403 180 3938 Oil Cooler Cover for Mercedes-Benz O 303

What does an oil cooler cover do?

This oil cooler cover serves as a vital component in the engine cooling system, specifically designed to enclose the oil cooler housing. By securing the cooling core bundle within its seat on the engine block, it ensures that engine oil and coolant remain in separate, controlled circuits. This component is manufactured using heavy-duty grade materials to withstand the high thermal and pressure stresses found in heavy commercial vehicle engines.

Vehicle and engine compatibility

The part is specifically compatible with Mercedes-Benz O 303 vehicles equipped with OM 402 engines. It functions as an integral part of the oil cooling assembly, ensuring that thermal exchange occurs efficiently while maintaining structural integrity under operating loads.

Installation and maintenance

During installation, technicians should ensure that all sealing surfaces are clean and free of debris to prevent leaks between the oil and coolant channels. This cover is engineered to handle the bolt load required for a secure fit on the engine block. It is recommended to check all connection points and sensor interfaces during routine maintenance to ensure long-term sealing performance.

Troubleshooting and selection

Maintaining a proper seal at the oil cooler prevents catastrophic engine failures caused by coolant contamination or loss of oil pressure.

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.