Over time gaskets become dry and brittle allowing oil to leak in your engine compartment. Replace this gasket and stop having to top off your oil every month. A common source of leaks on the N54/55 is the gaskets between the the thermostat plate and filter housing, and also the filter housing to engine block. This kit includes every thing need to replace the oil cooler thermostat, including both gaskets, oil and coolant.??
