Thermostat Housing Pipe Mercedes W204 W212 OM642 Thermostat Flange A6422001156

Thermostat Housing Pipe Mercedes W204 W212 OM642 Thermostat Flange is a specialized cooling system component designed for OM642 diesel engines in selected Mercedes models. The precise geometry of the flange and its perfect fit to the factory installation ensure stable coolant flow and proper cooperation with other system components. Thanks to the use of an original design from the Thermostats and housings category, this part allows for maintaining the factory operating parameters of the power unit.

Specifications and technical data

• SKU: A6422001156
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6422001156
• Substitutable numbers: A6422001156, A 642 200 11 56, A6422000056, A 642 200 00 56, KZ
• Fuel type: Diesel
• Category: Thermostats & Housings

Purpose and function in the cooling system

The water flange housing in the OM642 diesel engine is responsible for directing the coolant flow between the engine block, thermostat, and cooling system hoses. The proper shaping of the channels and stable mounting reduce the risk of leaks, engine overheating, and improper thermostat operation. Using a dedicated component for the W164, W204, and W212 series ensures compatibility with the factory engine bay architecture.

Compatibility with the OM642 diesel engine

The presented water flange housing has been designed to work with the OM642 diesel unit, which means it is adapted to the operating conditions characteristic of this engine: higher thermal loads, specific routing of cooling hoses, and the layout of accessories. The design of the element takes into account the requirements for a Diesel engine, including appropriate rigidity and resistance to temperature changes during long-term operation.

Benefits of using an original flange housing

Using the correct water flange housing in the cooling system provides a number of practical operational benefits:

• maintaining proper coolant circulation in the OM642 engine,
• reducing the risk of leaks at hose and thermostat connections,
• maintaining a stable operating temperature of the power unit,
• better cooperation with the factory thermostat and other elements in the Thermostats and housings category,
• easier diagnostics and service thanks to the preservation of original geometry and mounting points.

Product characteristics and condition

The water flange housing comes from the Mercedes brand offer and is a dismantled component, which allows for an economical repair of the cooling system while maintaining the original design. A used component of this class is particularly attractive for vehicles used intensively, where a reasonable balance between repair cost and maintaining factory technical solutions is important. The product is intended for installation in place of a worn or damaged housing, without the need for cooling system modifications.

Professional selection by part numbers and technical support

Selecting a water flange housing for a specific vehicle should be based on vehicle identification data and part numbers, which minimizes the risk of incompatibility with a specific engine and body version. In case of doubt, it is useful to compare the shape, mounting points, and flange diameters with the element currently installed in the vehicle. For users interested in a broader context of selecting used powertrain components and accessories, the following guide will be helpful: Why it is worth buying used gearboxes and engines – facts instead of myths, which discusses, among other things, the importance of OEM numbers and the part verification procedure.

If you are planning a comprehensive repair or upgrade of the cooling system area in your Mercedes and need other elements from the same group, such as thermostats, thermostat housings, or water flanges, check the available parts in the Mercedes Thermostats and housings category.