This original BMW thermostat assembly controls the flow of engine oil to the oil cooler on F22/F23 M235i, F30/F34 335i, and F32/F33/F36 435i models.
This part is listed by BMW as BMW part number 11427637052 (11-42-7-637-052) and is described as Genuine BMW Oil Cooler Thermostat with Housing for N55 engine.
BMW Fitments:
F22 / F23 (2014-2021) > M235i
F22 / F23 (2014-2021) > M235i xDrive
F22 / F23 (2014-2021) > M235i-Racing
3 Series
F30 / F31 / F34 (2012-2019) > 335i
F30 / F31 / F34 (2012-2019) > 335i xDrive
F30 / F31 / F34 (2012-2019) > Hybrid 3
4 Series
F32 / F33 / F36 (14-20) > 435i
F32 / F33 / F36 (14-20) > 435i xDrive