2003 Jeep Wrangler Engine Cooling Parts

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Keep Your 2003 Jeep Wrangler 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 Jeep Wrangler looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Thermostats, Radiators, and Water Pumps. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Top-Rated Engine Cooling Parts from Trusted Brands

Looking for a reliable Engine Cooling Part? We’ve got you covered with options from brands you know and trust like Carquest Premium, Dorman, and . For example, Carquest Premium Engine Cooling Parts start at just $6.79 with an average 4.4 star rating. Dorman and offer similar pricing and quality, backed by strong customer feedback. With over 4,314 reviews and a solid 4 star average, you can shop with confidence knowing other Jeep Wrangler owners approve.

Competitive Prices and Extensive Inventory

The average price for a 2003 Jeep Wrangler Engine Cooling Part at Advance Auto Parts is around $72.94, with a range that starts at $1.99 and goes up to $556.99. With 65 options in stock from 18 trusted brands, finding the right fit is easy. Popular picks like Engine Coolant Thermostat Housing Gasket, Coolant Housing/Water Outlet: with Housing, 95 Degree Neck Angle, and Radiator Cap: 18 PSI start at just $8.29 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 Jeep Wrangler in peak condition, inside and out.

Find Your Specific 2003 Jeep Wrangler Engine Cooling Parts

Looking for the perfect Engine Cooling Part for your 2003 Jeep Wrangler? You’re in the right place. Below, you’ll find links to various types of Engine Cooling Parts that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Engine Cooling Parts, ensuring durability and a precise fit for your Jeep Wrangler. Whether you’re driving a 2003 model or another popular model year like 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, and 2023, we’ve got you covered. Purchasing Engine Cooling Parts from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Engine Cooling Parts that fit your vehicle.

Essential 2003 Jeep Wrangler Engine Cooling Parts

Dorman – Clutch Fan Blade: Metal, Cost Effective and Reliable (Part No.621-593)

Clutch Fan Blade: Metal, Cost Effective and Reliable

from

$200.99
Replace your damaged cooling fan blade with this direct replacement. This vehicle-specific application is engineered for a perfect fit and is made from quality materials to ensure durability and restore proper cooling system operation.

Product Features:
  • Direct replacement – this engine cooling fan blade fits and functions like the original equipment fan blade
  • Quality construction – manufactured from premium materials for a long service life
  • Excellent value – original equipment quality at a lower price
  • Quality tested – has undergone testing to ensure proper fit and performance
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Imperial – Electric Fan, 14" Diameter (Part No.226114)

Electric Fan, 14" Diameter

from

$99.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.

Product Features:
  • Motors built and tested to quality specifications
  • 14 in. universal fit reversible fan
  • 1250 CFM
  • UNIVERSAL fan, NOT a direct OE replacement. Measure core and verify space.
  • Motors built and tested to quality specifications
  • 14 in. universal fit reversible fan
  • 1250 CFM
  • UNIVERSAL fan, NOT a direct OE replacement. Measure core and verify space.
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(14 reviews)
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Crown Auto Jeep Replacmnt – Oem Replacement (Part No.33004281)

Oem Replacement

from

$25.99
Crown Automotive continues to be the leader in quality replacement parts for Jeep(R) vehicles. Crown has the largest stock of replacement parts for Jeep(R) vehicles, including factory discontinued parts. In fact, many of the older Jeeps are still on (and off) the road thanks to Crown parts. The Crown line consists of axle, body, brake, clutch, cooling, driveline, electrical, engine, exhaust, fuel, steering, suspension, transmission And transfer case components. Crown Automotive also offers an exclusive line of component kits And accessory products.

Product Features:
  • Manufactured From High Quality Material
  • Engineered To The Specifications
  • Meets The Quality Standards
  • Designed For Performance And Durability
  • Easy To Install
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Felpro – Engine Water Pump Gasket (Part No.35586)

Engine Water Pump Gasket

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$3.29
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
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(6 reviews)
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KAI – Coolant Reservoir (Part No.CH3014104)

Coolant Reservoir

from

$22.99
New Platinum Pro Coolant Recovery Tank

Product Features:
  • Made Of Plastic
  • Meets All Federal Motor Safety Standards
  • No Drilling Needed For Installation
  • No Modifications Needed For Installation
  • Direct Fit Replacement For Your Vehicle
  • Same Form Fit And Function As OE
  • Check Out The Large Selection Of Parts Available For Your Vehicle
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Felpro – Engine Water Pump Gasket (Part No.36248)

Engine Water Pump Gasket

from

$223.99
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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Crown Auto Jeep Replacmnt – OE Replacement (Part No.53007978)

OE Replacement

from

$20.99
Crown Automotive continues to be the leader in quality replacement parts for Jeep(R) vehicles. Crown has the largest stock of replacement parts for Jeep(R) vehicles, including factory discontinued parts. In fact, many of the older Jeeps are still on (and off) the road thanks to Crown parts. The Crown line consists of axle, body, brake, clutch, cooling, driveline, electrical, engine, exhaust, fuel, steering, suspension, transmission And transfer case components. Crown Automotive also offers an exclusive line of component kits And accessory products.

Product Features:
  • Leading Manufacturer Of Quality Replacement Parts For Jeep
  • Meets Standards For Quality
  • Crown Automotive Has Consistently Maintained Its Commitment To Offering Only Quality Parts And Exceptional Service
  • Improve The Performance
  • Easy Installation
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Dorman – Help – Engine Coolant Reservoir Cap: Flip Top, Polypropylene, 1 Pack (Part No.54201)

Engine Coolant Reservoir Cap: Flip Top, Polypropylene, 1 Pack

from

$14.49
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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(15 reviews)
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Carquest Premium – Radiator (Part No.438146)

Radiator

from

$259.99
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
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(40 reviews)
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Holley – Water Neck – Swivel 90 Degree Angle – Black (Part No.97-341)

Water Neck - Swivel 90 Degree Angle - Black

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$83.99
These water necks fit Mopar Gen III Hemi engines, and are ideal for use in engine swaps since the swivel allows adjustment to accommodate custom radiator hoses. The billet aluminum with black anodized finish looks great and prevents corrosion. Choose from outlets with a 45 degree or 90 degree angle (both swivel 360 degrees before bolts are tightened up).

Product Features:
  • Aluminum Swivel Water Necks for Gen III Hemi Engines
  • Fits All 2003 & Up 5.7L, 2005-2010 6.1L & 2011-up 6.4L Gen III Hemi Engines
  • Black Anodized Finish – For Corrosion Protection & Great Looks
  • Choose from 90 Degree or 45 Degree Water Necks
  • Fits 1-3/4″ Hose
  • Includes (2) M8 x 1.25mm x 30mm Long Bolts
  • Ideal for Engine Swaps & Allows Swivel Adjustment w/ Custom Radiator Hoses
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Carquest Premium – Engine Water Pump: New, Gasket/Seals Included (Part No.T4111)

Engine Water Pump: New, Gasket/Seals Included

from

$67.99
This premium water pump uses new high-quality components and is designed to meet or exceed OE specifications. This pump is 100% tested to ensure quality. Bearings, gaskets, seals, impeller, hub and housing are all designed for long-lasting service life. All necessary gaskets and seals are included.

Product Features:
  • 100% tested for reliable performance
  • Durable housing features precisely machined mounting surface for proper sealing and fitment
  • Equipped with weep chamber or similar feature to help prevent unnecessary replacement
  • Included heavy-duty unitized bearings, pressed-on hubs and optimal impeller clearance for a long-lasting water pump
  • All gaskets or seals necessary for water pump are included
  • This pump is driven by the accessory belt and we recommend replacement if nearing service recommendation
  • This pump is driven by the timing chain; see vehicle manufacturer recommendation for replacement of timing components
  • This pump is driven by the timing belt; see vehicle manufacturer recommendation for replacement of timing components
  • Additional Notes: Includes gasket
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(3 reviews)
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Imperial – Adjustable Thermostatic Fan Control (Part No.226204)

Adjustable Thermostatic Fan Control

from

$70.99
Adjustable Thermostatic Fan Control. 160-210°F; push-in probe. Controls the operating temperature of Imperial electric fans. Operates up to 2 fans.

Product Features:
  • Adjustable thermostatic fan control
  • 160-210°F push-in probe
  • For use with Imperial electric fans
  • Probe installs into radiator fins
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(33 reviews)
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Dorman – Radiator Fan Assembly: Single, Cost Effective and Reliable (Part No.620-055)

Radiator Fan Assembly: Single, Cost Effective and Reliable

from

$133.99
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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(6 reviews)
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Felpro – Engine Water Pump Gasket (Part No.35587)

Engine Water Pump Gasket

from

$6.29
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
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Carquest Premium – Multi-Purpose Relay (Part No.RAA2666)

Multi-Purpose Relay

from

$48.99
Relays are electrical switches used to convert a small electrical load into a circuit capable of handling a high amperage load. Computers and small switches are not designed to carry the higher amperage requirement of a circuit that may have an electric motor, solenoid, or high amperage lighting fixture. Within a relay are contacts that are controlled with electromagnetism, when the circuit switch commands the device on or off, magnetism will pull or release the contact arm closing or opening the contacts within the relay that carry the voltage.

Product Features:
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
  • Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
  • Where applicable, robust circuit board design increases durability due to heat, shock, and random electro-magnetic pulses (EMP) and power spikes.
  • Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
  • 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
  • 100% end-of-line tested to ensure accurate signal output providing product reliability, every time.
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US MOTOR WORKS – Water Pump with Fan Clutch (Part No.MCK1074)

Water Pump with Fan Clutch

from

$85.99
US Motor Works Professional Series Water Pump with Fan Clutch are designed to replace the mechanical components of a cooling system. A proper water pump replacement should include a new fan clutch as the two are connected to the same shaft and work together to move the air and cooling fluid. Replacing one without the other can damage the new part and cause repeat work or engine trouble. This matched set will allow your vehicle continued operation in the demanding environment of today’s engine. All components are brand new and QA inspected for perfect fit and function. Restore your cooling power by installing a US Motor Works Professional Series Water Pump with Fan Clutch.

Product Features:
  • Fan clutch mounts to the water pump and should be replaced at the same time.
  • Matched set for proper water pump or fan clutch replacement
  • Includes mounting hardware, gaskets and accessories as required.
  • Complete mechanical cooling parts replacement
  • Factory tested and 100% new product
  • Meets or exceeds OEM quality
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Victor Reinz – Engine Coolant Outlet Gasket, Engine Coolant Outlet Gasket for Select Chrysler, Jeep and Volkswagen (Part No.71-13567-00)

Engine Coolant Outlet Gasket, Engine Coolant Outlet Gasket for Select Chrysler, Jeep and Volkswagen

from

$9.89
Product Features:
  • Choosing Victor Reinz assures getting OE quality parts in gaskets sets that have the coverage, contents, packaging and electronic cataloging to best meet the needs of the aftermarket.
  • Dana engineering-approved for fit, form and function.
  • Meets or exceeds OE specifications
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Felpro – Engine Coolant Thermostat Gasket (Part No.36093)

Engine Coolant Thermostat Gasket

from

$9.99
Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design to ensure a perfect fit
  • Engineered and manufactured specifically for the repair environment
  • Unsurpassed quality you can trust
  • Validated for fit, form, and function
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Carquest Premium – Radiator Cap: 16 PSI (Part No.10226)

Radiator Cap: 16 PSI

from

$9.99
Crafted to meet the exact specifications set by Original Equipment Manufacturers (OEM), these products are engineered for effortless installation and removal. Constructed from premium-grade components, incorporating proper relief and vacuum valves, they ensure optimal performance even in the most demanding automotive cooling systems. Rigorously quality-tested, these components provide exceptional, out-of-the-box performance and superior durability to meet or exceed the highest standards of today’s vehicles.

Product Features:
  • Maintains proper cooling system pressure
  • Easy installation and removal
  • 100% tested to ensure proper pressure and longevity
  • Meets all OEM specifications
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Crown Auto Jeep Replacmnt – OE Replacement, Single (Part No.J3189874)

OE Replacement, Single

from

$1.99
Crown Automotive continues to be the leader in quality replacement parts for Jeep(R) vehicles. Crown has the largest stock of replacement parts for Jeep(R) vehicles, including factory discontinued parts. In fact, many of the older Jeeps are still on (and off) the road thanks to Crown parts. The Crown line consists of axle, body, brake, clutch, cooling, driveline, electrical, engine, exhaust, fuel, steering, suspension, transmission And transfer case components. Crown Automotive also offers an exclusive line of component kits And accessory products.

Product Features:
  • Leading Manufacturer Of Quality Replacement Parts For Jeep
  • Meets Standards For Quality
  • Crown Automotive Has Consistently Maintained Its Commitment To Offering Only Quality Parts And Exceptional Service
  • Improve The Performance
  • Easy Installation
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Carquest Premium – Universal Fan Clutch (Part No.216071)

Universal Fan Clutch

from

$119.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Carquest.

Product Features:
  • OE performance, fit, and appearance
  • Precision machined
  • Out of box installation
  • Designed, tested, and built by application
  • OE performance, fit, and appearance
  • Precision machined
  • Out of box installation
  • Designed, tested, and built by application
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Carquest Premium – Standard Thermostat: 160 Degrees (Part No.200-160JV)

Standard Thermostat: 160 Degrees

from

$7.99
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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Dorman – Help – Water Pump Inlet Tube (No Gasket Needed) (Part No.56398)

Water Pump Inlet Tube (No Gasket Needed)

from

$22.49
This engine water pump inlet tube is designed to match the fit and function of the original tube on specified applications, and is engineered for reliable performance and durability.

Product Features:
  • Direct replacement – this engine water pump inlet tube is designed to match the fit and function of the original tube on specified applications
  • Restores functionality – reliable replacement for an original part that has failed due to corrosion from heat and water cycling
  • 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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(69 reviews)
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Dorman – Coolant Housing/Water Outlet: with Housing and Gasket, 180 Degree Neck Angle (Part No.902-3010)

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

from

$21.99
This replacement engine coolant thermostat housing is engineered to match the fit and durability of the stock thermostat housing on specified vehicles. It is designed to withstand extreme temperature changes to extend service life.

Product Features:
  • Ideal replacement – this engine coolant thermostat housing directly replaces the original housing on specified vehicle years, makes and models
  • Durable construction – this part is specifically designed to withstand extreme temperature changes and resist cracking and leaking
  • Cost-effective and reliable – offers original manufacturer quality at lower cost than getting replacement at dealer
  • Industry-leading design – professionally engineered by the aftermarket leader in replacement thermostat housings
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Carquest Premium – Coolant Housing/Water Outlet (Part No.CH5357)

Coolant Housing/Water Outlet

from

$21.99
Carquest Premium Coolant Housings are manufactured with OEM quality materials and safety standards by an OE Supplier. This housing will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. The construction of this housing is improved over the OE design to fix and update any issues that the OE design may have had.

Product Features:
  • Easy, one step fit and installation
  • No special tools required
  • Meets or exceeds all OEM standards
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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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Popular 2003 Jeep Wrangler Engine Cooling Parts Categories

Radiators
Radiators
Water Pumps
Water Pumps
Water Pump Inlet Tubes
Water Pump Inlet Tubes
Engine Cooling Fan Controllers
Engine Cooling Fan Controllers
Radiator Fan Clutch
Radiator Fan Clutch
Radiator Caps
Radiator Caps
Thermostats
Thermostats
Engine Cooling Fans
Engine Cooling Fans
Radiator Fan Motors
Radiator Fan Motors
Coolant Reservoirs
Coolant Reservoirs
Coolant Temperature Sensors
Coolant Temperature Sensors
Coolant Reservoir Caps
Coolant Reservoir Caps
Water Outlets
Water Outlets
Radiator Fan Control Relays
Radiator Fan Control Relays
OE Cooling Fan Blades
OE Cooling Fan Blades
Engine Coolant Pipes
Engine Coolant Pipes
Thermostat Housing Gaskets
Thermostat Housing Gaskets
Thermostat Housings
Thermostat Housings
Thermostat Seals
Thermostat Seals
Thermostat and Water Outlet Gaskets
Thermostat and Water Outlet Gaskets
Water Pump Gaskets
Water Pump Gaskets
Radiator Cap Adapters
Radiator Cap Adapters
Water Pump O-Rings
Water Pump O-Rings
Water Pump Housing O-Rings
Water Pump Housing O-Rings
Engine Water Pump with Fan Clutch
Engine Water Pump with Fan Clutch

Most Popular Thermostats for 2003 Jeep Wranglers

Enhance your 2003 Jeep Wrangler with one of the 8 Thermostats we have in stock, starting at just $7.99.
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Carquest Premium Stats – Thermostat (Part No.45209)

Thermostat

from

$11.99
The Superstat has the added features of a heavier frame, spring and heat motor for more control and longer life. Its unique, patented valve promotes extremely fast flow as the thermostat opens to reduce cycling.

Product Features:
  • Direct fit
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(28 reviews)
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Edelbrock – High Performance 180 Degree Thermostat for Improved Engine Efficiency (Part No.8604)

High Performance 180 Degree Thermostat for Improved Engine Efficiency

from

$24.99
Edelbrock thermostats are designed to ensure consistent cooling in high-performance applications. Feature a brass and copper valve assembly with a stainless steel body for durability. This 180 Deg F thermostat is a bolt-on OEM style replacement that measu

Product Features:
  • 53mm Diameter
  • Rated For 180 Degrees
  • High Flow Type
  • OE Style
  • Made in The USA
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Motorad – Engine Coolant Thermostat: With Seal, 195 Degrees (Part No.425-195)

Engine Coolant Thermostat: With Seal, 195 Degrees

from

$26.99
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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Crown Auto Jeep Replacmnt – Oem Replacement (Part No.83501426)

Oem Replacement

from

$14.99
Crown Automotive continues to be the leader in quality replacement parts for Jeep(R) vehicles. Crown has the largest stock of replacement parts for Jeep(R) vehicles, including factory discontinued parts. In fact, many of the older Jeeps are still on (and off) the road thanks to Crown parts. The Crown line consists of axle, body, brake, clutch, cooling, driveline, electrical, engine, exhaust, fuel, steering, suspension, transmission And transfer case components. Crown Automotive also offers an exclusive line of component kits And accessory products.

Product Features:
  • Leading Manufacturer Of Quality Replacement Parts For Jeep
  • Meets Standards For Quality
  • Crown Automotive Has Consistently Maintained Its Commitment To Offering Only Quality Parts And Exceptional Service
  • Improve The Performance
  • Easy Installation
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Edelbrock – Edelbrock High Performance Thermostat (53mm) – 160 Deg (Part No.8603)

Edelbrock High Performance Thermostat (53mm) - 160 Deg

from

$24.99
Edelbrock thermostats are designed to ensure consistent cooling in high-performance applications. Feature a brass and copper valve assembly with a stainless steel body for durability. This 160 Deg F thermostat is a bolt-on OEM style replacement that measures 53mm.
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Carquest Premium – Standard Thermostat: 205 Degrees (Part No.200-205JV)

Standard Thermostat: 205 Degrees

from

$32.99
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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Carquest Premium – Standard Thermostat: 180 Degrees (Part No.200-180JV)

Standard Thermostat: 180 Degrees

from

$32.99
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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Carquest Premium – Standard Thermostat: 160 Degrees (Part No.200-160JV)

Standard Thermostat: 160 Degrees

from

$7.99
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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Best-Selling 2003 Jeep Wrangler Radiators

Upgrade your Wrangler with one of our 6 best-selling Radiators, earning an average 4 stars rating across 155 reviews.
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Carquest Premium – Radiator: With Transmission Oil Cooler (Part No.431512)

Radiator: With Transmission Oil Cooler

from

$182.99
Reach Radiators offer one of the largest product ranges in the aftermarket, covering more than 95% of the popular automotive and light truck applications. Reach Radiators meet or exceed original equipment specifications, ensuring that products fit and perform just as well or better than the original parts, providing you peace of mind.

Product Features:
  • Our B-type tubes feature central reinforcement to provide greater tolerance to pressure. Stronger tube design means drastically reduced probability of tube failure.
  • Our deep extrusion header provides a stronger tube to header joint which is more resistant to the effects of vibration and thermal tube expansion, virtually eliminating tube to header leaks.
  • Our fin edges are folded for increased stability and heat disbursement properties.
  • Our included “multi-fit” attachments allow one radiator to cover multiple vehicle applications without sacrificing OE fit. This results in wider vehicle coverage with substantially less inventory.
  • Thermal expansion cuts allow for longer life and reduce failure rates by allowing improved core expansion and contraction during normal heat cycles.
  • We design and manufacture all our radiators to meet or even exceed Original Equipment specifications. We take pride in producing the most reliable replacement parts in the market.
  • We use longer header tabs for increased pressure resistance. This reduces the potential for tank to header leaks.
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(141 reviews)
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Carquest Premium – Radiator (Part No.431238)

Radiator

from

$175.99
Carquest Premium Radiators offer one of the largest product ranges in the aftermarket, covering more than 95% of the popular automotive and light truck applications. Carquest Premium Radiators meet or exceed original equipment specifications, ensuring that products fit and perform just as well or better than the original parts, providing you peace of mind.

Product Features:
  • Our B-type tubes feature central reinforcement to provide greater tolerance to pressure. Stronger tube design means drastically reduced probability of tube failure.
  • Our deep extrusion header provides a stronger tube to header joint which is more resistant to the effects of vibration and thermal tube expansion, virtually eliminating tube to header leaks.
  • Our fin edges are folded for increased stability and heat disbursement properties.
  • Our included “multi-fit” attachments allow one radiator to cover multiple vehicle applications without sacrificing OE fit. This results in wider vehicle coverage with substantially less inventory.
  • Thermal expansion cuts allow for longer life and reduce failure rates by allowing improved core expansion and contraction during normal heat cycles.
  • We design and manufacture all our radiators to meet or even exceed Original Equipment specifications. We take pride in producing the most reliable replacement parts in the market.
  • We use longer header tabs for increased pressure resistance. This reduces the potential for tank to header leaks.
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(14 reviews)
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KAI – Radiator (Part No.RAD2101)

Radiator

from

$226.99
New Platinum Pro Radiator, 4 Cylinder And 6 Cylinder Engines

Product Features:
  • 4 Cylinder And 6 Cylinder Engines, Made Of Plastic and Aluminum
  • Meets All Federal Motor Safety Standards
  • No Drilling Needed For Installation
  • No Modifications Needed For Installation
  • Direct Fit Replacement For Your Vehicle
  • Same Form Fit And Function As OE
  • Warranty: 5 Year, Limited
  • Radiator Cap Not Included
  • Check Out The Large Selection Of Parts Available For Your Vehicle
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aFe POWER – BladeRunner Street Series High Capacity Aluminum Radiator (Part No.46-52101)

BladeRunner Street Series High Capacity Aluminum Radiator

from

$556.99
BladeRunner Street Series High Capacity Aluminum Radiator
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Crown Auto Jeep Replacmnt – 26" L X 26" H X 5"D Dimension, 18.5"L X 22" H Core Dimension, Two Core Row (Part No.52080183)

26" L X 26" H X 5"D Dimension, 18.5"L X 22" H Core Dimension, Two Core Row

from

$313.99
Crown Automotive continues to be the leader in quality replacement parts for Jeep(R) vehicles. Crown has the largest stock of replacement parts for Jeep(R) vehicles, including factory discontinued parts. In fact, many of the older Jeeps are still on (and off) the road thanks to Crown parts. The Crown line consists of axle, body, brake, clutch, cooling, driveline, electrical, engine, exhaust, fuel, steering, suspension, transmission And transfer case components. Crown Automotive also offers an exclusive line of component kits And accessory products.

Product Features:
  • Manufactured From High Quality Material
  • Engineered To The Specifications
  • Meets The Quality Standards
  • Designed For Performance And Durability
  • Easy To Install
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CSF Cooling – Radiator: 19-5/8" L x 18-1/8" H x 1.25" D Core, Single Row, Down Flow, Aluminum (Part No.3244)

Radiator: 19-5/8" L x 18-1/8" H x 1.25" D Core, Single Row, Down Flow, Aluminum

from

$179.99
CSF factories are ISO/TSO certified. CSF Radiators are designed and built to high performance standards and sold worldwide for over 50 Years – over 30 Million Units Sold. Our Radiators are carefully engineered and Wind Tunnel Tested in laboratory for Cooling Performance Validation. We have over 10,000 different models of Radiators that we manufacture and supply for all the leading brands of vehicles on the road.

Product Features:
  • OEM Specified Plastic Tank-Aluminum Core Construction
  • Tanks Are Made From Virgin Grade Engineered Plastic Resins, Which Are “Glass Filled” For Added Strength And Durability
  • Gaskets Are Made From Special Grade “EPDM” Rubber To Withstand Extreme Temperatures Of Up To -120 Degree Fahrenheit
  • Tubes – Welded Type Or Latest Generation “B-Tube” Design
  • Fins (Heart Of Radiator) – High Performance “Multi-Louvered Design” – OEM Spec
  • 100 Percent Leak Tested Before Leaving Factory At 150 Percent Of Operating Pressure
  • Drop-In Fit
  • High Performance Transmission Cooler With Special Built-In Turbulator, When Applicable
  • All Components Are Installed, Torqued And Tested On Radiator During Assembly
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Top-Quality Water Pumps for 2003 Jeep Wranglers

Choose a high-quality OEM or aftermarket Water Pump for Jeep Wranglers and enjoy top-notch performance from $41.99.
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Driveworks Water Pumps – Water Pump: New, Installation Gasket Included (Part No.58-542)

Water Pump: New, Installation Gasket Included

from

$41.99
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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(2 reviews)
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Carquest Premium – Engine Water Pump: New, Gasket/Seals Included (Part No.T2255)

Engine Water Pump: New, Gasket/Seals Included

from

$89.99
This premium water pump uses new high-quality components and is designed to meet or exceed OE specifications. This pump is 100% tested to ensure quality. Bearings, gaskets, seals, impeller, hub and housing are all designed for long-lasting service life. All necessary gaskets and seals are included.

Product Features:
  • 100% tested for reliable performance
  • Durable housing features precisely machined mounting surface for proper sealing and fitment
  • Equipped with weep chamber or similar feature to help prevent unnecessary replacement
  • Included heavy-duty unitized bearings, pressed-on hubs and optimal impeller clearance for a long-lasting water pump
  • All gaskets or seals necessary for water pump are included
  • This pump is driven by the accessory belt and we recommend replacement if nearing service recommendation
  • This pump is driven by the timing chain; see vehicle manufacturer recommendation for replacement of timing components
  • This pump is driven by the timing belt; see vehicle manufacturer recommendation for replacement of timing components
  • Additional Notes: Includes gasket
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(115 reviews)
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Driveworks Water Pumps – Water Pump: New, Installation Gasket Included (Part No.58-551)

Water Pump: New, Installation Gasket Included

from

$60.99
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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(115 reviews)
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Carquest Premium – Engine Water Pump: New, Gasket/Seals Included (Part No.T1193)

Engine Water Pump: New, Gasket/Seals Included

from

$62.99
This premium water pump uses new high-quality components and is designed to meet or exceed OE specifications. This pump is 100% tested to ensure quality. Bearings, gaskets, seals, impeller, hub and housing are all designed for long-lasting service life. All necessary gaskets and seals are included.

Product Features:
  • Built to meet or exceed OE fit, form and function
  • All components necessary for installation are supplied with pump
  • 100% tested for reliable performance
  • Follow all enclosed instructions to maximize pump life and validate warranty
  • Additional Notes: Includes gasket
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(13 reviews)
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AISIN – Engine Water Pump Assembly (Part No.WPCH-712V)

Engine Water Pump Assembly

from

$128.99
OE Engineered and Manufactured Water Pumps

Product Features:
  • Aluminum Die-Cast for Weight Reduction and Added Strength
  • From the Largest OE Water Pump Manufacturer in the World
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AISIN – Engine Water Pump Assembly (Part No.WPCH-717V)

Engine Water Pump Assembly

from

$94.99
OE Engineered and Manufactured Water Pumps

Product Features:
  • Aluminum Die-Cast for Weight Reduction and Added Strength
  • From the Largest OE Water Pump Manufacturer in the World
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Top Picks for 2003 Jeep Wrangler Coolant Reservoir Caps

Invest in one of our 3 durable Coolant Reservoir Caps for your 2003 Jeep, knowing you’re getting trusted brands and expert craftsmanship.
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Dorman – Help – Engine Coolant Reservoir Cap: Flip Top, Plastic, 1 Pack (Part No.54203)

Engine Coolant Reservoir Cap: Flip Top, Plastic, 1 Pack

from

$21.99
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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(1 reviews)
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Carquest Premium – Radiator Cap: 18 PSI (Part No.10234)

Radiator Cap: 18 PSI

from

$6.79
Crafted to meet the exact specifications set by Original Equipment Manufacturers (OEM), these products are engineered for effortless installation and removal. Constructed from premium-grade components, incorporating proper relief and vacuum valves, they ensure optimal performance even in the most demanding automotive cooling systems. Rigorously quality-tested, these components provide exceptional, out-of-the-box performance and superior durability to meet or exceed the highest standards of today’s vehicles.

Product Features:
  • Maintains proper cooling system pressure
  • Easy installation and removal
  • 100% tested to ensure proper pressure and longevity
  • Meets all OEM specifications
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(118 reviews)
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Dorman – Help – Engine Coolant Reservoir Cap: Flip Top, Polypropylene, 1 Pack (Part No.54201)

Engine Coolant Reservoir Cap: Flip Top, Polypropylene, 1 Pack

from

$14.49
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
See More

(15 reviews)
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Our Top-Rated Thermostat and Water Outlet Gaskets for 2003 Jeep Wranglers

Make a smart move for your 2003 Jeep Wrangler with our Thermostat and Water Outlet Gasket for $8.29.
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Felpro – Engine Coolant Thermostat Housing Gasket (Part No.35630)

Engine Coolant Thermostat Housing Gasket

from

$8.29
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 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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(66 reviews)
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Top-Rated Engine Cooling Part Brands For Your 2003 Jeep Wrangler

When it comes to finding the perfect Engine Cooling Part for your 2003 Jeep Wrangler, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 18 trusted brands. We carry the most popular Engine Cooling Part brands including , Carquest Premium, and Dorman, and more, all known for their exceptional customer ratings (average brand rating of 4.5 stars) and competitive prices, as low as $6.79. Purchasing a Engine Cooling Part from us here at Advance Auto Parts is a smart move for both you and your 2003 Jeep Wrangler, providing peace of mind with parts that meet or exceed OEM standards.

Popular DriveWorks 2003 Jeep Wrangler Engine Cooling Parts

If you’re looking for a top-quality Engine Cooling Part for your 2003 Jeep Wrangler, Advance Auto Parts has exactly what you need with our selection of DriveWorks Engine Cooling Parts. We have 2 DriveWorks Engine Cooling Parts in stock for this fitment, all known for their durability and precision fit. With prices starting at just $41.99 and an average cost of $51.49, you’ll find the perfect Engine Cooling Part for your needs and budget. DriveWorks Engine Cooling Parts for the 2003 Jeep Wrangler come highly rated, with over 117 customer reviews and an impressive average rating of 4.5 stars. Choosing a DriveWorks Engine Cooling Part from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Water Pump: New, Installation Gasket Included
from $60.99
(115)
Water Pump: New, Installation Gasket Included
“Cooling”
Water Pump: New, Installation Gasket Included
from $41.99
(2)
Water Pump: New, Installation Gasket Included
“Part worked good no complaints.”

Top-Quality Carquest Premium 2003 Jeep Wrangler Engine Cooling Parts

For those in search of a high-quality Engine Cooling Part for their 2003 Jeep Wrangler, 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 $6.79, with an average price of $37.92, giving you a range of options to suit your budget. Backed by over 235 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: 18 PSI
from $6.79
(118)
Radiator Cap: 18 PSI
“Purchased this for my littler sisters 2012 Jeep Grand Cherokee Laredo 3.6L V6. I had noticed a very small amount of steam making its way out of the or”
Engine Water Pump: New, Gasket/Seals Included
from $89.99
(115)
Engine Water Pump: New, Gasket/Seals Included
“Good buy”
Engine Coolant Water Outlet
from $16.99
(2)
Engine Coolant Water Outlet
“great product”

FAQs for 2003 Jeep Wrangler Engine Cooling Parts

What are the best-selling Engine Cooling Parts for 2003 Jeep Wranglers?

Out of 65 Engine Cooling Parts that fit 2003 Jeep Wranglers, the following parts are the top sellers:

What’s the price range for 2003 Jeep Wrangler Engine Cooling Parts?

The prices of Engine Cooling Parts for the 2003 Jeep Wrangler range from $1.99 up to $556.99 for the most premium parts.

What is the average price of an Engine Cooling Part for a 2003 Jeep Wrangler?

The average price for Engine Cooling Parts for the 2003 Jeep Wrangler is $72.94. 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 Jeep Wrangler model years?

Yes, we carry Engine Cooling Parts for 37 model years of Jeep Wranglers between 1987 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 Jeep Wrangler?

The cheapest 2003 Jeep Wrangler Engine Cooling Parts we carry are:

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

Yes. We stock Engine Cooling Parts for 1 other popular 2003 Jeep models. Some of the most popular are 2003 Grand Cherokee Engine Cooling Parts and 2003 Liberty Engine Cooling Parts.

What are the top-rated Engine Cooling Parts that fit the 2003 Jeep Wrangler?

The one 2003 Jeep Wrangler Engine Cooling Part we have in stock is the OE Replacement, Single. It costs $1.99.

What types of Engine Cooling Parts do you sell for my 2003 Jeep Wrangler?

As of 6/2/26, these are some of the most in-demand types of Engine Cooling Parts for a 2003 Jeep Wrangler:

Can I get help with 2003 Jeep Wrangler 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 Jeep Engine Cooling Parts and more.

What is your return policy for Jeep Wrangler Engine Cooling Parts?

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

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