21447018 Oil Cooler Cover for Volvo NH12

What does an oil cooler cover do?

This oil cooler cover is a vital component within the engine cooling system, designed to enclose the oil cooler housing and secure the cooling core bundle in its seat. By providing precise sealing surfaces, it ensures that engine oil and coolant remain in separate, controlled circuits. This prevents cross-contamination and maintains optimal thermal management during heavy-duty operations.

Vehicle and engine compatibility

This specific part is compatible with Volvo NH12 trucks equipped with D12C engines. It serves as a reliable replacement for original components, maintaining the structural integrity of the oil radiator assembly under high pressure and thermal stress.

Installation and maintenance guidance

When performing engine maintenance or repairs, technicians should inspect the sealing surfaces of the cover to prevent leaks. Ensuring correct bolt load during installation is critical to maintaining the seal between the housing and the engine block. For precise fitment, always check against the vehicle's specific engine requirements.

Troubleshooting and inspection

Properly seated covers prevent pressure drops in the lubrication system. If leaks are detected near the oil cooler assembly, this component should be inspected for surface irregularities or cracks to ensure continuous engine performance.

OE cross-reference

0103 121 (Oil Cooler Cover) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 21447018.