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Budget-friendly Mosselman - Oil Thermostat || N55 (f-gen Only) Markdown: -50% [qmH4t8zr]

$54.99 $175.99 -69%

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 o

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Budget-friendly Mosselman - Oil Thermostat || N55 (f-gen Only) Markdown: -50% [qmH4t8zr]

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 185 degrees Fahrenheit) and will keep the temperature stable between 203 and 221 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.

  • 20°C Lower Than Stock
    Operating temperature 20°C 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.
Compatibility Mosselman Oil Thermostat N55 Type Engine
BMW M135i F20/F21 N55
BMW M235i F22 N55
BMW M2 F87 N55
BMW 335i F30/F31 N55
BMW 335i GT F34 N55
BMW 435i  F32/F33 N55
BMW 435i Gran Coupe F36 N55

 

Note You will need the N54 Oil Thermostat for the E-Series 135i and 335i with the N55 engine!

What Our Customers Say

January 16, 2026

Absolutely no complaints!

The product is simply perfect.

- Margaret K..

January 16, 2026

Absolutely no complaints!

The product is a very good quality brand.

- Kasen V..

January 16, 2026

Absolutely no complaints!

A well-designed and reliable tool.

- Scott S..

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