Mercedes W213 W222 OM656 Diesel Water Coolant Thermostat Housing A6562000015

Mercedes W213 W222 OM656 Diesel Water Coolant Thermostat Housing is a component from the Thermostats and housings category, designed for OM656 diesel engines used in E-Class W213 and S-Class W222 models. This used housing ensures a factory-fit for the cooling system, facilitating precise and trouble-free replacement. It is a practical solution for workshops and users looking to restore the proper operation of the thermal system in a diesel engine.

Specifications and technical data

• SKU: A6562002200
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6562002200
• Substitutable numbers: A6562002200, A 656 200 22 00
• Fuel type: Diesel
• Category: Thermostats & Housings

Purpose and function in the cooling system

The thermostat housing in the OM656 engine is responsible for the stable seating of the thermostat and the proper routing of coolant between the engine block and other system components. In diesel units, proper regulation of the operating temperature is crucial for:

• maintaining optimal engine thermal efficiency,
• reducing fuel consumption,
• lowering thermal stress on components,
• stable operation of the exhaust gas treatment system.

By using an original housing designed for the Mercedes W213 and W222, the correct geometry of the cooling channels and compatibility with factory connectors and mounts are maintained.

Benefits of using an original thermostat housing

In OM656 diesel engines, using a properly selected thermostat housing translates into a number of practical service and operational advantages:

• Factory fit – maintaining the original thermostat position and the tightness of connections with the cooling system.
• Stable operation under a wide range of loads – essential for the high torque of diesel units.
• Easy installation – the ability to use standard mounting points and factory connectors.
• Consistency with the OM656 design – no need to modify hoses or use additional adapters.

An element configured in this way allows for the restoration of proper coolant circulation, which has a direct impact on engine durability and vehicle comfort.

Application in Mercedes W213 and W222 with Diesel engine

The thermostat housing dedicated to the OM656 unit is used in modern Mercedes E-Class W213 and S-Class W222 models with diesel engines. In these designs, the cooling system is engineered for high loads and long mileage, which is why the proper selection of components is important for:

• maintaining a stable operating temperature in both city and highway driving,
• proper cooperation with engine management systems,
• reducing the risk of overheating under heavy loads.

A used, original housing allows for the preservation of parameters specified by the manufacturer, which is particularly important when servicing modern diesel units.

Condition, origin, and use in repairs

The item comes from dismantling and is offered as a used thermostat housing, which is a cost-effective solution while maintaining the original specification. This type of part is suitable both for standard replacement of a damaged housing and for more extensive repair work within the OM656 engine cooling system.

If new components are unavailable in the authorized service network or the waiting time is too long, it is worth considering the use of proven parts from dismantling. You can find more on this topic in the article No parts at the dealership? How to deal with repairing older models using parts from dismantling, which discusses a practical approach to repairs using original, used components.

Expanding the cooling system in a Mercedes

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other elements from the same group, such as additional housings, bodies, or components working with the thermostat, check the available parts in the Mercedes Thermostats and housings category.

Summary

Mercedes W213 W222 OM656 Diesel Water Coolant Thermostat Housing is a practical choice for users and workshops servicing modern Mercedes diesel engines. A used, original part from the Thermostats and housings group allows for the restoration of proper cooling system operation, maintaining the factory fit and parameters intended for the OM656 unit. It is a reasonable solution wherever technical correctness, predictable engine behavior, and repair cost optimization are important.