Mercedes W204 OM642 Diesel Engine Oil Sump Pan Overcasing Support A6420142602

Mercedes W204 OM642 Diesel Engine Oil Sump Pan Overcasing Support is an original lubrication system component designed for diesel engines, engineered to ensure stable operation of the power unit. Thanks to its factory-spec geometry and precise fit for the OM642 design, it ensures proper oil circulation and optimal operating conditions for all engine components. This used OEM component is a sensible choice for professional repairs where technical compliance and predictable performance are essential.

Specifications and technical data

• SKU: A6420142602
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420142602
• Substitutable numbers: A6420142602, A 642 014 26 02
• Fuel type: Diesel
• Category: Oil Sumps

Purpose and role in the lubrication system

The oil sump in the OM642 diesel engine serves as a critical working reservoir for engine oil, which is then drawn by the pump and distributed through the lubrication channels. The properly designed internal space and shape of the sump help reduce foaming and pressure loss during dynamic driving, which is particularly important in high-torque diesel units.

A correctly selected oil sump for a specific version of the Mercedes W204 with a diesel engine helps maintain stable lubrication system parameters, which translates into reduced wear of moving parts, smoother operation, and greater resistance to thermal loads.

Benefits of using an original oil sump

Using an original oil sump in a Mercedes W204 with an OM642 unit provides a number of practical benefits in daily operation:

• factory fitment to the engine block and lubrication system,
• preservation of the oil capacity designed by the manufacturer,
• correct placement of mounting points and sockets for additional components,
• compatibility with equipment intended for diesel engines.

As a result, installation is predictable, and after replacement, you can maintain performance parameters close to factory specifications without the need for structural modifications.

Condition, selection, and installation aspects

The offered oil sump is an item from the Oil Sumps category and comes from disassembly, which allows for combining a favorable purchase cost with the preservation of the manufacturer's original specifications. Before installation, a standard preparatory procedure is recommended: thorough cleaning of the mating surfaces, inspection of flatness, and the use of a properly selected gasket or sealant in accordance with service recommendations.

When selecting parts, it is worth paying attention to compatibility with the specific diesel engine version and body configuration to ensure full compatibility with equipment and the exhaust system. Proper component selection facilitates subsequent service and reduces the risk of leaks or interference with other elements in the engine bay.

Application in OM642 diesel engines

OM642 diesel engines used in the Mercedes W204 operate under significant thermal and mechanical loads, which is why stable lubrication has a direct impact on their durability. An oil sump matched to this unit supports:

• maintaining the correct oil level under various driving conditions,
• effective heat dissipation from the oil to the environment,
• proper operation of the oil pump and sensors related to the lubrication system.

By choosing an original oil sump for a diesel engine, you minimize the risk of problems resulting from inaccurate fitment or geometric differences typical of aftermarket replacements of uncertain origin.

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 sumps, covers, or mounting elements, check the available parts in the Mercedes Oil Sumps category.

For a better understanding of the impact of lubrication and fuel quality on the durability of the power unit, as well as better component selection according to manufacturer markings, it is worth reading the guide: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.