2003 Chevrolet Express 2500 Engine Cooling Parts

Name: Integrated Thermostat Housing: With Seal, 187 Degrees
Brand: Carquest Premium
SKU: 14298
Price: 21.99 USD
Rating: 4.5 (173 reviews)

Please Select your Vehicle to See Exact Fit Parts

Keep Your 2003 Chevrolet Express 2500 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 Express 2500 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Thermostat and Water Outlet Assemblies, Water Pumps, 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 Felpro, Dorman, and Carquest Premium. For example, Felpro Engine Cooling Parts start at just $3.99 with an average 4.6 star rating. Dorman and Carquest Premium offer similar pricing and quality, backed by strong customer feedback. With over 14,170 reviews and a solid 4 star average, you can shop with confidence knowing other Chevrolet Express 2500 owners approve.

Competitive Prices and Extensive Inventory

The average price for a 2003 Chevrolet Express 2500 Engine Cooling Part at Advance Auto Parts is around $81.28, with a range that starts at $2.79 and goes up to $638.99. With 77 options in stock from 19 trusted brands, finding the right fit is easy. Popular picks like Standard Thermostat: With Seal, 187 Degrees, Engine Water Pump, and Engine Water Pump Gasket start at just $4.99 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 Express 2500 in peak condition, inside and out.

Looking for the perfect Engine Cooling Part for your 2003 Chevrolet Express 2500? 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 Express 2500. Whether you’re driving a 2003 model or another popular model year like 2015, 2016, 2017, 2018, 2019, 2020, 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 Express 2500 Engine Cooling Parts

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$21.99

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:

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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$22.99

This radiator mount bushing 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 radiator mount bushing matches the fit and function of the factory part on specified years, makes and models
Ideal solution – this bushing is a reliable replacement for an original part that 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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$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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$93.99

This replacement engine coolant pipe assembly is designed to match the fit and function of the original assembly on specified makes, years and models, and is engineered for reliable performance and durability.

Product Features:

Direct replacement – this replacement engine coolant pipe assembly is designed to match the fit and function of the original assembly on specified makes, years and models
Restores functionality – reliable replacement for an original part that is leaking, cracked or failed from corrosion 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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$8.49

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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$183.99

This engine cooling fan shroud, also known as an engine cooling fan cowl, is designed to match the fit of an original equipment cowl on specified vehicles. It is engineered to replace a cowl that is missing or damaged from impact, vibration, or heat.

Product Features:

Direct replacement – this engine cooling fan shroud, also known as an engine cooling fan cowl, is designed to match the fit and function of an original equipment cowl on specified vehicles
Ideal solution – engineered to replace a damaged or missing cowl to help ensure proper protection and cooling of the engine and underhood accessories
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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$40.99

Delphi’s history is one of OE heritage and quality. Our global technical requirements include design specifications and validation testing based on over 100 years of OE experience. Our material selections, material thickness, and material types are built from OE specifications to exceed aftermarket expectations. We put in place strict manufacturing processes to ensure quality control in every part we make. Delphi’s pioneering spirit delivers innovative solutions designed to support the aftermarket in servicing the vehicles of today, and tomorrow.

Product Features:

Delphi temperature sensors deliver accurate readings and optimal performance
Delphi’s 1 piece design and automated production process eliminates internal connectors and failure points
Each sensor is electrically insulated to eliminate interference from other components in the vehicle
Delphi temperature sensors are impervious to electrical noise and interference

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$118.99

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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$638.99

New Standard Replacement Radiator Support Assembly, With Sealed Beam Headlights

Product Features:

With Sealed Beam Headlights, Made Of Sheet molding composite
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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$14.99

Make better electrical repairs and accessory installations with a Dorman pigtail connector. This idle air control valve connector is designed to match performance of the original equipment connector on specified vehicles. Engineered for a clean appearance when installed, Dorman connectors are ideal for neatly securing wiring jobs in automotive, commercial, industrial and household applications. Our pigtails are constructed from quality materials for long service life and resistance to the elements, and offer a range of features including locking tabs, weatherproof seals and more, where applicable. Check the product details to choose the best product for your electrical wiring needs.

Product Features:

Direct replacement – this idle air control valve connector is designed to match performance of the original equipment connector on specified vehicles
Ensure fit – check the product details to choose the best product for your needs
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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$2.79

Constructed of quality materials, this multi-purpose retainer provides the same function and versatility as the original equipment retainer ensuring Length service life.

Product Features:

Ideal replacement – this retainer matches the fit and function of the original equipment retainer for this vehicle application
Quality material – this retainer is made of durable material for Length-lasting service
Versatile design – this retainer is suitable for a variety of automotive uses
Excellent value – this part offers original equipment quality at a competitive cost

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$6.79

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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$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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$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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$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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$54.99

High quality OE replacement part with all components needed to complete the job.

Product Features:

Meets and/or exceeds OEM standard
Includes quality gasket or O-ring to ensure proper seal (where applicable)
Includes quality gasket or O-ringá to ensure proper seal (where applicable)
Coated with corrosion and rust inhibitor
100% leak tested
Direct-fit replacement for ease of installation
Meets and/or exceeds OEM standard
Includes quality gasket or O-ring to ensure proper seal (where applicable)
Coated with corrosion and rust inhibitor
100% leak tested
Direct-fit replacement for ease of installation

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$3.29

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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$72.99

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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$22.99

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))
Coated with corrosion and rust inhibitor
100% leak tested
Direct-fit replacement for ease of installation
Meets and/or exceeds OEM standard
Includes quality gasket or O-ring to ensure proper seal (where applicable)
Coated with corrosion and rust inhibitor
100% leak tested
Direct-fit replacement for ease of installation

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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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$19.99

Product Features:

Ideal replacement – this coolant O-ring kit matches the factory O-rings to ensure a complete and reliable repair
Durable construction – made of quality materials for leak-free service
Complete solution – includes all O-rings required to repair or replace specified coolant pipe
Quality tested – this part has undergone try-on and material testing to ensure a quality fit and long service life

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$14.99

This engine water pump stud kit is designed to match the original hardware required to repair the water pump on specified vehicles. Made of quality components, this kit is engineered for reliable performance and durability.

Product Features:

Direct replacement – this engine water pump stud kit is designed to match the original hardware required to repair the water pump on specified vehicles
Ideal solution – this kit is a reliable replacement for original hardware that is missing or damaged
Durable construction – this kit is made from quality components to ensure reliable performance and a 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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$3.99

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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$31.99

New Platinum Pro Radiator Fan Blade

Product Features:

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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$70.99

Product Features:

Eliminates trapped air, hot spots, and overheating
Use w/ Stock Factory Style Intake Manifold and Stock Steam Cross-Over Tube
Includes Black Hose, 90 Degree Hose End, 1/8″ NPT Adapter & Clamp
Hose Length: 4 Feet of 1/4″ Hose – Can be Cut to Desired Length
Ideal for use with Holley LS Mid-Mount Accessory Drive Systems, but also works with many other LS engine conversions.

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$95.99

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:

Designed, tested, and built by application
OE performance, fit, and appearance
Precision machined
Out of box installation
Designed, tested, and built by application
OE performance, fit, and appearance
Precision machined
Out of box installation

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$49.99

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

Popular 2003 Chevrolet Express 2500 Engine Cooling Parts Categories

Radiators

Water Pumps

Engine Cooling Fan Controllers

Radiator Fan Clutch

Thermostats

Radiator Fan Motors

Thermostat and Water Outlet Assemblies

Engine Coolant Air Bleed Pipes

Coolant Reservoirs

Coolant Temperature Sensors

Coolant Reservoir Caps

Water Outlets

Engine Coolant Pipe O-Rings

Radiator Supports

Radiator Support Baffle Clips

OE Cooling Fan Blades

Water Pump Install. Kits

Engine Coolant Thermostat O-Rings

Radiator Fan Clutch Fan Blades

Thermostat Housings

Engine Cooling Fan Shrouds

Radiator Mounts

Water Pump Gaskets

Radiator Drain Plugs

Engine Water Pump Backing Plate Gaskets

Radiator Cap Adapters

Water Pump O-Rings

Engine Water Pump with Fan Clutch

Thermostat Shims

Engine Cooling Fan Clutch Switch Connector

Water Pump Pulley Bolts

Engine Coolant Crossover Pipe Kit

Most Popular Thermostat and Water Outlet Assemblies for 2003 Chevrolet Express 2500s

Enhance your 2003 Chevrolet Express 2500 with one of the 4 Thermostat and Water Outlet Assemblies we have in stock, starting at just $21.99.

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$21.99

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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$74.99

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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$65.99

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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$54.99

Includes quality gasket to ensure proper seal

Best-Selling 2003 Chevrolet Express 2500 Water Pumps

Upgrade your Express 2500 with one of our 7 best-selling Water Pumps, earning an average 4.5 stars rating across 1,025 reviews.

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$151.99

100% tested for reliable performance
Durable housing features precisely machined mounting surface for proper sealing and fitment
Equipped with weep chamber or similar feature to help prevent unnecessary replacement
Included heavy-duty unitized bearings, pressed-on hubs and optimal impeller clearance for a long-lasting water pump
All gaskets or seals necessary for water pump are included
This pump is driven by the accessory belt and we recommend replacement if nearing service recommendation
This pump is driven by the timing chain; see vehicle manufacturer recommendation for replacement of timing components
This pump is driven by the timing belt; see vehicle manufacturer recommendation for replacement of timing components
Additional Notes: Includes gasket

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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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$73.99

Built to meet or exceed OE fit, form and function
All components necessary for installation are supplied with pump
100% tested for reliable performance
Additional Notes: Includes gasket

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$59.99

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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$309.99

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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$153.99

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

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$188.99

Manufactured to meet or exceed OEM specifications.

Product Features:

100% factory tested for leakage and dimensional precision.
Bearing noise and durability-tested.
Designed to match OE coolant flow rate and pressure.
All required hardware included for easy installation.

Top-Quality Thermostats for 2003 Chevrolet Express 2500s

Choose a high-quality OEM or aftermarket Thermostat for Chevrolet Express 2500s and enjoy top-notch performance from $11.99.

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$17.99

Carquest Premium Thermostats are 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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$11.99

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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$58.99

Kit includes thermostat, housing, and all necessary seals/gaskets to do the complete job. These individual parts are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat and 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. 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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$18.29

This premium upgraded thermostat is everything you were looking for. UltraStat Thermostats are the toughest thermostats on the market. All heavy gauge stainless steel construction provides long-life durability, as well as complete corrosion resistance. Exclusive BLVT Valve technology minimizes thermal shock to cooling system components. This is the perfect upgrade to help insure your cooling system is working exactly as you need and expect it to for longevity.

Product Features:

Exclusive BLVT Valve Technology minimizes thermal shock to cooling system components
Heavy gauge stainless steel components offer increased reliability and long-lasting durability
Stainless steel thermal element for unmatched corrosion resistance and revolutionary REAX wax mixture provides quicker reaction time
AccuSpring Design for stable temperature control and increased cabin comfort

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$28.99

UltraStat Thermostats are the toughest thermostats on the market. All heavy gauge stainless steel construction provides long-life durability, as well as complete corrosion resitance. Exclusive BLVT Valve technology minimizes thermal shock to cooling system components.

Product Features:

Heavy gauge stainless steel components offer increased reliability and long-lasting durability
Exclusive BLVT Valve Technology minimizes thermal shock to cooling system components
Stainless steel thermal element for unmatched corrosion resistance and revolutionary REAX wax mixture provides quicker reaction time
AccuSpring Design for stable temperature control and increased cabin comfort

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$36.99

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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$37.99

Designed to open at 180 degrees every time, regardless of engine rpm, and it’s high-flow design and brass and copper construction eliminate the damaging effects of cycling when you’re stuck in stop-and-go traffic. It includes the rubber gasket and has a pressure relief valve.

Product Features:

Opens sooner than stock at 180 degrees
High flow design for performance applications
Includes rubber o-ring seal/gasket
Incorporates pressure relief valve

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$17.49

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

from

$41.99

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

$33.99

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 Picks for 2003 Chevrolet Express 2500 Water Pump Gaskets

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

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$4.99

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
Validated for fit, form, and function

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$7.49

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

from

$8.49

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

Top-Rated Radiators for 2003 Chevrolet Express 2500s

Make a smart move for your 2003 Chevrolet Express 2500 with products all priced from $237.99 to $352.99.

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$352.99

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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$286.99

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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$237.99

New Platinum Pro Radiator, 5.3 Liter V8 Engine, With Clamp On Style Hose Connections

Product Features:

5.3 Liter V8 Engine, With Clamp On Style Hose Connections, Made Of Plastic and Aluminum
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
Warranty: 5 Year, Limited
Radiator Cap Not Included
Check Out The Large Selection Of Parts Available For Your Vehicle

Top-Rated Engine Cooling Part Brands For Your 2003 Chevrolet Express 2500

When it comes to finding the perfect Engine Cooling Part for your 2003 Chevrolet Express 2500, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 19 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 $3.99. Purchasing a Engine Cooling Part from us here at Advance Auto Parts is a smart move for both you and your 2003 Chevrolet Express 2500, providing peace of mind with parts that meet or exceed OEM standards.

Popular Felpro 2003 Chevrolet Express 2500 Engine Cooling Parts

If you’re looking for a top-quality Engine Cooling Part for your 2003 Chevrolet Express 2500, Advance Auto Parts has exactly what you need with our selection of Felpro Engine Cooling Parts. We have 3 Felpro Engine Cooling Parts in stock for this fitment, all known for their durability and precision fit. With prices starting at just $3.99 and an average cost of $5.42, you’ll find the perfect Engine Cooling Part for your needs and budget. Felpro Engine Cooling Parts for the 2003 Chevrolet Express 2500 come highly rated, with over 33 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 $4.79

(18)

Multi-Purpose O-Ring

“Perfect fit, installed nicely.”

from $7.49

(9)

Engine Water Pump Gasket Kit

“OEM Quality, no rtv needed to make these work which makes it so much faster if you need to replace the water pump again in the future.”

from $3.99

(6)

Engine Water Pump Gasket

“Easy to order and friendly staff! A+++”

Top-Quality Carquest Premium 2003 Chevrolet Express 2500 Engine Cooling Parts

For those in search of a high-quality Engine Cooling Part for their 2003 Chevrolet Express 2500, 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 $11.99, with an average price of $60.66, giving you a range of options to suit your budget. Backed by over 799 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 $151.99

(371)

Engine Water Pump: New, Gasket/Seals Included

“this was one of the easys’t waterpumps i have ever installed”

from $17.99

(189)

Standard Thermostat: With Seal, 187 Degrees

“Good”

from $11.99

(239)

Standard Thermostat: With Seal, 195 Degrees

“Picked up in store in minutes. Was exactly what I needed.”

FAQs for 2003 Chevrolet Express 2500 Engine Cooling Parts

What are the best-selling Engine Cooling Parts for 2003 Chevrolet Express 2500s?

Out of 77 Engine Cooling Parts that fit 2003 Chevrolet Express 2500s, the following parts are the top sellers:

Standard Thermostat: With Seal, 187 Degrees (5650102) – $17.99
Engine Water Pump (20420611) – $104.99
Engine Water Pump Gasket (5180503) – $4.99

What’s the price range for 2003 Chevrolet Express 2500 Engine Cooling Parts?

The prices of Engine Cooling Parts for the 2003 Chevrolet Express 2500 range from $2.79 up to $638.99 for the most premium parts.

What is the average price of an Engine Cooling Part for a 2003 Chevrolet Express 2500?

The average price for Engine Cooling Parts for the 2003 Chevrolet Express 2500 is $81.28. 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 Express 2500 model years?

Yes, we carry Engine Cooling Parts for 29 model years of Chevrolet Express 2500s between 1996 and 2026. The following model years are the most popular for Engine Cooling Part purchases: 2023, 2022, 2021, 2020, 2019, 2018, 2017, 2016, and 2015.

What are the cheapest Engine Cooling Parts for my 2003 Chevrolet Express 2500?

The cheapest 2003 Chevrolet Express 2500 Engine Cooling Parts we carry are:

Nylon Shield Retainer (11224109) – $2.79
Multi-Purpose O-Ring (15780472) – $3.29
Engine Water Pump Gasket (3205096) – $3.99
Multi-Purpose O-Ring (15780969) – $4.79
Engine Water Pump Gasket (5180503) – $4.99

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 Express 2500?

The one 2003 Chevrolet Express 2500 Engine Cooling Part we have in stock is the Nylon Shield Retainer. It costs $2.79.

What types of Engine Cooling Parts do you sell for my 2003 Chevrolet Express 2500?

As of 3/1/26, these are some of the most in-demand types of Engine Cooling Parts for a 2003 Chevrolet Express 2500:

Can I get help with 2003 Chevrolet Express 2500 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 Express 2500 Engine Cooling Parts?

Advance Auto Parts keeps returns simple. For new Chevrolet Express 2500 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 Express 2500 Engine Cooling Parts

Carquest Premium – Integrated Thermostat Housing: With Seal, 187 Degrees (Part No.14298)

Dorman – Radiator Mount Bushing (Part No.926-276)

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

Dorman – Engine Heater Hose Assembly (Part No.626-591)

Dorman – Help – Radiator Drain Cocks (Part No.61109)

Dorman – Clutch Fan Shroud (Part No.620-994)

Delphi – Engine Coolant Temperature Sensor (Part No.TS10076)

US MOTOR WORKS – Water Pump with Fan Clutch (Part No.MCK1041)

KAI – Radiator Support (Part No.GM1225217)

Dorman – Multi-Purpose Pigtail Connector (Part No.85137)

Dorman – Nylon Shield Retainer (Part No.963-230)

Carquest Premium – Radiator Cap: 18 PSI (Part No.10234)

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

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

Felpro – Engine Water Pump Gasket Kit (Part No.ES 73010)

Carquest Premium – Engine Coolant Thermostat Housing (Part No.85254)

Felpro – Engine Water Pump Gasket (Part No.35756)

Dorman – Non-Pressurized Coolant Reservoir: White, Plastic, Original Equipment Replacement (Part No.603-078)

Carquest Premium – Coolant Housing/Water Outlet: Gasket Included (Part No.85169)

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

Dorman – Coolant Bypass Tube O-Ring Kit (Part No.926-424)

Dorman – Water Pump Mounting Hardware Kit (Part No.902-804)

Felpro – Engine Water Pump Gasket (Part No.13032)

KAI – Cooling Fan Blade (Part No.GM3112109)

Holley – LS Steam Tube Kit with Black Push-On Hose (Part No.26-552)

Carquest Premium – Engine Cooling Fan Clutch: Reverse Rotation Severe Duty Thermal Clutch (Part No.215158)

Carquest Premium – Engine Water Pump: New, Gasket/Seals Included (Part No.T3114)

Carquest Premium – Integrated Thermostat Housing: With Seal, 187 Degrees (Part No.14298)

Dorman – Thermostat Assembly: Includes Housing (Part No.902-2836)

Dorman – Thermostat Assembly: Includes Housing and O-Ring, 160 Degrees (Part No.902-2701)

Factory Air – Water Outlet with Thermostat (Part No.85580)

Carquest Premium – Engine Water Pump: New, Gasket/Seals Included (Part No.T7052)

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

Carquest Premium – Engine Water Pump_New (Part No.T3131)

Driveworks Water Pumps – New Water Pump (Part No.58-521)

ACDelco – Water Pump Kit (Part No.252-845)

ACDelco – Water Pump Kit (Part No.252-711)

Carquest Premium – Engine Water Pump with Thermostat and Housing (Part No.T7181)

Carquest Premium – Standard Thermostat: With Seal, 187 Degrees (Part No.14948)

Carquest Premium – Standard Thermostat: With Seal, 195 Degrees (Part No.14119)

Motorad – Engine Coolant Thermostat Housing Assembly Thermostat: With Inlet, With Seal, 187 Degrees (Part No.524KT)

Motorad UltraStats – UltraStat Thermostat: With Seal, 195 Degrees (Part No.5265-195)

Motorad UltraStats – Thermostat: With Seal, 187 Degrees (Part No.5456-187)

Motorad – Engine Coolant Thermostat Housing Assembly Thermostat: With Gasket, With Seal, 195 Degrees (Part No.5170KT)

Mr. Gasket – Tstat (Part No.6368)

Motorad – Standard Thermostat: With Seal, 187 Degrees (Part No.524-190)

Dorman – Thermostat Assembly: Includes Housing, Thermostat, and O-Ring, 180 Degrees (Part No.902-2700)

Dorman – Thermostat Assembly: Includes Housing, Thermostat, and Gasket, 186 Degrees (Part No.902-700)

Felpro – Engine Water Pump Gasket (Part No.5152)

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

Felpro – Engine Water Pump Gasket Kit (Part No.ES 73030)

Carquest Premium – Radiator (Part No.433830)

Carquest Premium – Radiator (Part No.438065)

KAI – Radiator (Part No.RAD2712)