Mercedes-Benz C E W203 W210 OM611 OM612 Coolant Thermostat Housing A6112000615

The Mercedes W203 W210 OM611 OM612 Thermostat Housing is an original part from the Thermostats and Housings group, designed for the cooling system of Mercedes diesel engines. Its precise construction ensures stable coolant flow and proper cooperation with the thermostat, contributing to safe operating conditions for the engine. A used OEM component is a sensible choice for technical repairs or servicing of the cooling system in Mercedes C-Class W203 and E-Class W210 vehicles with OM611 and OM612 engines.

Specifications and technical data

• SKU: A6112000615
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6112000615
• Substitutable numbers: A6112000615, A 611 200 06 15, BG
• Category: Thermostats & Housings

Purpose and Function in the Cooling System

The thermostat housing is responsible for securely seating the thermostat insert and properly distributing coolant between the engine block and the cooling system hoses. In OM611 and OM612 engines, the correct operation of this component is crucial for:

• maintaining the engine's stable operating temperature,
• reducing the risk of engine overheating or undercooling,
• ensuring proper fluid circulation throughout the system,
• maintaining the seal of connections with the radiator hoses.

Thanks to the factory-designed geometry of the spigots and sealing surfaces, the housing works with standard hoses and accessory components, facilitating installation and subsequent operation.

Benefits of Using an Original Mercedes Thermostat Housing

Using an original housing in Mercedes W203 and W210 vehicles with OM611/OM612 engines allows for the preservation of manufacturer-specified parameters. The most significant advantages include:

• Factory Fitment to the engine block socket and standard cooling system hoses.
• Stable coolant flow, promoting uniform engine heating and cooling.
• The ability to use existing mounting points without the need for modifications.
• Compatibility with the original thermostat and sensors designed for this generation of engines.

This solution is particularly beneficial for servicing vehicles used intensively, where parameter consistency and predictable cooling system behavior are paramount.

Condition, Origin, and Technical Aspects

The thermostat housing is from a Mercedes vehicle and is offered as a used part, allowing for the combination of OEM functionality with an attractive repair cost. This type of component is often chosen by workshops specializing in OM611 and OM612 engine service, where compliance with factory technical documentation and predictable installation are important.

Compared to aftermarket alternatives, the original housing ensures the preservation of the original flow channel geometry and mounting points, minimizing the risk of leaks and fitting issues. It is a practical solution for replacing a damaged or corroded housing in the cooling system.

Practical Application in Servicing and Eco-Tuning

Thermostat housing replacement is often performed concurrently with coolant service, hose replacement, or thermostat replacement. In high-mileage vehicles, this helps restore stable engine operating conditions and reduce the risk of overheating-related failures. The use of a proven recycled part also aligns with a modern approach to vehicle operation, combining cost-effectiveness with reduced consumption of new raw materials – more on this topic can be found in the article Eco-Tuning in Practice: How to Increase Performance While Reducing Carbon Footprint with Recycled Parts.

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and require other parts from the same group, such as thermostat bodies, connection covers, or spigot housings, check the available parts in the Mercedes Thermostats and Housings category.