Name: Compatible Thermostat M276 for Mercedes-Benz
SKU: 10604
Price: 804.35 ZAR
Availability: InStock

Compatible Thermostat M276 for Mercedes-Benz, Ref 2762000515

Engine thermostat assembly, designed for Mercedes-Benz vehicles with the M276 V6 petrol engine, 3.5 NA and 3.0 biturbo. Intended for engines with slow warm-up, unstable operating temperature, overheating or weak heater performance. Sold per unit, variant specific as supplied with housing and sensor where applicable.

What this is / isn’t:
Included: 1× thermostat assembly

Important: Match by VIN and engine code M276. There are multiple sub variants, M276.9xx 3.5 NA and M276 DELA30 3.0 biturbo, including AMG 43. Housings, outlet angles and connectors can differ by year and model. Always confirm by OE part number.

Key Features:

Temperature control: Opening temp and flow for stable engine and cabin heat.
Integrated housing and seal: Replacement to minimise leaks and comebacks.
Correct sensor or actuator logic: Communicates with the ECU for accurate warm up and efficiency.
Materials: High temp plastics and elastomers.
Fitment: Designed to use the existing mounting points.

Compatibility:
Common Mercedes models using M276 V6, confirm by VIN or OE:

C Class W204, W205 C350, C400, C450, AMG C43 where fitted
E Class W212, W213 E300, E350, E400, E450
CLS C218, C257 early CLS350, CLS400, CLS450
S Class W222 early, W221 late select markets S300, S400, S450 where M276 fitted
GLK X204 late, GLC X253, GLE W166, W167, ML W166, GL X166, GLS X166, SLK R172, SLC R172, G W463 select trims
Drivetrain: 2WD and 4MATIC where applicable. Markets vary, always match by VIN.

Options, engine or sensor variations:

M276 3.5 NA → specific housing orientation and sensor connector.
M276 3.0 biturbo and AMG 43 → revised housing and actuator spec, check supersessions.
Model year revisions → outlet angle, hose size or plug style may change.

Always order by the exact OE part number on your vehicle or confirm via VIN.

Symptoms of a faulty thermostat:

Slow warm up, temperature gauge low or fluctuating.
Overheating in traffic or under load.
Weak cabin heat, fault code P0128 Or related temperature errors.
Coolant seepage around the housing, dried crust at joints.

Installation notes, pro tips:

Work on a cold engine. Drain coolant below housing level.
Replace the seal or O ring, clean mating faces, torque bolts evenly to spec.
Refill with Mercedes approved coolant, MB 325.x Spec, bleed the system thoroughly.
Verify fan operation and hose temperatures on first heat cycle, clear stored codes after a road test.
Inspect adjacent hoses, clamps and plastic tees for age related brittleness.

What’s included / not included:
Included: 1× Thermostat assembly with housing and seal, sensor or actuator if supplied
Not included: Coolant, hoses, clamps, water pump, radiator, extra sensors, hardware

Q&A
Q1: How do I confirm I have the M276 engine and the correct sub variant?
Check your VIN data card for the engine code. Your VIN will map to the exact thermostat part number.
Q2: Do I need coding after replacement?
Coding is usually not required. Clear any fault codes and verify operating temperature with a scan tool.
Q3: Which coolant should I use?
Use Mercedes coolant meeting MB 325.x Specification, mixed to the correct ratio.
Q4: What else should I replace?
Consider a coolant service, inspect hoses and clamps, replace brittle plastic fittings.

Condition: New aftermarket replacement part. Not an original Mercedes-Benz part; brand and model names are used only to show fitment.