Engine Cooling Part for your needs and budget. Felpro Engine Cooling Parts for the 2003 Chevrolet Trailblazer come highly rated, with over 31 customer reviews and an impressive average rating of 4.6 stars. Choosing a Felpro Engine Cooling Part from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.

from $4.99

(20)

Engine Coolant Thermostat Gasket

“No leaks!”

from $5.79

(11)

Engine Water Pump Gasket

“Very good”

Top-Quality Carquest Premium 2003 Chevrolet Trailblazer Engine Cooling Parts

For those in search of a high-quality Engine Cooling Part for their 2003 Chevrolet Trailblazer, Advance Auto Parts offers a great selection of Carquest Premium Engine Cooling Parts. With 3 Carquest Premium Engine Cooling Parts in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Engine Cooling Parts start at just $15.99, with an average price of $42.49, giving you a range of options to suit your budget. Backed by over 346 customer ratings and an average rating of 4.4 stars, Carquest Premium Engine Cooling Parts provide both reliability and excellent performance. Choosing a Carquest Premium Engine Cooling Part from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.

from $15.99

(59)

Radiator Cap: 15 PSI

“Just what I needed”

from $71.99

(178)

Engine Water Pump: New, Gasket/Seals Included

“Was exactly same as factory”

from $39.49

(109)

Integrated Thermostat Housing: With Seal, 192 Degrees

“If you have a 2008 trailblazer and your AC doesnt work, try this part. My AC wasnt working for the longest time tried changing the temp sensor and tha”

FAQs for 2003 Chevrolet Trailblazer Engine Cooling Parts

What are the best-selling Engine Cooling Parts for 2003 Chevrolet Trailblazers?

Out of 37 Engine Cooling Parts that fit 2003 Chevrolet Trailblazers, the following parts are the top sellers:

Radiator: With Transmission Oil Cooler (19920482) – $209.99
Adjustable Thermostatic Fan Control (6016936) – $23.99
Electric Fan, 12" Diameter (6016901) – $108.99

What’s the price range for 2003 Chevrolet Trailblazer Engine Cooling Parts?

The prices of Engine Cooling Parts for the 2003 Chevrolet Trailblazer range from $4.99 up to $278.99 for the most premium parts.

What is the average price of an Engine Cooling Part for a 2003 Chevrolet Trailblazer?

The average price for Engine Cooling Parts for the 2003 Chevrolet Trailblazer is $68.65. Keep in mind the variety of part types within our Engine Cooling Part category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Engine Cooling Parts for other Chevrolet Trailblazer model years?

Yes, we carry Engine Cooling Parts for 12 model years of Chevrolet Trailblazers between 2002 and 2026. The following model years are the most popular for Engine Cooling Part purchases: 2023, 2022, 2021, 2009, 2008, 2007, 2006, 2005, and 2004.

What are the cheapest Engine Cooling Parts for my 2003 Chevrolet Trailblazer?

The cheapest 2003 Chevrolet Trailblazer Engine Cooling Parts we carry are:

Engine Coolant Thermostat Gasket (15780471) – $4.99
Engine Water Pump Gasket (20688649) – $5.79
Engine Water Pump Gasket (12547238) – $6.99
Water Pump Gasket (11157593) – $7.99
Engine Coolant Reservoir Cap: Twist, Plastic, 1 Pack (9110055) – $12.99

Does Advance Auto Parts sell Engine Cooling Parts for any other 2003 Chevrolet models?

Yes. We stock Engine Cooling Parts for 32 other popular 2003 Chevrolet models. Some of the most popular are 2003 Tahoe Engine Cooling Parts, 2003 Impala Engine Cooling Parts, 2003 Silverado 1500 Engine Cooling Parts, 2003 Malibu Engine Cooling Parts, and 2003 Suburban 1500 Engine Cooling Parts.

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

Based on 1,210 reviews by customers, our 2003 Chevrolet Trailblazer Engine Cooling Parts have an average customer rating of 4 stars. These are the highest-rated categories of Engine Cooling Parts for the 2003 Chevrolet Trailblazer and their top-rated products:

Water Pump Gaskets
- Water Pump Gasket (11157593) – $7.99
- Engine Water Pump Gasket (20688649) – $5.79
Coolant Reservoirs
- Non-Pressurized Coolant Reservoir: White, Plastic, Original Equipment Replacement (10528825) – $51.99

What types of Engine Cooling Parts do you sell for my 2003 Chevrolet Trailblazer?

As of 3/1/26, these are some of the most in-demand types of Engine Cooling Parts for a 2003 Chevrolet Trailblazer:

Can I get help with 2003 Chevrolet Trailblazer Engine Cooling Part orders?

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

What is your return policy for Chevrolet Trailblazer Engine Cooling Parts?

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

2003 Chevrolet Trailblazer Engine Cooling Parts

Carquest Premium – Radiator: With Transmission Oil Cooler (Part No.432403)

Carquest Premium – Engine Coolant Level Sensor (Part No.SBA3711)

Carquest Premium – Radiator Cap: 20 PSI (Part No.10271)

Carquest Premium – Integrated Thermostat Housing: With Seal, 180 Degrees (Part No.413-180)

Victor Reinz – Engine Coolant Thermostat Housing Gasket (Part No.71-14094-00)

Carquest Premium – Engine Coolant Water Outlet (Part No.85083)

GM Genuine Parts – Multi-Purpose Relay (Part No.15016745)

ACDelco – Engine Coolant Temperature Sensor (Part No.213-4514)

Carquest Premium – Multi-Use Connector (Part No.PTA1167)

Dorman – Electronic Radiator Fan Clutch (Part No.622-001)

KAI – Cooling Fan Shroud (Part No.GM3110151)

Imperial – Electric Fan, 14" Diameter (Part No.226114)

US MOTOR WORKS – Water Pump with Fan Clutch (Part No.MCK2001)

Felpro – Engine Water Pump Gasket (Part No.35635)

Imperial – Adjustable Thermostatic Fan Control (Part No.226204)

Imperial – Adjustable Thermostatic Fan Control (Part No.226203)

Dorman – Non-Pressurized Coolant Reservoir: White, Plastic, Original Equipment Replacement (Part No.603-126)

Motorad – Engine Coolant Control Valve: Includes Thermostat, Housing, Sensor and Seal (Part No.TA9252)

Dorman – Thermostat Assembly: Includes Housing, Thermostat, and O-Ring, 180 Degrees (Part No.902-2131)

Driveworks Water Pumps – Engine Water Pump (Part No.58-562)

ACDelco – Water Pump Kit (Part No.252-822)

Felpro – Engine Coolant Thermostat Gasket (Part No.35632)

Carquest Premium – Radiator Cap Tester Adapter (Part No.12033)

Dorman – Coolant Housing/Water Outlet: with Housing, 25 Degree Neck Angle (Part No.902-2081)

Top Street Performance – Chevrolet LSX 45 Degree Swivel Chrome Aluminum Water Neck (Part No.HC8937C)

Dorman – Coolant Housing/Water Outlet: with Housing, 30 Degree Neck Angle (Part No.902-836)

Mr. Gasket – Water Neck (Part No.2670)

Carquest Premium – Coolant Housing/Water Outlet: Includes Seal (Part No.CH5096)

Carquest Premium – Radiator: With Transmission Oil Cooler (Part No.432403)

MAHLE Original – Water Pump Gasket (Part No.K31757)

Felpro – Engine Water Pump Gasket (Part No.35704)

Victor Reinz – Engine Water Pump Gasket (Part No.71-14691-00)

Carquest Premium – Integrated Thermostat Housing: With Seal, 180 Degrees (Part No.413-180)

Carquest Premium – Engine Water Pump: New, Gasket/Seals Included (Part No.T1231)

Driveworks Water Pumps – Water Pump (Part No.58-588)

ACDelco – Water Pump Kit (Part No.252-822)

Carquest Premium – Integrated Thermostat Housing: With Seal, 192 Degrees (Part No.14659)

Dorman – Thermostat Assembly: Includes Housing, Thermostat, and O-Ring, 180 Degrees (Part No.902-2131)

Dorman – Thermostat Assembly: Includes Gasket, Thermostat, and Housing, 160 Degrees (Part No.902-2800)