How to Inspect and Replace a Radiator Cap on 2009 Jeep Wrangler?

Inspect the radiator cap by checking the vent valve on the bottom. If the rubber gasket is swollen or light can be seen between the vent valve and gasket, replace the cap. Use a cap made for a coolant reserve system and be sure to provide for proper coolant return to the radiator.

OEM 2009 Jeep Wrangler Radiator Cap

Cooling Radiator Cap

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2009 Jeep Wrangler Radiator Cap Part Number: 4596198
$26.33 MSRP: $37.85
You Save: $11.52 (31%)
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Product Specifications
- Other Name: Cap - Radiator; Engine Coolant Reservoir Cap; Reservoir Cap; Recovery Tank Cap; Cap for Coolant Recovery Bottle; Radiator Cap 04596198
- Replaces: 5086226AA
- Item Weight: 0.60 Pounds
- Item Dimensions: 9.5 x 6.1 x 1.0 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 4596198
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
More Info
Fits the following 2009 Jeep Wrangler Submodels:
- 70th Anniversary, 75th Anniversary, Rubicon, Sahara, Sport, Sport S, Unlimited 70th Anniversary, Unlimited 75th Anniversary, Unlimited Rubicon, Unlimited Sahara, Unlimited Sport, Unlimited Sport S, Unlimited X, X, X-S | 6 Cyl 3.6 L GAS, 6 Cyl 3.8 L GAS

2009 Jeep Wrangler Radiator Cap Parts and Q&A

Q: How to Inspect and Replace a Radiator Cap on 2009 Jeep Wrangler?
A: Inspect the radiator cap by checking the vent valve on the bottom. If the rubber gasket is swollen or light can be seen between the vent valve and gasket, replace the cap. Use a cap made for a coolant reserve system and be sure to provide for proper coolant return to the radiator.