Mercedes-Benz 270 200 22 00 is a thermostat with housing mainly used on the M270 2.0L turbo petrol engine and some AMG M133 applications.
Main applications
CLA 250 (C117) — 2.0L M270.920, 2014–2019
CLA 45 AMG (C117) — 2.0L M133, 2014–2019
GLA 250 (X156) — 2.0L M270, 2015–2020
GLA 45 AMG (X156) — 2.0L M133, 2015–2019
The same thermostat is also listed for Mercedes A-Class (W176) and B-Class (W246/W242) with 1.5–2.0L engine.