Radiator Pressure Cap-Description

Fig 1: Cooling System Pressure Cap Filler Neck

Courtesy of CHRYSLER LLC

1 - OVERFLOW NIPPLE

2 - MAIN SPRING

3 - GASKET RETAINER

4 - STAINLESS-STEEL SWIVEL TOP

5 - RUBBER SEALS

6 - VENT VALVE

7 - COOLANT PRESSURE CONTAINER

8 - FILLER NECK

The cooling system pressure cap is located on the coolant pressure container. The cap construction includes; stainless steel swivel top, rubber seals, and retainer, main spring, and a spring loaded valve.