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Jeep Wrangler Radiators

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Jeep Wrangler Radiators

The Jeep Wrangler is a great “get away from it all” vehicle, thanks to the trail-crawling capabilities built in at the factory, but it does have limits. Tackling extra-steep...

The Jeep Wrangler is a great “get away from it all” vehicle, thanks to the trail-crawling capabilities built in at the factory, but it does have limits. Tackling extra-steep terrain can make your engine run hot, and at low speeds, that heat is harder to get rid of. Add extra weight from camping or overlanding gear, plus bigger, heavier wheels and tires, and you have a recipe for overheating.

Whether your classic YJ or TJ radiator has seen better days, or you’re ready to upgrade your JK or JL for off-road adventure, you can find the stock-replacement or performance radiator you need right here at Summit Racing Equipment.

The Jeep Wrangler is a great “get away from it all” vehicle, thanks to the trail-crawling capabilities built in at the factory, but it does have limits. Tackling extra-steep terrain can make your engine run hot, and at low speeds, that heat is harder to get rid of. Add extra weight from camping or overlanding gear, plus bigger, heavier wheels and tires, and you have a recipe for overheating.

Whether your classic YJ or TJ radiator has seen better days, or you’re ready to upgrade your JK or JL for off-road adventure, you can find the stock-replacement or performance radiator you need right here at Summit Racing Equipment.

What’s A Radiator?

The radiator is where your engine eliminates heat. Your water pump circulates water (or coolant) through your engine, where it absorbs heat, and then sends it to the radiator, usually located in front of the engine. The coolant passes through a system of thin-wall tubes in the radiator core. Heat dissipates from the coolant through the tube walls, is then conducted to fins in contact with the tubes, and finally the heat is transferred to the air passing through the fins.

Radiator designs and materials have evolved over the years. Here’s a brief summary:

  • Copper-brass was once the standard tube and fin material, but nowadays most radiators are aluminum. The lighter material allows manufacturers to include more rows of tubes and more fins for increased cooling.

  • Older radiators had the tubes oriented in a “downflow” (up-and-down) pattern, but shorter grilles made “crossflow” (side-to-side) designs more popular.

  • Water normally boils at 212°F, and if water is boiling in your cooling system, it’s no longer able to absorb heat from the engine. Pressurizing the cooling system raises the boiling point (about 3°F for every 1 psi), allowing the coolant to transfer heat more efficiently. Your humble radiator cap maintains the proper pressure.

  • Radiators have side tanks to help manage the flow of coolant. Stock tanks are usually plastic, while performance and off-road radiators have aluminum ones.

Common Cooling Issues

  • If your Jeep Wrangler starts leaking coolant, the radiator is just one possible culprit. Be sure to check all your hoses, fittings, the water pump, radiator cap, and thermostat housing. The fix may be less expensive than a replacement radiator!

  • If your coolant is topped off but your Wrangler is overheating, it might be a problem with airflow or coolant circulation. Check to make sure your fans are operating properly, especially if your Jeep is overheating at idle. Circulation can be affected by air trapped in the system, a faulty coolant pump, or by a restriction caused by external damage or internal build-up of corrosion or sediment.

Stock Replacement

Summit Racing Equipment makes it easy to replace your worn out or damaged Wrangler radiator. Just use our handy Make/Model search tools to find a brand-new radiator that fits just like the original equipment. Jeeps with manual transmissions may have different radiators than automatics, so be sure to double-check your application.

Cooler than Cool

There are several good reasons to upgrade your Jeep Wrangler’s radiator:

  • Engine upgrades (like superchargers or turbochargers), or a bigger engine.

  • Increased engine load from powering electronics, or using your vehicle for more demanding tasks, like off-roading or towing.

  • Increased vehicle weight from wheels and tires, winches, or camping/overlanding gear.

  • Low-speed operation, such as rock crawling or vehicle recovery.

Performance radiators usually improve cooling by increasing their effective surface area through extra rows of tubes, or using space the factory left open.

Need help picking the best performance radiator for your Wrangler YJ, TJ, JK, or JL? Be sure to check out our articles on the subject at On All Cylinders, and talk to other Jeep owners with similar projects. There are plenty of your fellow enthusiasts right here at Summit Racing Equipment, too—give us a call or chat online!

Individual Parts

Results 1 - 25 of 107

Radiator, Performance Fit, 2-Row, Aluminum, Polished, Jeep, Wrangler, YJ, Each

Part Number: SUM-384047

4.29 out of 5 stars ( 51 )

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Radiator, Performance, Aluminum, Polished, Crossflow, XD Extruded Core, 2 Row, Jeep. Each

Part Number: RAD-MOJ995XD

5.0 out of 5 stars ( 3 )

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Radiator, Aluminum, Crossflow, with 19 psi Cap and Magnetic Drain Plug, V6, 3.8L, 3.6L, JK, Wrangler, Jeep, Each

Part Number: MIO-MMRADWRA07V2

Not Yet Reviewed

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Radiator, BladeRunner Street Series, Crossflow, Aluminum, Jeep JK, Each

Part Number: AFE-46-52001

3.75 out of 5 stars ( 4 )

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Radiator, Aluminum, Downflow, Jeep, Each

Part Number: MIO-MMRAD-WRA-87

3.56 out of 5 stars ( 18 )

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Radiator, Performance Fit, Aluminum, Natural, Hemi Conversion, Jeep, JK, V8, Each

Part Number: SUM-380467

4.67 out of 5 stars ( 3 )

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Radiator, Exact-Fit, Jeep, JK Series, OEM 6 Cylinder, Fits Manual and Automatic, Aluminum, Crossflow, 1-Row, Each

Part Number: GRI-5-00152

3.88 out of 5 stars ( 8 )

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Radiator, Racing, Aluminum, Polished, Jeep, JK Wrangler, Each

Part Number: CSF-7036

4.0 out of 5 stars ( 2 )

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Radiator, Aluminum, Downflow, Exact Fit, Jeep, Each

Part Number: GRI-5-70032

3.69 out of 5 stars ( 16 )

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Radiator, Performance Fit, Aluminum, Natural, Jeep, Engine Swap, Chevy V8, Downflow, Each

Part Number: SUM-380464

4.78 out of 5 stars ( 18 )

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Radiators, Downflow, Aluminum/Plastic, Natural, Transmission Cooler, Jeep, 2.4L, 2.5L, 4.0L, Each

Part Number: DNP-221-9234

5.0 out of 5 stars ( 2 )

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Radiator, OE Replacement, Aluminum, Natural, Jeep, JK Wrangler, Each

Part Number: CSF-3466

3.8 out of 5 stars ( 5 )

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Radiator, Performance, Aluminum, Polished, Crossflow, XD Extruded Core, 2 Row, Jeep. Each

Part Number: RAD-MOJ996XD

2.0 out of 5 stars ( 1 )

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Radiator, Performance Fit, Aluminum, Crossflow, 2-Row, Jeep, Each

Part Number: GRI-8-00169

5.0 out of 5 stars ( 9 )

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Radiator, Performance, Crossflow, 3 Rows, Aluminum, Natural, Jeep, Chevy Small Block LS, Each

Part Number: MIO-MRADWRAV887X

3.0 out of 5 stars ( 2 )

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Radiator, Performance, Crossflow, Aluminum, Polished, 2-row, Jeep, Engine Swap, Each

Part Number: RAD-MOJ995-5

1.75 out of 5 stars ( 4 )

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Radiator, 87-04 Jeep Wrangler (Hd) - All Metal 2 Row

Part Number: CSF-2576

4.83 out of 5 stars ( 6 )

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Radiator, OE Replacement, Aluminum/Plastic, Natural, Jeep, JK Wrangler, Each

Part Number: CSF-3592

Not Yet Reviewed

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Radiators, Crossflow, Aluminum/Plastic, Natural, Jeep, L4, V6, Each

Part Number: OSC-2957

3.75 out of 5 stars ( 8 )

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Radiator, Performance, Aluminum, Polished, Crossflow, 2 Row, Jeep, JK Wrangler, Each

Part Number: RAD-MOJ995

4.0 out of 5 stars ( 13 )

Estimated Ship Date: Nov 23, 2026 if ordered today

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Estimated Ship Date: Nov 23, 2026 if ordered today

Radiator, Aluminum/Plastic, Replacement, Natural, Crossflow, 1-Row, Manual Tranny, Jeep JK, Each

Part Number: MIO-R2957-MT

4.0 out of 5 stars ( 2 )

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Radiator and Fan, Exact-Fit, Aluminum, Crossflow, 1-row, Single Fan, Jeep, Kit

Part Number: GRI-CU-70032

Not Yet Reviewed

Estimated Ship Date: Dec 17, 2026 if ordered today

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Estimated Ship Date: Dec 17, 2026 if ordered today

Radiators, Downflow, Aluminum/Plastic, Natural, Transmission Cooler, Jeep, 2.5L, 4.0L, Each

Part Number: CSF-3244

3.75 out of 5 stars ( 4 )

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Radiator, Exact-Fit, Aluminum, Natural, Jeep, with Chevy, Small Block, Each

Part Number: BCI-62007

Not Yet Reviewed

Estimated Ship Date: Dec 18, 2026 if ordered today

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Estimated Ship Date: Dec 18, 2026 if ordered today

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