Mercedes-Benz W212 M274 Engine Coolant Thermostat Housing Assembly A2742000800 - Used Original Parts
RM 600
Condition: Used (Original)Diagnosis and Common Symptoms
From a workshop perspective, the M274 engine's thermostat housing is a frequent point of failure. The primary issues we diagnose are hairline cracks in the composite housing from constant thermal cycling, leading to coolant leaks, and internal failure of the electronically-actuated thermostat mechanism.
Common On-Board Display Warnings:
- "Check Coolant Level" message due to leaks.
- Engine temperature gauge reading erratically or exceeding normal operating range.
- Red "Coolant Temperature High" warning, advising to stop the vehicle.
Diagnostic Trouble Codes (DTCs):
- P0128: Coolant Temperature Below Thermostat Regulating Temperature (Thermostat stuck open).
- P0597: Thermostat Heater Control Circuit/Open (Electrical failure of the internal heater element).
A visual inspection will often reveal pink or blue crystalline residue around the housing, confirming an external leak. Failure to address these symptoms can lead to engine overheating and significant consequential damage.
Introduction
At M.S. Motor, we see the consequences of using inferior parts daily. This is a Genuine Mercedes-Benz Coolant Thermostat Housing Assembly, meticulously removed from a low-mileage donor vehicle. Our technicians have bench-tested its electronic actuation and pressure-tested the housing to ensure it performs to the manufacturer's precise specifications. Trust in a verified, genuine component to restore your vehicle's critical thermal management system correctly the first time.
Product Details
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Brand: Mercedes-Benz
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Model Compatibility: W212 E-Class (Facelift 2013-2016) equipped with the M274 2.0L turbocharged engine.
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Part Name: Engine Coolant Thermostat Housing Assembly with Integrated Sensor
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Condition: Genuine Used (Tested Working)
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Notes: This is the complete assembly, including the electronically controlled thermostat and integrated temperature sensor. We strongly recommend using a new gasket during installation to ensure a perfect seal.
Frequently Asked Questions
What symptoms indicate failure?
The most common indicators are engine overheating, the engine taking an unusually long time to reach operating temperature, a check engine light, or visible coolant leaks near the front of the engine.
Does this require coding?
No. This component is a direct, plug-and-play replacement. It does not require SCN coding or any form of programming. After installation, it is best practice to clear any pre-existing fault codes with a diagnostic tool.
Is this original?
Yes, this is a 100% Genuine Mercedes-Benz part. We exclusively source and verify original components to guarantee proper fitment and long-term reliability.
Part price does not include installation. Our workshop can install for you, labour is charged separately and confirmed with you before any work starts.
We cannot diagnose your car over WhatsApp or photos. Not sure this part will solve your problem? Come for a workshop check, diagnosis fee RM180. If you proceed with the repair using our parts, the RM180 is offset into the labour charge. If you decide not to repair, only the RM180 applies.
All parts are tested and guaranteed to work. Whether a part solves your car's problem can only be confirmed by diagnosis.
Shipping: from Kuala Lumpur, West Malaysia ~RM50, East Malaysia ~RM80 (estimate, confirm via WhatsApp). Delivery 1-2 working days in secure anti-static packaging.
Warranty: 30-day exchange for control units, engines, gearboxes and other major parts; 14 days for small parts. Claims require proof of installation by a qualified workshop. No warranty for items opened, modified, or damaged by wrong installation.
Prices vary with stock and part condition. Final price via WhatsApp.
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