2003 Honda Accord Engine Cooling Parts

Keep Your 2003 Honda Accord 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 Honda Accord looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Thermostats, Radiator Caps, and Radiators. 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 Dorman, Carquest Premium, and FELPRO. For example, Dorman Engine Cooling Parts start at just $7.29 with an average 4.2 star rating. Carquest Premium and FELPRO offer similar pricing and quality, backed by strong customer feedback. With over 2,962 reviews and a solid 4 star average, you can shop with confidence knowing other Honda Accord owners approve.

Competitive Prices and Extensive Inventory

The average price for a 2003 Honda Accord Engine Cooling Part at Advance Auto Parts is around $47.09, with a range that starts at $1.29 and goes up to $233.23. With 108 options in stock from 31 trusted brands, finding the right fit is easy. Popular picks like Standard Thermostat: 170 Degrees, Multi Purpose Relay, and Coolant Fan Switch start at just $10.99 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 Blend Doors and Blower Motor and Related Products. At Advance Auto Parts, we’re here to help you keep your 2003 Honda Accord in peak condition, inside and out.

Essential 2003 Honda Accord Engine Cooling Parts

Ishino – Fuel Injector O-Ring (Part No.C101245500ISH)

Fuel Injector O-Ring

from

$1.29
Fuel Injector O-Ring

Driveworks – Coolant Fan Switch (Part No.85232)

Coolant Fan Switch

from

$35.99
Driveworks® offers a line of aftermarket parts and accessories that are commercially acceptable and competitively priced, which provides professional technicians and DIYers with an affordable alternative for repairs.

Product Features:
  • Direct-fit OE replacement ensures ease of installation
  • Designed to meet OE performance
  • As the leader in commercially acceptable parts, we provide professional technicians with the quality parts they need
  • As the leader in commercially acceptable parts, we provide professional technicians with the quality parts they need
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MAHLE Original – Engine Coolant Manifold O-Ring (Part No.C32018)

Engine Coolant Manifold O-Ring

from

$2.49
MAHLE® gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.

Product Features:
  • All MAHLE gaskets meet or exceed the original equipment specifications providing the finest sealing products available
  • MAHLE gaskets utilizes OE equivalent or better materials in all our gaskets
  • MAHLE gaskets is the leader in Domestic, Asian and European applications
  • The contents of MAHLE gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package
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Carquest Premium – Multi Purpose Relay (Part No.FCA1004)

Multi Purpose Relay

from

$17.49
Carquest premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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Sankei Switches – Sankei Switches Radiator Cap (Part No.G1010324668SAK)

Sankei Switches Radiator Cap

from

$12.85
The Sankei Switches radiator cap range has been developed to operate within original equipment manufacturer’s specifications. A faulty radiator cap can cause your car to boil-over at a lower temperature. Test or replace the coolant cap when servicing the cooling system.

Product Features:
  • Meets Original Equipment specifications.
  • Made from premium materials.
  • Designed to function on open cooling systems and overflow reservoir type systems.
See More

Nippon Reinz – Engine Coolant Thermostat Housing Gasket (Part No.G4020120278NRZ)

Engine Coolant Thermostat Housing Gasket

from

$4.21
The Nippon Reinz Engine Coolant Thermostat Housing Gasket is a high quality Original Equipment replacement that is manufactured to meet or exceed OE specifications for fit, form, and function.

Product Features:
  • Seals the thermostat housing and helps prevent coolant from leaking from the engine for proper engine temperature
  • Premium Original Equipment replacement
  • Provides performance and dependability
  • Manufactured to meet OE specifications
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Dorman – Radiator Fan Assembly: Dual, Cost Effective and Reliable (Part No.620-225)

Radiator Fan Assembly: Dual, Cost Effective and Reliable

from

$169.99
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
See More

Nippon Reinz – Water Pipe O-Ring (Part No.G2026121480NRZ)

Water Pipe O-Ring

from

$4.11
NIPPON REINZ engineers work with OEMs to develop complete engine sealing solutions for gasoline, diesel, and alternative energy vehicles. We employ custom sealing solutions through our expert problem solving utilizing our regional research and development centers. As an Integral Partner with Virtually Every major vehicle and engine manufacturer worldwide, NIPPON REINZ offers a comprehensive range of sealing Innovative Systems, INCLUDING Head gaskets, Heat shields, sealing modules, secondary gaskets, Valve stem Seals, and transmission components.
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Ishino – Stone Engine Coolant Thermostat Gasket (Part No.G4031120468ISH)

Stone Engine Coolant Thermostat Gasket

from

$3.93
The Ishino Stone Engine Coolant Thermostat Gasket is an ideal high quality aftermarket replacement that is manufactured to meet or exceed OE specifications for fit, form, and function.

Product Features:
  • Seals the thermostat housing and helps prevent coolant from leaking from the engine for proper engine temperature
  • Premium aftermarket replacement
  • Provides performance and dependability
  • Manufactured to meet OE specifications
See More

Carquest Premium – Multi Purpose Relay (Part No.RAA1731)

Multi Purpose Relay

from

$10.99
Carquest premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
See More

NTC – Thermostat (Part No.G4002551737NTC)

Thermostat

from

$65.87
NTC offers a full line of thermostats to replace your original equipment thermostat. This includes a wide variety of temperature ranges all designed to operate within OEM specifications.

Product Features:
  • Strict quality control, and functional testing
  • Self-cleaning and self-aligning thermostat valve
  • Original equipment design provides exact fit and performance
  • Precise sealing edges reduce leakage and premature cooling
  • Temperature sensitive heat motor provides consistent valve response for smooth performance and precise engine cooling
  • Stainless steel assembly and springs are engineered for long life
See More

Dorman – Coolant Reservoir – Expansion Tank (Part No.G1030291019DOR)

Coolant Reservoir - Expansion Tank

from

$68.93
Dorman’s Engine Coolant Recovery Tank is designed for enduring use. It resists the expansion and cracking that extreme temperature fluctuations can cause. Plus, the durable plastic construction prevents coolant fluid loss.

Product Features:
  • Comes with reservoir cap
  • Level sensor included (where applicable)
  • Direct replacement for a proper fit every time
  • Quality tested to ensure trouble-free installation and performance
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AISIN – OE Replacement Water Pump (Part No.G300050489ASC)

OE Replacement Water Pump

from

$99.04
The AISIN Water Pump contains no remanufactured parts and provides optimal cooling without creating excess load to the engine. The highest quality materials are used, creating stronger body design and resistance to corrosion.

Product Features:
  • OE-Equivalent and direct fit application.
  • 100% new with no remanufactured parts.
  • Advanced technological design.
  • Carbon ceramic sealing.
  • Resistant to corrosion.
  • Optimum cooling performance and longevity.
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Motorad – Integrated Thermostat Housing: With Seal, 172 Degrees (Part No.729-172)

Integrated Thermostat Housing: With Seal, 172 Degrees

from

$56.99
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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FAE – Engine Cooling Auxiliary Thermo-Fan Switch (Part No.G5030437401FAE)

Engine Cooling Auxiliary Thermo-Fan Switch

from

$26.54
The FAE Engine Cooling Thermo-Fan Switch is a high quality Original Equipment replacement that is manufactured to meet or exceed OE specifications for fit, form, and function.

Product Features:
  • Corrosion resistant housings
  • Nickel-plated or brass terminals for superior conductivity
  • High-temp composite O.E.M.-type connectors designed to mate with vehicle wiring harness without modification
  • Thermal switches matched to OEM temperatures to assure consistent performance
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Ishino – Stone Engine Coolant Thermostat Housing Gasket (Part No.G4020184565ISH)

Stone Engine Coolant Thermostat Housing Gasket

from

$1.62
The Ishino Stone Engine Coolant Thermostat Housing Gasket is a high quality Original Equipment replacement that is manufactured to meet or exceed OE specifications for fit, form, and function.

Product Features:
  • Seals the thermostat housing and helps prevent coolant from leaking from the engine for proper engine temperature
  • Premium Original Equipment replacement
  • Provides performance and dependability
  • Manufactured to meet OE specifications
See More

Felpro – Engine Coolant Thermostat Housing Gasket (Part No.35739)

Engine Coolant Thermostat Housing Gasket

from

$3.79
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
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Ishino – Water Pipe O-Ring (Part No.G202665192ISH)

Water Pipe O-Ring

from

$2.19
Water Pipe O-Ring

Imperial – Thermostatic Fan Control – Preset (Part No.226206)

Thermostatic Fan Control - Preset

from

$40.49
Controls the operating temperature of Imperial electric fans. Operates up to 2 fans.

Product Features:
  • Preset thermostatic fan control
  • 185°F preset
  • For use with Imperial electric fans
  • Probe installs into radiator fins
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Dorman – Help – Radiator Drain Cocks (Part No.61125)

Radiator Drain Cocks

from

$7.29
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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KAI – New Standard Replacement Radiator Support Upper Cover [Sight Shield] For Sedan And Hybrid Models (Part No.HO1207102)

New Standard Replacement Radiator Support Upper Cover [Sight Shield] For Sedan And Hybrid Models

from

$21.99
With a Serious and Unwavering Commitment to Providing Customers a Broad Range of High Quality Replacement Components, Equipment, and Parts to Repair and Accessorize Their Automobiles, Trucks, and Other Vehicles, We Are Offering a New Standard Replacement Radiator Support Upper Cover [Sight Shield] for Sedan and Hybrid Models. It is Designed to Replace Your Existing Radiator Support Cover. Check to Be Sure it Fits Your Vehicle.

Product Features:
  • Made Of Polypropylene
  • 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
See More

Dorman – Help – Engine Coolant Reservoir Cap: Twist, Plastic/Rubber, 1 Pack (Part No.54370)

Engine Coolant Reservoir Cap: Twist, Plastic/Rubber, 1 Pack

from

$26.99
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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Carquest Premium – Radiator Cap Tester Adapter (Part No.12024)

Radiator Cap Tester Adapter

from

$16.49
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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Dorman – Radiator Fan Assembly (Part No.621-973)

Radiator Fan Assembly

from

$132.99
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
See More

Carquest Premium – Radiator Cap Tester Adapter (Part No.12021)

Radiator Cap Tester Adapter

from

$17.79
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
See More

Dorman – Coolant Housing/Water Outlet: with Housing and Gasket, 90 Degree Neck Angle (Part No.902-5008)

Coolant Housing/Water Outlet: with Housing and Gasket, 90 Degree Neck Angle

from

$12.79
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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Ishino – Water Pump Gasket (Part No.G3040121483ISH)

Water Pump Gasket

from

$3.16
Water Pump Gasket

Carquest Premium – Coolant Temperature Sensor (Part No.WTC1009)

Coolant Temperature Sensor

from

$47.99
Approved materials for increased durability in even the most extreme temperatures. All MotoRad Coolant Temperature Sensors are designed to meet or exceed OEM specifications at our ISO TS16949 manufacturing facilities.

Product Features:
  • 100% factory resistance calibrated to ensure precision tolerances, resulting in extremely accurate temperature for optimal performance
  • Thread Sealant and/or O-ring pre-installed on applicable sensors to ensure leak free performance
  • Brass sensor housing precision machined to meet or exceed OE thermal conductivity
  • OE precision matched thermistor position for correct output parameters
  • Extensive product testing includes salt spray, high/low temperature impact, thermal vibration, durability, static electricity, and micro tension, among other tests, to ensure all sensors meet or exceed OEM specifications.
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Most Popular Thermostats for 2003 Honda Accords

Enhance your 2003 Honda Accord with one of the 8 Thermostats we have in stock, starting at just $9.29.

Carquest Premium – Standard Thermostat: 170 Degrees (Part No.14337)

Standard Thermostat: 170 Degrees

from

$20.79
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
See More

Carquest Premium – Thermostat (Part No.48227)

Thermostat

from

$9.29
Original equipment design provides exact fit and performance.

Product Features:
  • Precise fitting sealing edges prevent leakage and premature cooling.
  • Self-cleaning and self-aligning thermostat valve.
  • Stainless steel assembly and springs are engineered for long life and smooth performance.
See More

Motorad UltraStats – Thermostat: 170 Degrees (Part No.5302-170)

Thermostat: 170 Degrees

from

$23.99
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:
  • 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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Beck/Arnley - Thermostat (Part No.143-0707)

Thermostat

from

$40.99
Beck/Arnley parts meet foreign nameplate OE specifications for form, fit and function. Our product specialists work with a network of global sourcing partners so you can install the right part with confidence.

Product Features:
  • Matches OE form, fit and function
  • Features a standard jiggle valve where required by OE and has a long stroke for maximum cooling
  • Constructed with premium materials for durability
  • Be sure to use the proper coolant to maximize cooling system components. See Beck/Arnley catalog for the coolant for this application.
  • Application specific for this vehicle
See More

NTC - Thermostat (Part No.G4000181162NTC)

Thermostat

from

$38.79
NTC offers a full line of thermostats to replace your original equipment thermostat. This includes a wide variety of temperature ranges all designed to operate within OEM specifications.

Product Features:
  • Strict quality control, and functional testing
  • Self-cleaning and self-aligning thermostat valve
  • Original equipment design provides exact fit and performance
  • Precise sealing edges reduce leakage and premature cooling
  • Temperature sensitive heat motor provides consistent valve response for smooth performance and precise engine cooling
  • Stainless steel assembly and springs are engineered for long life
See More

Beck/Arnley - Thermostat (Part No.143-0845)

Thermostat

from

$28.49
Beck/Arnley parts meet foreign nameplate OE specifications for form, fit and function. Our product specialists work with a network of global sourcing partners so you can install the right part with confidence.

Product Features:
  • Matches OE form, fit and function
  • Features a standard jiggle valve where required by OE and has a long stroke for maximum cooling
  • Constructed with premium materials for durability
  • Be sure to use the proper coolant to maximize cooling system components. See Beck/Arnley catalog for the coolant for this application.
  • Application specific for this vehicle
See More

Autopart International Inc - Thermostat Assembly (Part No.G40021932624API)

Thermostat Assembly

from

$107.11
Thermostat Assembly

Autopart International Inc - Thermostat (Part No.G40001954088API)

Thermostat

from

$22.75
Thermostat

Best-Selling 2003 Honda Accord Radiator Caps

Upgrade your Accord with one of our 7 best-selling Radiator Caps, earning an average 4.5 stars rating across 331 reviews.

Sankei Switches - Sankei Switches Radiator Cap (Part No.G101045813SAK)

Sankei Switches Radiator Cap

from

$11.27
The Sankei Switches radiator cap range has been developed to operate within original equipment manufacturer's specifications. A faulty radiator cap can cause your car to boil-over at a lower temperature. Test or replace the coolant cap when servicing the cooling system.

Product Features:
  • Meets Original Equipment specifications.
  • Made from premium materials.
  • Designed to function on open cooling systems and overflow reservoir type systems.
See More

Carquest Premium - Radiator Cap: 16 PSI (Part No.10233)

Radiator Cap: 16 PSI

from

$13.99
Crafted to meet the exact specifications set by Original Equipment Manufacturers (OEM), these products are engineered for effortless installation and removal. Constructed from premium-grade components, incorporating proper relief and vacuum valves, they ensure optimal performance even in the most demanding automotive cooling systems. Rigorously quality-tested, these components provide exceptional, out-of-the-box performance and superior durability to meet or exceed the highest standards of today's vehicles.

Product Features:
  • Maintains proper cooling system pressure
  • Easy installation and removal
  • 100% tested to ensure proper pressure and longevity
  • Meets all OEM specifications
See More

Carquest Premium - Radiator Cap: 16 PSI (Part No.10242)

Radiator Cap: 16 PSI

from

$14.99
Crafted to meet the exact specifications set by Original Equipment Manufacturers (OEM), these products are engineered for effortless installation and removal. Constructed from premium-grade components, incorporating proper relief and vacuum valves, they ensure optimal performance even in the most demanding automotive cooling systems. Rigorously quality-tested, these components provide exceptional, out-of-the-box performance and superior durability to meet or exceed the highest standards of today's vehicles.

Product Features:
  • Maintains proper cooling system pressure
  • Easy installation and removal
  • 100% tested to ensure proper pressure and longevity
  • Meets all OEM specifications
See More

Sankei Switches - Sankei Switches Radiator Cap (Part No.G1010324668SAK)

Sankei Switches Radiator Cap

from

$12.85
The Sankei Switches radiator cap range has been developed to operate within original equipment manufacturer's specifications. A faulty radiator cap can cause your car to boil-over at a lower temperature. Test or replace the coolant cap when servicing the cooling system.

Product Features:
  • Meets Original Equipment specifications.
  • Made from premium materials.
  • Designed to function on open cooling systems and overflow reservoir type systems.
See More

Dorman - Help - Radiator Cap (Part No.54237)

Radiator Cap

from

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

Product Features:
  • Direct replacement - this radiator cap is designed to match the fit and function of the original cap on specified vehicles.
  • Restores functionality - reliable replacement for an original cap that is missing, leaking or failed due to gasket fatigue and heat
  • Durable construction - this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality - backed by team of product experts in the United States and more than a century of automotive experience
See More

Autopart International Inc - Radiator Cap (Part No.G10101993772API)

Radiator Cap

from

$19.45
Radiator Cap

Autopart International Inc - Radiator Cap (Part No.G10101964892API)

Radiator Cap

from

$14.15
Radiator Cap

Top-Quality Radiators for 2003 Honda Accords

Choose a high-quality OEM or aftermarket Radiator for Honda Accords and enjoy top-notch performance from $102.99.

Carquest Premium - Radiator: With Transmission Oil Cooler (Part No.433875)

Radiator: With Transmission Oil Cooler

from

$214.99
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 engineered with integrated ribbing for added strength 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
  • Oil cooler designs meet or exceed OE standards, keeping the vehicle¿s engine and transmission performing at optimal conditions
  • OEM grade, premium fittings for transmission or engine oil coolers (where applicable)
See More

DENSO - First Time Fit Radiator (Part No.G1000383270ND)

First Time Fit Radiator

from

$233.23
DENSO is a leading supplier of radiators to OE car makers around the world. Manufacturers rely on our quality and innovation to remain on the leading edge of engine cooling technology. Our OE experience and know-how ensure our products provide unmatched performance, reliability and fitment. Radiator performance is essential for proper engine cooling and function. DENSO's radiator configurations, tanks, fin pitch, core dimensions and materials meet OE manufacturer's rigid standards. All DENSO radiators pass our strict durability and function tests. As the result, our radiators deliver reliable performance even under the most demanding conditions. Radiator types: Plastic tank with aluminum core. Plastic tank with copper core. Cross-flow and down-flow configurations. DENSO is known for the unsurpassed quality of its products. Plastic, copper or aluminum components: it doesn't matter. Our DENSO radiators are dependable, lightweight and made to last. An investment in a DENSO radiator will pay dividends in the long run. Radiators can fail causing leaks or inefficient cooling. This can lead to your engine to run hotter which in turn creates excess wear and tear on the engine. DENSO radiators are designed with our First Time Fit® philosophy in mind. You get radiators that drop in easily without the need for adjustment, brackets or modification of any kind. Our radiators are precision built to provide the right part, the right fit, the first time.

Product Features:
  • Fin Pitch - Superior fin waves provide a higher heat transfer.
  • Flow Configuration - Available in cross-flow and down-flow configurations.
  • Aluminum or Copper Core - Thin-tube construction assures maximum cooling efficiency.
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Carquest Premium - Radiator (Part No.432641)

Radiator

from

$209.99
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 engineered with integrated ribbing for added strength 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

KAI - Radiator (Part No.RAD2571)

Radiator

from

$102.99
New Platinum Pro Radiator, V6 Engine, Automatic Transmission, Use With External Oil Cooler

Product Features:
  • V6 Engine, Automatic Transmission, Use With External Oil Cooler, 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
  • Radiator Cap Not Included
  • Check Out The Large Selection Of Parts Available For Your Vehicle
See More

Koyo Cooling - Plastic Tank Radiator with Aluminum Core, OE-Style Fit for Quick Installation (Part No.G1000142393KCS)

Plastic Tank Radiator with Aluminum Core, OE-Style Fit for Quick Installation

from

$138.91
Plastic Tank / Aluminum Core Radiator Koyo radiators are available in plastic tank and aluminum core. The Nocolok brazing line keeps the highest quality standards, bringing you superior products you can rely on. The Koyo Cooling radiator has been engineered to the highest standards and incorporates application specific mounting locations for all fan shrouds, inlet-outlet hoses and top-bottom mounting pins, ensuring quick and pain-free installs.

Product Features:
  • All Aluminum Core and Plastic Tank
  • OE Style mounting brackets and hose connections
  • Integrated transmission oil cooler when applicable
  • Compact and lightweight
See More

KAI - Radiator (Part No.RAD2599)

Radiator

from

$107.99
New Platinum Pro Radiator, 2.4 Liter L4 Engine, Automatic Or Manual Transmission, 1 Row Core, Valeo Design

Product Features:
  • 2.4 Liter L4 Engine, Automatic Or Manual Transmission, 1 Row Core, Valeo Design, 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
  • Radiator Cap Not Included
  • Check Out The Large Selection Of Parts Available For Your Vehicle
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Koyo Cooling - Radiator (Part No.G1000313117KCS)

Radiator

from

$231.44
Plastic Tank / Aluminum Core Radiator Koyo radiators are available in plastic tank and aluminum core. The Nocolok brazing line keeps the highest quality standards, bringing you superior products you can rely on. The Koyo Cooling radiator has been engineered to the highest standards and incorporates application specific mounting locations for all fan shrouds, inlet-outlet hoses and top-bottom mounting pins, ensuring quick and pain-free installs.

Product Features:
  • All Aluminum Core and Plastic Tank
  • OE Style mounting brackets and hose connections
  • Integrated transmission oil cooler when applicable
  • Compact and lightweight
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DENSO - First Time Fit Radiator (Part No.G1000383271ND)

First Time Fit Radiator

from

$225.88
DENSO is a leading supplier of radiators to OE car makers around the world. Manufacturers rely on our quality and innovation to remain on the leading edge of engine cooling technology. Our OE experience and know-how ensure our products provide unmatched performance, reliability and fitment. Radiator performance is essential for proper engine cooling and function. DENSO's radiator configurations, tanks, fin pitch, core dimensions and materials meet OE manufacturer's rigid standards. All DENSO radiators pass our strict durability and function tests. As the result, our radiators deliver reliable performance even under the most demanding conditions. Radiator types: Plastic tank with aluminum core. Plastic tank with copper core. Cross-flow and down-flow configurations. DENSO is known for the unsurpassed quality of its products. Plastic, copper or aluminum components: it doesn't matter. Our DENSO radiators are dependable, lightweight and made to last. An investment in a DENSO radiator will pay dividends in the long run. Radiators can fail causing leaks or inefficient cooling. This can lead to your engine to run hotter which in turn creates excess wear and tear on the engine. DENSO radiators are designed with our First Time Fit® philosophy in mind. You get radiators that drop in easily without the need for adjustment, brackets or modification of any kind. Our radiators are precision built to provide the right part, the right fit, the first time.

Product Features:
  • Fin Pitch - Superior fin waves provide a higher heat transfer.
  • Flow Configuration - Available in cross-flow and down-flow configurations.
  • Aluminum or Copper Core - Thin-tube construction assures maximum cooling efficiency.
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CSF - OE Quality Radiator (Part No.G1000314130CSF)

OE Quality Radiator

from

$160.68
Plastic Tank / Aluminum Core Radiator CSF prides itself on using the most advanced technologies, machines, and experienced personnel to design, develop, and manufacture the world's best cooling systems. With three privately owned, ISO certified manufacturing facilities that supply to local OE brands, CSF houses the industry's best manufacturing equipment. CSF's world class facilities manufacture the highest quality cooling system products available. Thanks to our cutting edge capabilities, we are able to produce the strongest and most complicated components with ease. CSF leads the industry in multi-fit models, which provides customers with additional application coverage, while reducing inventory. All CSF radiators undergo a rigorous testing process in our state-of-the-art testing lab. Our procedures and requirements set the bar for cooling system reliability and performance:

Product Features:
  • Individually leak tested
  • Vibration cycle tested
  • Thermal cycle tested
  • Wind tunnel tested for optimal radiator core cooling efficiency
  • Burst pressure and impulse cycle tested for strength
  • Salt spray tested for corrosion protection
  • 10 foot box "drop test" to ensure packaging protection
  • 30 point fitment inspection on critical dimensions to ensure OE fitment with no modifications necessary
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Autopart International Inc - Radiator (Part No.G10002022526API)

Radiator

from

$115.38
Radiator

Top Picks for 2003 Honda Accord Thermostat and Water Outlet Assemblies

Invest in one of our 3 durable Thermostat and Water Outlet Assemblies for your 2003 Ford, knowing you're getting trusted brands and expert craftsmanship.

Beck/Arnley - Thermostat (Part No.143-0813)

Thermostat

from

$61.99
Beck/Arnley parts meet foreign nameplate OE specifications for form, fit and function. Our product specialists work with a network of global sourcing partners so you can install the right part with confidence.

Product Features:
  • Matches OE form, fit and function
  • Premium materials to withstand extreme temperatures and long stroke for maximum cooling
  • Quality construction for durability
  • Be sure to use the proper coolant to maximize cooling system components. See Beck/Arnley catalog for the coolant for this application.
  • Application specific for this vehicle
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Motorad - Integrated Thermostat Housing: With Seal, 170 Degrees (Part No.554-170)

Integrated Thermostat Housing: With Seal, 170 Degrees

from

$66.99
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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Dorman - Thermostat Assembly: Includes Thermostat housing and Gasket, 172 Degrees (Part No.902-5142)

Thermostat Assembly: Includes Thermostat housing and Gasket, 172 Degrees

from

$64.99
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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Top-Rated Water Pumps for 2003 Honda Accords

Make a smart move for your 2003 Honda Accord with products all priced from $56.99 to $149.18.

Carquest Premium - Engine Water Pump: New, Gasket/Seals Included (Part No.T2296)

Engine Water Pump: New, Gasket/Seals Included

from

$109.99
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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Driveworks Water Pumps - Water Pump: New, Installation Gasket Included (Part No.57-1605)

Water Pump: New, Installation Gasket Included

from

$67.99
Driveworks Water Pumps offer a complete replacement part solution, with application coverage that spans from antique to present-day vehicles. All units are 100% tested and engineered to meet or exceed OEM performance, providing you a quality product you and your vehicle can rely on. All units are manufacturered with brand new components and are packaged with all gaskets required for replacement.

Product Features:
  • 100% Factory tested for leakage and dimensional precision
  • Manufactured to original casting specifications to ensure a proper fit and proper water flow for efficient cooling
  • Bearings made of heat-treated carbon or carburized steel are sealed and lubricated to ensure smooth performance throughout units life
  • Assembled with new, high-quality unitized shaft seals to prevent premature leakage
  • Supplied with gasket and other seals/gaskets as applicable per application to help complete the job
  • This pump is driven by the accessory belt and we recommend replacement if nearing service recommendation
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Driveworks Water Pumps - Water Pump: New, Installation Gasket Included (Part No.57-1611)

Water Pump: New, Installation Gasket Included

from

$56.99
Driveworks Water Pumps offer a complete replacement part solution, with application coverage that spans from antique to present-day vehicles. All units are 100% tested and engineered to meet or exceed OEM performance, providing you a quality product you and your vehicle can rely on. All units are manufacturered with brand new components and are packaged with all gaskets required for replacement.

Product Features:
  • 100% Factory tested for leakage and dimensional precision
  • Manufactured to original casting specifications to ensure a proper fit and proper water flow for efficient cooling
  • Bearings made of heat-treated carbon or carburized steel are sealed and lubricated to ensure smooth performance throughout units life
  • Assembled with new, high-quality unitized shaft seals to prevent premature leakage
  • Supplied with gasket and other seals/gaskets as applicable per application to help complete the job
  • This pump is driven by the timing belt; see vehicle manufacturer recommendation for replacement of timing components
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AISIN - OE Replacement Water Pump (Part No.G3000120449ASC)

OE Replacement Water Pump

from

$137.69
The AISIN Water Pump contains no remanufactured parts and provides optimal cooling without creating excess load to the engine. The highest quality materials are used, creating stronger body design and resistance to corrosion.

Product Features:
  • OE-Equivalent and direct fit application.
  • 100% new with no remanufactured parts.
  • Advanced technological design.
  • Carbon ceramic sealing.
  • Resistant to corrosion.
  • Optimum cooling performance and longevity.
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AISIN - OE Replacement Water Pump (Part No.G3000167512ASC)

OE Replacement Water Pump

from

$149.18
The AISIN Water Pump contains no remanufactured parts and provides optimal cooling without creating excess load to the engine. The highest quality materials are used, creating stronger body design and resistance to corrosion.

Product Features:
  • OE-Equivalent and direct fit application.
  • 100% new with no remanufactured parts.
  • Advanced technological design.
  • Carbon ceramic sealing.
  • Resistant to corrosion.
  • Optimum cooling performance and longevity.
See More

NPW - Water Pump (Part No.G3000120449NPW)

Water Pump

from

$79.98
The NPW water pump is a 100% new replacement and contains no remanufactured components, assuring original equipment performance, quality and fit.

Product Features:
  • OE-Equivalent and direct fit application.
  • 100% new with no remanufactured parts.
  • Advanced impeller design.
  • Quality cast housing.
  • Precision bearings.
  • Resistant to corrosion.
  • Unitized bearing assembly.
See More

NPW - Water Pump (Part No.G3000167512NPW)

Water Pump

from

$87.63
The NPW water pump is a 100% new replacement and contains no remanufactured components, assuring original equipment performance, quality and fit.

Product Features:
  • OE-Equivalent and direct fit application.
  • 100% new with no remanufactured parts.
  • Advanced impeller design.
  • Quality cast housing.
  • Precision bearings.
  • Resistant to corrosion.
  • Unitized bearing assembly.
See More

Top-Rated Engine Cooling Part Brands For Your 2003 Honda Accord

When it comes to finding the perfect Engine Cooling Part for your 2003 Honda Accord, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 31 trusted brands. We carry the most popular Engine Cooling Part brands including FELPRO, Carquest Premium, and Dorman, and more, all known for their exceptional customer ratings (average brand rating of 4.6 stars) and competitive prices, as low as $4.29. Purchasing a Engine Cooling Part from us here at Advance Auto Parts is a smart move for both you and your 2003 Honda Accord, providing peace of mind with parts that meet or exceed OEM standards.

Popular FELPRO 2003 Honda Accord Engine Cooling Parts

If you're looking for a top-quality Engine Cooling Part for your 2003 Honda Accord, Advance Auto Parts has exactly what you need with our selection of FELPRO Engine Cooling Parts. We have 2 FELPRO Engine Cooling Parts in stock for this fitment, all known for their durability and precision fit. With prices starting at just $4.29 and an average cost of $5.39, you’ll find the perfect Engine Cooling Part for your needs and budget. FELPRO Engine Cooling Parts for the 2003 Honda Accord come highly rated, with over 3 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.
THERMOSTAT GASKET
from $4.29
(1)
THERMOSTAT GASKET
"Works for my 05 accord, 2.4L k24"
O-RING
from $6.49
(2)
O-RING
"It is made in Japan. It fits Aisin Thermostat on 2007 Honda Odyssey."

Top-Quality Carquest Premium 2003 Honda Accord Engine Cooling Parts

For those in search of a high-quality Engine Cooling Part for their 2003 Honda Accord, 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 $13.99, with an average price of $16.59, giving you a range of options to suit your budget. Backed by over 370 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.
Radiator Cap: 16 PSI
from $13.99
(193)
Radiator Cap: 16 PSI
"fits better than OEM"
Radiator Cap: 16 PSI
from $14.99
(137)
Radiator Cap: 16 PSI
"Replace radiator so got a new cap too. Fits perfect."
Standard Thermostat: 170 Degrees
from $20.79
(40)
Standard Thermostat: 170 Degrees
"perfect fit"

FAQs for 2003 Honda Accord Engine Cooling Parts

What are the best-selling Engine Cooling Parts for 2003 Honda Accords?

Out of 108 Engine Cooling Parts that fit 2003 Honda Accords, the following parts are the top sellers:

What’s the price range for 2003 Honda Accord Engine Cooling Parts?

The prices of Engine Cooling Parts for the 2003 Honda Accord range from $1.29 up to $233.23 for the most premium parts.

What is the average price of an Engine Cooling Parts Engine Cooling Part for a 2003 Honda Accord?

The average price for Engine Cooling Parts for the 2003 Honda Accord is $47.09. 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 Honda Accord model years?

Yes, we carry Engine Cooling Parts for 47 model years of Honda Accords between 1976 and 2024. The following model years are the most popular for Engine Cooling Part purchases: 2022, 2021, 2020, 2019, 2018, 2017, 2016, 2015, and 2014.

What are the cheapest Engine Cooling Parts for my 2003 Honda Accord?

The cheapest 2003 Honda Accord Engine Cooling Parts we carry are:

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

Yes. We stock Engine Cooling Parts for 6 other popular 2003 Honda models. Some of the most popular are 2003 Odyssey Engine Cooling Parts, 2003 Pilot Engine Cooling Parts, 2003 Civic Engine Cooling Parts, 2003 CR-V Engine Cooling Parts, and 2003 Element Engine Cooling Parts.

What types of Engine Cooling Parts do you sell for my 2003 Honda Accord?

As of 4/10/25, these are some of the most in-demand types of Engine Cooling Parts for a 2003 Honda Accord:

Can I get help with 2003 Honda Accord 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 Honda Engine Cooling Parts and more.

What is your return policy for Honda Accord Engine Cooling Parts?

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