457 188 02 04 R3 Tourismo OM 457 HLA Oil Cooler Cover

What does an oil cooler cover do?

This engine oil cooler cover serves as a critical component in the thermal management system of heavy commercial vehicle engines. It encloses the oil cooler housing and holds the cooling core bundle securely in its seat on the engine block. By providing precise sealing surfaces, it maintains the necessary separation between oil and coolant circuits while managing the oil transfer channels and bolt load during high-temperature operation.

Vehicle and engine compatibility

This specific component is designed for use in Mercedes-Benz Tourismo (O 350) vehicles, including the Tourismo 15 RHD and Tourismo 16 RHD models equipped with OM 457 HLA engines. It serves as a reliable replacement to maintain engine thermal stability in heavy-duty service.

Installation and maintenance guidance

When performing installation, technicians should inspect the mounting surfaces for any scoring or irregularities that could compromise the seal. It is highly recommended to replace all gaskets or O-rings during assembly to prevent pressure loss between the lubrication and cooling systems. Proper torque application according to service manual specifications is essential to ensure a leak-free fitment.

Troubleshooting and inspection

Regular inspection of the oil cooler assembly can help identify early signs of thermal stress or sealant degradation, preventing potential engine overheating or fluid mixing issues.

OE cross-reference

0101 195 (Oil Cooler Cover) is the equivalent of the Mercedes-Benz OE number. This part directly replaces Mercedes-Benz OE number 4571880204R3.