Thermostat M276 for Mercedes-Benz

OE-spec engine thermostat assembly for Mercedes-Benz vehicles with the M276 V6 petrol engine (3.5 NA and 3.0 biturbo). Restores correct warm-up time and stable operating temperature, and protects against overheating and weak heater performance.

Key Features

• Precise Temperature Control: OE-matched opening temp and flow for stable engine and cabin heat.
• Integrated Housing and Seal: Direct bolt-on replacement to minimise leaks and comebacks.
• Correct Sensor/Actuator Logic: Communicates with the ECU for accurate warm-up and efficiency.
• Exact Fitment: Factory mounting points for a no-mod install.

Compatibility

Common Mercedes models using M276 V6: C-Class W204/W205 (C350/C400/C450/AMG C43), E-Class W212/W213 (E300/E350/E400/E450), CLS C218/early C257 (CLS350/CLS400/CLS450), select S-Class W222/late W221 models, GLK X204 late, GLC X253, GLE W166/W167, ML W166, GL X166/GLS X166, SLK/SLC R172, and select G-Class W463 trims. 2WD and 4MATIC where applicable — always match by VIN.

Note: Coolant, hoses, clamps, water pump, radiator, and extra sensors/hardware not included.

This is an aftermarket replacement part, not a genuine Mercedes-Benz product. Not affiliated with or endorsed by Mercedes-Benz Group AG.