CSF 4540 Stant 20 PSI Mini Radiator Cap (Case of 20) for Ford, Infiniti, Mazda, Mercury, Nissan, Subaru 2006-2014

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 >Ford Explorer 2006-2010

< li >Infiniti FX35 2012

< li >Infiniti FX50 2012

< li >Infiniti G25 2011-2012

< li >Infiniti G37 2008-2013

< li >Infiniti Q60 2014

< li >Mazda CX-7 2007-2012

< li >Mercury Mountaineer 2006-2009

< li >Nissan 370Z 2009-2014

< li >Subaru Forester 2006-2013

< li >Subaru Impreza 2008-2010

Notes:

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

WARNING: Cancer and Reproductive Harm