OEM 2008 Dodge Ram 3500 Radiator Cap

2008 Dodge Ram 3500 Radiator Cap Parts and Q&A

• Q: Is Your Radiator Cap in Need of Replacement? How to Inspect and Decide on 2008 Dodge Ram 3500?

  A: Hold the radiator cap upright at eye level; the valve should be closed at the bottom and a light tug on it should open it. Should the rubber gasket grow and keep the valve from opening, the cap should be swapped. After that, position the cap upside down at eye height; any light sneaking through where the vent valve meets the rubber gasket also requires replacing the cap. Get a cap that matches the requirements for a coolant reserve/overflow system, as this one will have a completely sealed spring and a rubber seal on top that fits the radiator filler neck's top.