Mosselman Oil Thermostat S55

Expert's advice:

Mosselman Oil Thermostat S55, Aluminum

The BMW S55 engines are no strangers to oil cooling problems, that’s why we recommend installing the Mosselman Oil Thermostat. The standard OEM oil thermostat will reach around 120 degrees Celsius (248°F) with a normal driving style. The Mosselman Oil Thermostat will open at a lower temperature than the standard oil thermostat (at 85 degrees Celsius/185°F), which results in an operational oil temperature 20°C (68°F) lower than OEM. *Exact temperatures can differ slightly depending on the engine type. Installing the Mosselman Oil Thermostat ensures a cooler oil temperature which will result in more stable performance, but above all this improves the reliability of the engine. A highly recommended upgrade for the BMW S55 engines, especially when they’re tuned. 

The Mosselman Oil Thermostat for the S55 engine is available in 4 beautiful colors: aluminum, black, red or blue.

Note: For a reliable and hassle-free installation, we strongly recommend adding the Oil Thermostat Installation Kit to your order. It is specifically designed to ensure a proper seal and prevent leaks when installing the Mosselman Oil Thermostat. The kit includes two O-rings for the oil hoses and a rubber gasket for the oil filter housing, providing everything needed for a secure and durable fit.

Mark Hendrikx - Automotive engineer at Mosselman