The N55 engine is no stranger to oil cooling problems, that’s why we recommend installing the Mosselman Oil Thermostat. The standard oil thermostat will reach around 120 degrees Celsius with a normal driving style. The Mosselman Oil Thermostat will open at a lower temperature than the standard oil thermostat (at 85 degrees Celsius) and will keep the temperature stable between 95 and 105 degrees Celsius, depending on the car model. Installing the MSL thermostat ensures a cooler oil temperature which will result in more stable performance, but above all this improves the reliability of the engine. It is recommended to install the thermostat, especially for cars that are tuned.

The Thermostat is plug-and-play and made out of a solid block of high-grade aluminum at our own facility. It is equipped with a real thermostat, not an always open solution. The oil will still reach the operating temperature at the same time as a stock thermostat.

Note: The Oil Thermostat Installation kit prevents the thermostat from leaking and is highly recommended when installing the Mosselman Oil Thermostat. The kit includes 2 x O-ring for the oil hose and 1x rubber oil filter housing gasket. We advise you to add it to your order. 

Fit To:

BMW 335I GT F34 306HP (BEFORE 07/2013)

BMW 335I GT F34 306HP (AFTER 07/2013)

BMW 335I F30/F31 306HP (AFTER 07/2013)

BMW 335I F30/F31 306HP (BEFORE 07/2013)

BMW M135I F20/F21 LCI 326HP

BMW M2 F87 370HP

BMW 435I GRAN COUPE F36 306HP

BMW 435I F32/F33 306HP (BEFORE 07/2013)

BMW 435I F32/F33 306HP (AFTER 07/2013)

BMW M235I F22 326HP.

BMW M135I F20/F21 320HP (BEFORE 07/2013)

BMW M135I F20/F21 320HP (AFTER 07/2013)