Mosselman Oil Thermostat for F Series N55 Engines

The N55 engine is no stranger to oil cooling problems, that’s why we recommend installing the MSL Oil Thermostat.

The standard oil thermostat will reach around 120 degrees Celsius with a normal driving style.

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

MSL OIL THERMOSTAT
The next level of temperature control

20°C/68F Lower Than Stock

Operating temperature 20°C/68F lower than stock. 

Real Thermostat

Equipped with a real thermostat, not an always open solution. (for use in hot and cold climates) 

Rock Solid Housing

Made out of a solid block of high-grade aluminum. 

Quick Installation

Takes only 30 minutes to install