2003 Chevrolet Corvette Engine Cooling Parts

Keep Your 2003 Chevrolet Corvette 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 Corvette looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Thermostats, Water Pumps, and Thermostat and Water Outlet Gaskets. 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, FELPRO, and ACDelco. For example, Carquest Premium Engine Cooling Parts start at just $17.99 with an average 4.4 star rating. FELPRO and ACDelco offer similar pricing and quality, backed by strong customer feedback. With over 1,286 reviews and a solid 4 star average, you can shop with confidence knowing other Chevrolet Corvette owners approve.

Competitive Prices and Extensive Inventory

The average price for a 2003 Chevrolet Corvette Engine Cooling Part at Advance Auto Parts is around $73.68, with a range that starts at $4.79 and goes up to $494.99. With 43 options in stock from 14 trusted brands, finding the right fit is easy. Popular picks like Engine Water Pump Gasket, Coolant Temperature Sensor 1TS1001, and Thermostat: With Seal, 187 Degrees start at just $7.49 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 Corvette in peak condition, inside and out.

Essential 2003 Chevrolet Corvette Engine Cooling Parts

Dorman – Engine Coolant Crossover Kit (Part No.626-544)

Engine Coolant Crossover Kit

from

$94.99
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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Felpro – Engine Water Pump Gasket Kit (Part No.ES 73037)

Engine Water Pump Gasket Kit

from

$3.99
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 for the sealing repair environment
  • Validated for fit, form and function
  • Unsurpassed quality you can trust
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Carquest Premium – Engine Cooling Fan Module (Part No.ACC1313)

Engine Cooling Fan Module

from

$99.99
All modern vehicles consist of several independent operating systems controlled by a main system processor with independent sub-processors. The sub-processors provide class 2 serial information data to the main processor while handling the operation of the system and carry the circuit load to protect the main operating system. When replacing any level processor programming may be needed to enter the unit into the vehicles main operating system.

Product Features:
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
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Dorman – Help – Engine Coolant Reservoir Cap: Twist, Plastic, 1 Pack (Part No.54218)

Engine Coolant Reservoir Cap: Twist, Plastic, 1 Pack

from

$17.99
Cracked or lost the original engine coolant reservoir cap? Replace it seamlessly and effectively with this precisely engineered, direct replacement cap.

Product Features:
  • Direct replacement – this engine coolant reservoir cap directly replaces a cracked or lost original cap
  • Application specific – made to match dimensions of reservoir cap on only certain vehicle years, makes and models
  • Seamless fit – reverse-engineered from the original equipment to fit perfectly
  • Excellent value – a quick, easy replacement that’s less expensive than going back to the dealership
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Dorman – Thermostat Assembly: Includes Housing, Thermostat, and Gasket, 186 Degrees (Part No.902-700)

Thermostat Assembly: Includes Housing, Thermostat, and Gasket, 186 Degrees

from

$33.99
This replacement engine coolant thermostat housing assembly is engineered to match the fit and durability of the stock housing assembly on specified vehicles. It is designed to withstand extreme temperature changes to extend service life.

Product Features:
  • Ideal replacement – this engine coolant thermostat housing assembly directly replaces the original water outlet 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 housing assemblies
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Carquest Premium – Standard Thermostat: With Seal, 180 Degrees (Part No.14218)

Standard Thermostat: With Seal, 180 Degrees

from

$16.99
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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Mr. Gasket – Water Outlet Gasket (Part No.740)

Water Outlet Gasket

from

$6.99
Manufactured from a blend of nitrile rubber and fiber for excellent sealing and durability. Precision die cut for application.

Product Features:
  • This gasket is bulk packaged
  • Made from Cellulose/Nitrile Composition
  • Provides Excellent Sealing and Durability
  • These Gaskets are Die Cut for a Precision Fit
  • Fits Small Block Chevy V8 Engines 1955-’90
  • Fits Big Block Chevy V8 Engines 1965-’90
  • Fits Small Block Chrysler 318/360 1979-’92
  • Fits Small Block Chysler 3.9L/5.2L/5.9L Magnum 1992-’03
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Dorman – Radiator Fan Assembly: Dual, Cost Effective and Reliable (Part No.620-634)

Radiator Fan Assembly: Dual, Cost Effective and Reliable

from

$309.99
This engine cooling fan assembly is precision-engineered to match the fit and performance of the stock radiator fan on specific vehicle years, makes and models. It has been rigorously tested to ensure it cools as effectively as the original part.

Product Features:
  • Ideal replacement – this engine cooling fan assembly was precision-engineered to match the fit and performance of the stock radiator fan assembly on specific vehicles
  • Complete package – assembly is designed with the same materials and components as the original part
  • Quality assured – motors are tested in laboratory settings to ensure performance
  • Cost effective and reliable – trustworthy manufacturing for far less than same part at the dealership
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Carquest – A/C Compressor Connector (Part No.PT770)

A/C Compressor Connector

from

$16.05
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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Edelbrock – Billet pulley for LS water pumps No. 8893 & No. 8894 (Part No.8899)

Billet pulley for LS water pumps No. 8893 & No. 8894

from

$185.99
The 8899 pulley is a bolt-on, billet pulley designed for Edelbrock high-performance street, heavy duty aluminum water pumps No. 8893 & No. 8894 for GM LS cars (except Cadillac CTS-V). This pulley is designed to work with all OEM accessories and pulleys when used with Edelbrock water pumps.
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Carquest Premium – Engine Coolant Temperature Switch (Part No.WTA1246)

Engine Coolant Temperature Switch

from

$22.79
Carquest Premium coolant temperature sensors and switches are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry, Carquest Premium coolant temperature sensors and switches undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium coolant temperature sensors and switches are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:
  • Designed to meet or exceed OE specifications for fit, form and function
  • 100% factory resistance calibrated to ensure extremely accurate temperature readings for optimal performance
  • O-rings, seals or thread sealant are included if required
  • Wires, clips and probe length match OE (where applicable)
  • Weather-tight connectors prevent leaks and corrosion for longer life
  • Extensive design validation testing and 100% end-of-line tested
  • Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
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ACDelco – Engine Coolant Temperature Sensor (Part No.213-4514)

Engine Coolant Temperature Sensor

from

$38.99
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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Mr. Gasket – Waterpmpgasket (Part No.71G)

Waterpmpgasket

from

$7.99
Manufactured from a blend of nitrile rubber and celulose fiber for excellent sealing and durability. Precision die cut for excellent sealing and durability.

Product Features:
  • For OE replacement use
  • High performance street drag race oval track use
  • For High Performance Street/Drag/Oval Track Racing
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Felpro – Engine Water Pump Gasket (Part No.30060)

Engine Water Pump Gasket

from

$2.29
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
See More

Carquest Premium – Radiator (Part No.433717)

Radiator

from

$524.99
Carquest Premium radiators are designed and engineered for maximum performance, using the highest-grade materials to ensure all radiators meet or exceed original equipment (O.E.) fit, form and function. Carquest Premium radiators are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Most modern vehicles use radiators with plastic tanks and our parts are engineered with integrated ribbing to prevent damage during thermal cycling. Carquest Premium radiators are also 100% tested to ensure a durable, leak-free cooling system repair.

Product Features:
  • Thermal tested under real-life temperature simulations
  • High tensile strength aluminum for maximum crimp strength
  • Plastic tanks are engineeredáwith integrated ribbingáfor addedástrength to withstand cracks, bowing and distortion during thermal cycles
  • Thermal expansion slots extend core life and reduce failure rates by allowing improved core expansion and contraction during systematic heat cycles
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Carquest Premium – Radiator (Part No.813462)

Radiator

from

$235.99
Carquest Premium radiators are designed and engineered for maximum performance, using the highest-grade materials to ensure all radiators meet or exceed original equipment (O.E.) fit, form and function. Carquest Premium radiators are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Most modern vehicles use radiators with plastic tanks and our parts are engineered with integrated ribbing to prevent damage during thermal cycling. Carquest Premium radiators are also 100% tested to ensure a durable, leak-free cooling system repair.

Product Features:
  • Thermal tested under real-life temperature simulations
  • High tensile strength aluminum for maximum crimp strength
  • Plastic tanks are engineeredáwith integrated ribbingáfor addedástrength to withstand cracks, bowing and distortion during thermal cycles
  • Thermal expansion slots extend core life and reduce failure rates by allowing improved core expansion and contraction during systematic heat cycles
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Dorman – Pressurized Coolant Reservoir: Black and White, Plastic, Original Equipment Replacement (Part No.603-140)

Pressurized Coolant Reservoir: Black and White, Plastic, Original Equipment Replacement

from

$117.99
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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Dorman – Help – Radiator Drain Cocks (Part No.61136)

Radiator Drain Cocks

from

$5.49
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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Dorman – Help – Radiator Drain Cocks (Part No.61122)

Radiator Drain Cocks

from

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

Product Features:
  • Direct replacement – this radiator drain petcock matches the fit and function of the original equipment part
  • Durable construction – this part is made of quality materials for a long service life
  • Saves money – offers original equipment quality at a competitive price
  • Quality assured – this petcock has undergone virtual testing to assure proper fit and function
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Felpro – Engine Water Pump Gasket Kit (Part No.ES 73010)

Engine Water Pump Gasket Kit

from

$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
See More

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

Engine Water Pump Gasket Kit

from

$8.49
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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Carquest Premium – Radiator Cap Tester Adapter (Part No.12552)

Radiator Cap Tester Adapter

from

$14.99
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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Carquest Premium – Radiator Cap Tester Adapter (Part No.12033)

Radiator Cap Tester Adapter

from

$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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Weiand – Action Plus Water Pumps (Part No.9208P)

Action Plus Water Pumps

from

$249.99
Weiand’s light weight, performance aluminum mechanical Action-Plus water pumps give a weight saving of 30 percent to 50 percent over stock cast-iron pumps. These pumps feature a premium quality bearing and seal that have twice the load capacity of stock pumps. Weiand’s exclusive housing counter bore keeps the bearing form walking out. All pumps are designed with the necessary bracket bosses and water connections to fit popular street applications.

Product Features:
  • Twisted Snout Water Pump Design For Updated Style
  • Street Performance
  • Heavy Duty Shaft w/5/8 in. Pilot
  • Six-Blade Stamped Steel
  • Anti-Cavitation Impeller
  • 100 Percent Leak Tested
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Carquest Premium – Engine Water Pump: New, Gasket/Seals Included (Part No.T5051)

Engine Water Pump: New, Gasket/Seals Included

from

$73.99
Carquest Premium drive motor inverter cooler water pumps are 100% new, high-quality parts that meet or exceed original equipment (O.E.) specifications. All components, including the housing, impeller, controller, gaskets, and seals are designed for long-lasting service life. These electric water pumps are supplied with the gaskets or seals necessary for installation. Our Carquest Premium auxiliary water pumps undergo stringent testing to ensure superior performance that we stand behind with an industry-leading warranty.

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
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Mr. Gasket – Water Neck (Part No.2557)

Water Neck

from

$31.99
Precision die cast, these water necks are first polished to a high luster, then chrome plated. Features an O-ring style seal to prevent water leaks. Comes with O-ring gasket and mounting bolts.

Product Features:
  • Complete with o-rings and mounting bolts
  • Features an o-ring style seal to prevent water leaks
  • Chrome plated
  • 1/2″ NPT port can be used for various coolant temp related sensors or switches
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Dorman – Coolant Housing/Water Outlet: with Housing and Gasket, 180 Degree Neck Angle (Part No.902-2005)

Coolant Housing/Water Outlet: with Housing and Gasket, 180 Degree Neck Angle

from

$29.99
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
See More

Mr. Gasket – Water Neck (Part No.2660)

Water Neck

from

$29.99
Precision die cast, these water necks are first polished to a high luster, then chrome plated. Features an O-ring style seal to prevent water leaks. Comes with O-ring gasket and mounting bolts.

Product Features:
  • Precision die-cast
  • Chrome plated for looks
  • O-ring seal to prevent water leaks
  • Mounting hardware included
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Most Popular Thermostats for 2003 Chevrolet Corvettes

Enhance your 2003 Chevrolet Corvette with one of the 4 Thermostats we have in stock, starting at just $17.49.

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

Standard Thermostat: With Seal, 187 Degrees

from

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

Thermostat: With Seal, 187 Degrees

from

$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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Mr. Gasket – Tstat (Part No.6368)

Tstat

from

$36.99
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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Motorad – Standard Thermostat: With Seal, 187 Degrees (Part No.524-190)

Standard Thermostat: With Seal, 187 Degrees

from

$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
See More

Best-Selling 2003 Chevrolet Corvette Water Pumps

Upgrade your Corvette with one of our 2 best-selling Water Pumps, earning an average 4 stars rating across 20 reviews.

Carquest Premium – Engine Water Pump: New, Gasket/Seals Included (Part No.T7049)

Engine Water Pump: New, Gasket/Seals Included

from

$179.99
Carquest Premium water pumps are 100% new, high-quality parts that meet or exceed original equipment (O.E.) specifications. All components, including the housing, hub, bearings, gaskets and seals are designed for long-lasting service life. These water pumps are supplied with the gaskets or seals necessary for installation. Our Carquest Premium water pumps undergo stringent testing to ensure superior performance that we stand behind with an industry-leading warranty.

Product Features:
  • 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
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Edelbrock – Water Pump Two-piece for 1997-04 GM LS1/LS6 Gen III in Satin Finish (Part No.8896)

Water Pump Two-piece for 1997-04 GM LS1/LS6 Gen III in Satin Finish

from

$494.99
Edelbrock #8896 Water Pump GM gen III ls1 & gen iv ls engines insert style ideal to prevent overheating in street rods and street machines, as well as in tow rigs and motorhomes. Using state-of-the-art racing technology, Edelbrock has designed these “supe

Product Features:
  • Standard Impeller Rotation
  • 0.750 in. Pilot Shaft
  • 0.750 in. Ball/Ball Bearing
  • 6.00 in. Block To Hub Height
  • Satin Finish
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Top-Quality Thermostat and Water Outlet Gaskets for 2003 Chevrolet Corvettes

Choose a high-quality OEM or aftermarket Thermostat and Water Outlet Gasket for Chevrolet Corvettes and enjoy top-notch performance from $4.79.

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

Engine Coolant Thermostat Gasket

from

$4.79
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design to ensure a perfect fit
  • Engineered and manufactured specifically for the repair environment
  • Unsurpassed quality you can trust
  • Validated for fit, form, and function
See More

Top Picks for 2003 Chevrolet Corvette Radiators

Invest in one of our 2 durable Radiators for your 2003 Chevrolet, knowing you’re getting trusted brands and expert craftsmanship.

Carquest Premium – Radiator: With Transmission Oil Cooler (Part No.432360)

Radiator: With Transmission Oil Cooler

from

$269.99
Carquest Premium radiators are designed and engineered for maximum performance, using the highest-grade materials to ensure all radiators meet or exceed original equipment (O.E.) fit, form and function. Carquest Premium radiators are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Most modern vehicles use radiators with plastic tanks and our parts are engineered with integrated ribbing to prevent damage during thermal cycling. Carquest Premium radiators are also 100% tested to ensure a durable, leak-free cooling system repair.

Product Features:
  • Thermal tested under real-life temperature simulations
  • High tensile strength aluminum for maximum crimp strength
  • Plastic tanks are engineeredáwith integrated ribbingáfor addedástrength to withstand cracks, bowing and distortion during thermal cycles
  • Thermal expansion slots extend core life and reduce failure rates by allowing improved core expansion and contraction during systematic heat cycles
See More

Carquest Premium – Radiator: With Transmission Oil Cooler (Part No.438098)

Radiator: With Transmission Oil Cooler

from

$287.99
Carquest Premium radiators are designed and engineered for maximum performance, using the highest-grade materials to ensure all radiators meet or exceed original equipment (O.E.) fit, form and function. Carquest Premium radiators are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Most modern vehicles use radiators with plastic tanks and our parts are engineered with integrated ribbing to prevent damage during thermal cycling. Carquest Premium radiators are also 100% tested to ensure a durable, leak-free cooling system repair.

Product Features:
  • Thermal tested under real-life temperature simulations
  • High tensile strength aluminum for maximum crimp strength
  • Plastic tanks are engineeredáwith integrated ribbingáfor addedástrength to withstand cracks, bowing and distortion during thermal cycles
  • Thermal expansion slots extend core life and reduce failure rates by allowing improved core expansion and contraction during systematic heat cycles
See More

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

Make a smart move for your 2003 Chevrolet Corvette with products all priced from $21.99 to $74.99.

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

Integrated Thermostat Housing: With Seal, 187 Degrees

from

$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
See More

GM Genuine Parts – Engine Coolant Thermostat Water Inlet Assembly (Part No.15-10412)

Engine Coolant Thermostat Water Inlet Assembly

from

$72.99
GM Genuine Parts Engine Coolant Thermostat / Water Inlet Assemblies are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These engine coolant thermostat / water inlet assemblies contain the engine thermostat and water inlet housing. The engine coolant thermostat controls the flow of coolant through the radiator; enabling the engine to reach and maintain its normal operating temperature. The water inlet housing connects the radiator hoses to the thermostat. For certain applications, the water inlet contains threaded holes or ports for sensors and switches. 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:
  • Provides a durable leak-resistant seal
  • Repairs leaking thermostat housings
  • Corrects engine overheating caused by failed thermostat
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • Original equipment parts are designed to work with your GM vehicle safety systems — aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type
  • GM regularly updates production and service part designs to integrate new materials and technologies
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Motorad – Engine Coolant Thermostat Housing Assembly Thermostat: With Inlet, With Seal, 187 Degrees (Part No.524KT)

Engine Coolant Thermostat Housing Assembly Thermostat: With Inlet, With Seal, 187 Degrees

from

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

Thermostat Assembly: Includes Housing, Thermostat, and O-Ring, 180 Degrees

from

$41.99
This replacement engine coolant thermostat housing assembly is engineered to match the fit and durability of the stock housing assembly on specified vehicles. It is designed to withstand extreme temperature changes to extend service life.

Product Features:
  • Ideal replacement – this engine coolant thermostat housing assembly directly replaces the original water outlet 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 housing assemblies
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Dorman – Thermostat Assembly: Includes Housing, Thermostat, and Gasket, 186 Degrees (Part No.902-700)

Thermostat Assembly: Includes Housing, Thermostat, and Gasket, 186 Degrees

from

$33.99
This replacement engine coolant thermostat housing assembly is engineered to match the fit and durability of the stock housing assembly on specified vehicles. It is designed to withstand extreme temperature changes to extend service life.

Product Features:
  • Ideal replacement – this engine coolant thermostat housing assembly directly replaces the original water outlet 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 housing assemblies
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Dorman – Thermostat Assembly: Includes Housing (Part No.902-2836)

Thermostat Assembly: Includes Housing

from

$74.99
This replacement engine coolant thermostat housing assembly is engineered to match the fit and durability of the stock housing assembly on specified vehicles. It is designed to withstand extreme temperature changes to extend service life.

Product Features:
  • Ideal replacement – this engine coolant thermostat housing assembly directly replaces the original water outlet 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 housing assemblies
See More

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

Thermostat Assembly: Includes Housing and O-Ring, 160 Degrees

from

$65.99
This replacement engine coolant thermostat housing assembly is engineered to match the fit and durability of the stock housing assembly on specified vehicles. It is designed to withstand extreme temperature changes to extend service life.

Product Features:
  • Ideal replacement – this engine coolant thermostat housing assembly directly replaces the original water outlet 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 housing assemblies
See More

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

Water Outlet with Thermostat

from

$54.99
Includes quality gasket to ensure proper seal
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Top-Rated Engine Cooling Part Brands For Your 2003 Chevrolet Corvette

When it comes to finding the perfect Engine Cooling Part for your 2003 Chevrolet Corvette, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 14 trusted brands. We carry the most popular Engine Cooling Part brands including ACDelco, FELPRO, and Carquest Premium, and more, all known for their exceptional customer ratings (average brand rating of 4.7 stars) and competitive prices, as low as $4.79. Purchasing a Engine Cooling Part from us here at Advance Auto Parts is a smart move for both you and your 2003 Chevrolet Corvette, providing peace of mind with parts that meet or exceed OEM standards.

Popular ACDelco 2003 Chevrolet Corvette Engine Cooling Parts

If you’re looking for a top-quality Engine Cooling Part for your 2003 Chevrolet Corvette, Advance Auto Parts has exactly what you need with our selection of ACDelco Engine Cooling Parts. We have 1 ACDelco Engine Cooling Parts in stock for this fitment, all known for their durability and precision fit. With prices starting at just $38.99, you’ll find the perfect Engine Cooling Part for your needs and budget. ACDelco Engine Cooling Parts for the 2003 Chevrolet Corvette come highly rated, with over 1 customer reviews and an impressive average rating of 4.7 stars. Choosing a ACDelco Engine Cooling Part from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Engine Coolant Temperature Sensor
from $38.99
(1)
Engine Coolant Temperature Sensor
“Easy to get to and change”

Top-Quality FELPRO 2003 Chevrolet Corvette Engine Cooling Parts

For those in search of a high-quality Engine Cooling Part for their 2003 Chevrolet Corvette, Advance Auto Parts offers a great selection of FELPRO Engine Cooling Parts. With 3 FELPRO 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 $4.79, with an average price of $6.59, giving you a range of options to suit your budget. Backed by over 129 customer ratings and an average rating of 4.6 stars, FELPRO Engine Cooling Parts provide both reliability and excellent performance. Choosing a FELPRO Engine Cooling Part from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
Engine Water Pump Gasket Kit
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.”
Engine Coolant Thermostat Gasket
from $4.79
(20)
Engine Coolant Thermostat Gasket
“No leaks!”
Engine Water Pump Gasket
from $7.49
(100)
Engine Water Pump Gasket
“Great product …easy to use”

FAQs for 2003 Chevrolet Corvette Engine Cooling Parts

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

Out of 43 Engine Cooling Parts that fit 2003 Chevrolet Corvettes, the following parts are the top sellers:

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

The prices of Engine Cooling Parts for the 2003 Chevrolet Corvette range from $4.79 up to $494.99 for the most premium parts.

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

The average price for Engine Cooling Parts for the 2003 Chevrolet Corvette is $73.68. 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 Corvette model years?

Yes, we carry Engine Cooling Parts for 70 model years of Chevrolet Corvettes between 1953 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 Corvette?

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

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 Corvette?

Based on 1,286 reviews by customers, our 2003 Chevrolet Corvette 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 Corvette and their top-rated products:

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

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

Can I get help with 2003 Chevrolet Corvette 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 Corvette Engine Cooling Parts?

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