403 180 3938 Mercedes-Benz OM 401 Oil Cooler Cover

What does an oil cooler cover do?

This oil cooler cover serves as a critical component in the engine cooling system, specifically designed to enclose the oil cooler housing. By holding the cooling core bundle securely in its seat on the engine block, it maintains the necessary seal between oil and coolant circuits. This prevents internal mixing and ensures consistent thermal management during heavy-duty operation.

Vehicle and engine compatibility

This component is specifically fitted to Mercedes-Benz O 303 vehicles equipped with OM 401 or OM 401 (RAM-Air) engines. It provides a precise fit for these specific heavy commercial vehicle applications, ensuring that all sealing surfaces and transfer channels align correctly with the engine block.

Installation and maintenance

When inspecting or replacing this part, technicians should verify the integrity of the sealing surfaces and ensure that the sensor connections are properly seated. Proper installation is vital to prevent pressure loss within the oil cooling circuit and to maintain optimal engine temperature regulation.

Troubleshooting and selection

Maintaining a high-strength component like this helps prevent leaks and potential engine overheating. For fleet managers and workshop technicians, selecting a part that matches the specific engine configuration is essential for long-term reliability.

OE cross-reference

0101 049 (Oil Cooler Cover) is the equivalent of the Mercedes-Benz OE number. This part directly replaces Mercedes-Benz OE number 4031803938.