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:
*Aluminium usually in stock.
*Red, Blue and Black are pre order please allow 7 days approx.
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.
A HIGHLY RECOMMENDED UPGRADE FOR THE BMW S55 ENGINE
The Mosselman Oil 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.
The oil thermostat is recommended for sporty street driving, where maintaining stable oil temperatures is essential for both performance and engine longevity.
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20°C (68°F) Lower Than Stock
Operating temperature 20°C (68°F) lower than stock.
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CNC Machined Housing
Made out of a solid block of high-grade aluminum.
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Real Thermostat
Equipped with a real thermostat, not an always open solution. (for use in hot and cold climates)
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Quick Installation
Takes only 30 minutes to install.
Compatibility
- BMW M2 Competition F87 S55
- BMW M3 F8x S55
- BMW M3 Competition F80 S55
- BMW M3 CS F80 S55
- BMW M4 F8x S55
- BMW M4 Competition F82 S55
- BMW M4 CS F82 S55
- BMW M4 GTS F82 S55
Click here: Installation Manual