CSF 4539 Stant 18 PSI Small Radiator Cap (Case of 20) Dodge/Jeep/Ram 2005-2012

When pressures inside your cooling system increase above its psi rating, the radiator pressure cap release some of the coolants into the overflow tank. It does this by use of a spring loaded valve. Once enough coolant has exited the system to reduce the pressure, the valve closes again. This action allows the system to remain at the optimal psi while the engine is running.

When the engine cools and pressure in the system drops, the radiator pressure cap allows the excess coolant in the overflow tank to return to the system by use of a 2nd spring loaded valve. This 2nd valve responds to the vacuum created in the system from the drop in pressure and pulls the coolant out of the overflow tank. Not only does this recycle the excess coolant to prevent air pockets in the radiator, but it also prevents the softer components of the cooling system, such as the hoses, from becoming crushed by the external air pressure.

Features:

< li >Made to keep your vehicle’s engine running cool

< li >Designed to maintain proper cooling level and prevent overheating

< li >Manufactured from high-strength materials to last

< li >Durable construction to withstand everyday wear and tear

Fitment:

< li >Dodge Nitro 2007-2011

< li >Dodge Ram 2011-2012

< li >Jeep Liberty 2007-2012

< li >Jeep Wrangler 2005-2011

< li >Ram 2500 2011-2012

< li >Ram 3500 2011-2012

Notes:

< li >Replace the pressure cap with quality matching pressure cap whenever necessary.

WARNING: Cancer and Reproductive Harm