How to Inspect a Radiator Cap on 2009 Dodge Viper?

If the valve at the bottom of the cap isn't closing because the rubber gasket has grown, you should replace the cap. You should be able to open the vent valve a little by pulling it with your fingernail. After that, turn the cap upside down and look for a space between the vent valve and the gasket; if light shines through, get a replacement cap.

OEM 2009 Dodge Viper Radiator Cap

Cooling Radiator Cap

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1 Radiator Cap found

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2009 Dodge Viper Radiator Cap Part Number: 5278767AB
$18.07 MSRP: $26.45
You Save: $8.38 (32%)
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Product Specifications
- Other Name: Cap - Radiator; Engine Coolant Reservoir Cap; Reservoir Cap; Filler Cap; Cap; Cap Radiator
- Replaces: 5278767AA, 5183710AA
- Item Weight: 0.60 Pounds
- Item Dimensions: 1.5 x 2.7 x 2.7 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 5278767AB
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
More Info
Fits the following 2009 Dodge Viper Submodels:
- ACR, Base, GT, GTC, GTS, SRT, SRT-10, SRT-10 ACR | 10 Cyl 8.4 L GAS, 8.4L V10

2009 Dodge Viper Radiator Cap Parts and Q&A

Q: How to Inspect a Radiator Cap on 2009 Dodge Viper?
A: If the valve at the bottom of the cap isn't closing because the rubber gasket has grown, you should replace the cap. You should be able to open the vent valve a little by pulling it with your fingernail. After that, turn the cap upside down and look for a space between the vent valve and the gasket; if light shines through, get a replacement cap.