Radiator Cap Inspection

The vent valve in the cap is normally closed by the main spring.
If an O-Ring seal is damaged, replace the cap.
A replacement cap must be the type designed for use on a pressurized coolant bottle.

Courtesy of CHRYSLER GROUP, LLC

1 - Vent Valve

2 - O-Ring Seal

3 - Main Spring

4 - O-Ring Seal