Pressure Cap Aluminum Coolant tank R53 R52

Aluminum Pressure Cap Coolant Expansion Tank for R52 R53 Cooper S. The coolant expansion tanks on the 2002-2006 R53 MINI Cooper S, and 2005-2008 R52 MINI Cooper S convertible are very common to leak and prone to failure under pressure due to design. This new all aluminum coolant expansion tank is different from all the others as this uses a true radiator cap. Using this pressure relief style cap ensures your cooling system can build the proper cooling system pressure maintaining temp correctly. This overflow tank as you see has a nipple for the pressure relief to direct coolant if you overheat. This is a must for racing use as this will allow you to run a hose and keep it from dumping on the exhaust header and engine along with the race track. This tank uses a simple Stant radiator cap that can be had at any local auto parts store. This will allow you to select the pressure you wish to use up to 30lbs. Tank comes as shown in picture as tank.