How to Inspect a Radiator Cap on 2008 Dodge Viper?

Put the radiator cap upright and check the valve at the bottom; if the gasket on the cap is swollen and keeps the valve from shutting, change the cap. You should be able to open the vent valve by pulling your fingernail with only a bit of effort. Holding the cap upside down, check to see if you catch a flash of light between the vent valve and the rubber seal; if you do, you should replace it.

OEM 2008 Dodge Viper Radiator Cap

Cooling Radiator Cap

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2 Radiator Caps found

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2008 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.
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Fits the following 2008 Dodge Viper Submodels:
- ACR, Base, GT, GTC, GTS, SRT, SRT-10, SRT-10 ACR | 10 Cyl 8.4 L GAS, 8.4L V10
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2008 Dodge Viper 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 2008 Dodge Viper Submodels:
- ACR, GT2, GTS, R/T-10, SRT-10, SRT-10 ACR | 10 Cyl 8.0 L GAS, 10 Cyl 8.3 L GAS, 10 Cyl 8.4 L GAS

2008 Dodge Viper Radiator Cap Parts and Q&A

Q: How to Inspect a Radiator Cap on 2008 Dodge Viper?
A: Put the radiator cap upright and check the valve at the bottom; if the gasket on the cap is swollen and keeps the valve from shutting, change the cap. You should be able to open the vent valve by pulling your fingernail with only a bit of effort. Holding the cap upside down, check to see if you catch a flash of light between the vent valve and the rubber seal; if you do, you should replace it.