2003 Jeep Wrangler Engine Cooling Parts

Essential 2003 Jeep Wrangler Engine Cooling Parts

Factory Air – Standard Relay (Part No.35928)

Standard Relay

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$23.29
High quality OE replacement part with all components needed to complete the job

Product Features:
  • Precision engineered
  • OE style molded connectors
  • Quality contacts ensure proper conductivity
  • Vehicle specific applications
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Dorman – Help – Water Pump Inlet Tube (No Gasket Needed) (Part No.56398)

Water Pump Inlet Tube (No Gasket Needed)

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$20.49
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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Carquest Premium – Premium Engine Coolant Temperature Sensor WTA2321 (Part No.WTA2321)

Premium Engine Coolant Temperature Sensor WTA2321

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$27.99
Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.

Product Features:
  • The engine coolant temperature sensor is located anywhere within the engine cooling system and contains a thermistor that changes in resistance value as the thermistors ambient temperature changes. The engine coolant temperature sensor is a primary input
  • Lead frame terminal size and location determined using image dimension measuring system or 3D laser scanner.
  • Thermally conductive grease within the housing providing the most accurate temperature transfer from the engine to the thermistor.
  • Plated brass or aluminum housings to prevent housing corrosion, ensures effective heat distribution to thermal element, and ensure a secure and leak-free thread mount.
  • Computer-Aided Design (CAD), laser scanning and 3D printing “ utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) “ in the connector terminal design process ensures speed-to-market and a precise connector fit guaranteed.
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Flex A Lite – Black Magic Electric Fan (Part No.180)

Black Magic Electric Fan

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$367.99
Black Magic Electric Fan

Dorman – Radiator Fan Assembly: Single, Cost Effective And Reliable (Part No.620-055)

Radiator Fan Assembly: Single, Cost Effective And Reliable

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$134.99
This engine cooling fan assembly is precision-engineered to match the fit and performance of the stock radiator fan on specific vehicle years, makes and models. It has been rigorously tested to ensure it cools as effectively as the original part.

Product Features:
  • Ideal replacement – this engine cooling fan assembly was precision-engineered to match the fit and performance of the stock radiator fan assembly on specific vehicles
  • Complete package – assembly is designed with the same materials and components as the original part
  • Quality assured – motors are tested in laboratory settings to ensure performance
  • Cost effective and reliable – trustworthy manufacturing for far less than same part at the dealership
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Carquest Premium – Universal Fan Clutch – 7" Thermal Heavy Duty (Part No.215149)

Universal Fan Clutch - 7" Thermal Heavy Duty

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$72.99
Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. The fan clutch is the component of the cooling system that varies the fan speed to meet the cooling needs of the engine. The fan clutch provides high airflow volume and, by only operating the fan as needed, promotes good fuel economy. CARQUEST fan clutches are designed to meet OE performance specifications.

Product Features:
  • CARQUEST Premium Fan Clutch
  • 7″ thermal heavy-duty
  • Designed, tested and built by application
  • OE performance, fit and appearance
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Carquest Premium – Coolant Housing/Water Outlet (Part No.85357)

Coolant Housing/Water Outlet

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$37.99
We are proud to offer this CARQUEST product line: CARQUEST Water Outlets. Our products are engineered and tested to provide years of trouble free operation and designed to be hassle free OE replacement part that meets and/or exceeds OE standards. Backed by over 50 years of mobile temperature control experience, fix it once and fix it right with CARQUST Water Outlets and Thermostat Housings.

Product Features:
  • Meets and/or exceeds OEM standard
  • Includes quality gasket or O-ring to ensure proper seal (where applicable)
  • 100% virgin resin material to insure durability
  • 100% leak tested
  • Direct-fit replacement for ease of installation
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Dorman – Coolant Housing/Water Outlet: With Housing, 30 Degree Neck Angle (Part No.902-3038)

Coolant Housing/Water Outlet: With Housing, 30 Degree Neck Angle

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$28.99
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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Dorman – Cooling Fan Blade (Part No.G50503185295DOR)

Cooling Fan Blade

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$152.62
Cooling Fan Blade

Mahle – Water Pump Gasket (Part No.G3040214571MAH)

Water Pump Gasket

from

$10.02
Water Pump Gasket

Felpro – THERMOSTAT GASKET (Part No.35651)

THERMOSTAT GASKET

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$8.79
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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Dorman – Help – Radiator Drain Cocks (Part No.61121)

Radiator Drain Cocks

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$7.49
This radiator drain petcock is a direct replacement for the original equipment plug that may have deteriorated or corroded. Made of quality materials, this petcock is engineered to strict standards for durable use over time.

Product Features:
  • Direct replacement – this radiator drain petcock matches the fit and function of the original equipment part
  • Durable construction – this part is made of quality materials for a long service life
  • Saves money – offers original equipment quality at a competitive price
  • Quality assured – this petcock has undergone virtual testing to assure proper fit and function
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Dorman – Thermostat Assembly: Includes Housing, Thermostat, and Gasket, 203 Degrees (Part No.902-852)

Thermostat Assembly: Includes Housing, Thermostat, and Gasket, 203 Degrees

from

$37.99
This replacement engine coolant thermostat housing assembly is engineered to match the fit and durability of the stock housing assembly on specified vehicles. It is designed to withstand extreme temperature changes to extend service life.

Product Features:
  • Ideal replacement – this engine coolant thermostat housing assembly directly replaces the original water outlet on specified vehicle years, makes and models
  • Durable construction – this part is specifically designed to withstand extreme temperature changes and resist cracking and leaking
  • Cost-effective and reliable – offers original manufacturer quality at lower cost than getting replacement at dealer
  • Industry-leading design – professionally engineered by the aftermarket leader in replacement thermostat housing assemblies
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Carquest Premium – Engine Cooling Fan Module (Part No.ACC1313)

Engine Cooling Fan Module

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$94.99
All modern vehicles consist of several independent operating systems controlled by a main system processor with independent sub-processors. The sub-processors provide class 2 serial information data to the main processor while handling the operation of the system and carry the circuit load to protect the main operating system. When replacing any level processor programming may be needed to enter the unit into the vehicles main operating system.

Product Features:
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
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Carquest Premium – Radiator Cap Tester Adapter (Part No.12552)

Radiator Cap Tester Adapter

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$14.29
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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Permatex – The Right Stuff: Grey, 1 Minute Gasket Maker, 10 OZ (Part No.34310)

The Right Stuff: Grey, 1 Minute Gasket Maker, 10 OZ

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$38.99
Permatex’s The Right Stuff 1 Minute Series offers the fastest return to service in just 1 minute! This leak-proof, elastomeric “Formed-in-place” material is more reliable and longer lasting than pre-cut gaskets. It is blowout resistant and protects against leaks and seepage caused by vibration and thermal expansion. The Right Stuff 1 Minute Grey is specified for high torque and high vibration applications and is formulated to meet or exceed performance standards for long-term sealability, durability and handling.

Product Features:
  • Designed to perform under higher torque loads associated with engines having closely spaced bolt patterns
  • Sensor-safe, non-corrosive, RTV silicone
  • Protects against leaks caused by vibration and thermal expansion
  • Meets performance specs of OE silicone gaskets
  • Quickly returns vehicle to service in just 1 minute
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Felpro – O-RING (Part No.35861)

O-RING

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$2.99
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design to ensure a perfect fit
  • Engineered and manufactured specifically for the repair environment
  • Unsurpassed quality you can trust
  • Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
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Carquest Premium – Radiator Cap: 18 PSI (Part No.10334)

Radiator Cap: 18 PSI

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$10.49
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:
  • Safety lever to vent coolant pressure before removal
  • 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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Felpro – Engine Water Pump Gasket (Part No.35586)

Engine Water Pump Gasket

from

$2.29
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design
  • Manufactured for the sealing repair environment
  • Validated for fit, form, and function
  • Quality that you can trust
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Omix – Fan Clutch (Part No.17105.12)

Fan Clutch

from

$127.99
Direct OE replacement Jeep parts and accessories built to the original specifications by Omix-ADA. Limited five year Manufacturer’s warranty.

Product Features:
  • OE Style
  • Direct Fit
  • Metal
  • Highly Durable
  • Limited 5 Year Warranty
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FAE – Engine Coolant Temperature Sensor (Part No.C6020175809FAE)

Engine Coolant Temperature Sensor

from

$42.94
The FAE Engine Coolant Temperature Sensor is an ideal high quality aftermarket replacement that is manufactured to meet or exceed OE specifications for fit, form, and function.

Product Features:
  • Premium aftermarket replacement
  • Provides performance and dependability
  • Manufactured to meet OE specifications
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Carquest Premium – Reservoir Cap (Part No.T114)

Reservoir Cap

from

$26.49
Reservoir Cap

Mahle – Water Pump Hsng Gask (Part No.G3031217552MAH)

Water Pump Hsng Gask

from

$6.13
Water Pump Hsng Gask

Mr. Gasket – Thermocap Radiator Cap (Part No.2471S)

Thermocap Radiator Cap

from

$47.99
Knowing your coolant temperature can help to prevent burn injuries. Thermocap Cap, with its built-in calibrated thermometer, indicates the coolant temperature. This is useful information prior to cap removal. Never attempt to remove Thermocap Cap when the coolant temperature is very hot. The escaping hot coolant and steam may burn you. Reclamation valve works great with your coolant recovery system. Your radiator can reclaim coolant from your overflow bottle. Wide 30 degree to 270 degree F temperature range. Calibrated in centigrade and Fahrenheit. Color-coded temperature ranges.

Product Features:
  • Indicates Coolant Temperature
  • Helps to Prevent Injuries from coolant or steam burns
  • Integrated Coolant Reclamation Valve
  • Improves Underhood Appearance
  • Fahrenheit and centigrade readings
  • Various valve pressures available
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Dorman – Non-Pressurized Coolant Reservoir: Clear, Plastic, Original Equipment Replacement (Part No.603-773)

Non-Pressurized Coolant Reservoir: Clear, Plastic, Original Equipment Replacement

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$41.99
This replacement engine coolant reservoir is manufactured from quality materials to withstand the stresses of underhood heat and engine vibration. It is engineered and manufactured to match the fit and function of the original part.

Product Features:
  • Direct replacement – this engine coolant reservoir matches the fit and function of the original part
  • Ideal solution – engineered for a seamless installation
  • Durable construction – manufactured from quality materials to withstand underhood heat and vibration
  • Trustworthy design – backed by 100 years of automotive aftermarket experience
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Omix – Radiator Fan Shroud (Part No.17102.05)

Radiator Fan Shroud

from

$99.99
Direct OE replacement Jeep parts and accessories built to the original specifications by Omix-ADA. Limited five year Manufacturer’s warranty.

Product Features:
  • OE Style
  • Direct Fit
  • Increase The Performance Of Your Cooling System
  • Limited 5 Year Warranty
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Driveworks Water Pumps – Water Pump: New, Installation Gasket Included (Part No.58-551)

Water Pump: New, Installation Gasket Included

from

$62.99
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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Omix – Radiator (Part No.17101.13)

Radiator

from

$399.99
Is your radiator leaking? Over time they will deteriorate. It’s easier to replace it now than have a roadside or trail breakdown in the future. Get a high quality radiator for your Jeep from Omix-ADA.

Product Features:
  • OE Style
  • Direct Fit
  • Aluminum Core; Plastic Tank
  • 1 Core
  • Limited 5 Year Warranty
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2003 Jeep Wrangler Engine Cooling Parts

Maybe you’re in the middle of a full rebuild of that 2003 Jeep Wrangler. Maybe you just need a couple of Engine Cooling Parts. Either way, Advance Auto Parts has 82 different Engine Cooling Parts in our inventory ranging from $2.29 to $399.99. That means you can find the exact parts or products you need to keep that 2003 Jeep Wrangler running smoothly.

Engine Cooling Parts are only as good as their brand. We stock 23 different brands to make sure you have plenty of trusted parts to choose from for your 2003 Jeep Wrangler. Permatex, Carquest Premium, and Felpro are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

We know you’ll find the perfect Engine Cooling Parts for your 2003 Jeep Wrangler, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 6,518 reviews in this category, some of the top rated parts include Water Pump: New, Installation Gasket Included with 4.3 stars and Water Pump Inlet Tube (No Gasket Needed) with 4.6 stars.

So if you’re in the market for aftermarket Engine Cooling Parts to keep your 2003 Jeep Wrangler rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

Engine Cooling Parts Brands To Make Your 2003 Jeep Wrangler Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 2003 Jeep Wrangler demands trusted brand parts and products to keep it running. Many trusted brands of Engine Cooling Parts make up Advance Auto Parts’ inventory, and all are ready to help make your Wrangler the best it can be. Be sure to browse some of our top Engine Cooling Parts brands and parts.

Popular Carquest Engine Cooling Parts

We carry Carquest parts in our stock across Radiator Fan Control Relays categories, plus more. For a 2003 Jeep Wrangler, our most popular Carquest Engine Cooling Parts include:
Engine Cooling Fan Motor Relay
from $66.99
(9)
Engine Cooling Fan Motor Relay
Radiator Fan Control Relays

FAQs for 2003 Jeep Wrangler Engine Cooling Parts

What are the most purchased Engine Cooling Parts for the 2003 Jeep Wrangler?

Out of 82 Engine Cooling Parts for the 2003 Jeep Wrangler, the most popular in our inventory are:
Water Pump & Thermostat RTV Silicone Gasket Maker, 0.5 OZ
from $6.99
(288)
Water Pump & Thermostat RTV Silicone Gasket Maker, 0.5 OZ
Engine Water Pump Inlet Pipe Gaskets
Sensor-Safe, High-Torque RTV Silicone Gasket Maker
from $11.49
(95)
Sensor-Safe, High-Torque RTV Silicone Gasket Maker
Water Pump Housing Gaskets
Engine Coolant Thermostat Housing Gasket
from $6.79
(66)
Engine Coolant Thermostat Housing Gasket
Thermostat and Water Outlet Gaskets

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

Top-rated Engine Cooling Parts for your 2003 Jeep Wrangler based on customer reviews/ratings are:
Water Pump: New, Installation Gasket Included
from $62.99
(115)
Water Pump: New, Installation Gasket Included
“Easy replacement, exact fit!”
Water Pump Inlet Tube (No Gasket Needed)
from $20.49
(69)
Water Pump Inlet Tube (No Gasket Needed)
“perfect fit”
Coolant Housing/Water Outlet: With Housing, 95 Degree Neck Angle
from $23.49
(59)
Coolant Housing/Water Outlet: With Housing, 95 Degree Neck Angle
“fit and performs right.”