8157550 SP1 Compatible Compressor for Volvo NH12

What does a twin cylinder compressor do?

This twin cylinder compressor serves as a critical component in the air brake system of heavy commercial vehicles, utilizing two piston-cylinder assemblies to generate high-volume compressed air. By providing two compression strokes per crankshaft revolution, this unit ensures rapid reservoir filling and stable pneumatic pressure. This specific model is engineered with heavy-duty grade materials to withstand rigorous thermal and mechanical stress during continuous operation.

Vehicle and engine compatibility

This unit is specifically compatible with Volvo NH12 trucks equipped with D12A engines. It is engineered to match the exact requirements of the vehicle's pneumatic system, ensuring seamless integration within the engine's drive configuration. For technicians, it is essential to verify that the mounting flange and port locations align with the existing installation site.

Technical specifications and installation

The assembly features a water-cooled design with a water inlet and outlet port size of M16x1,5. It includes an air unloader port (M22x1,5) and an air outlet port (M26x1,5), alongside an air inlet port of Ø29. Technicians should check the water cooling lines and mounting bolts during installation to prevent leaks or vibration-induced wear.

Maintenance and troubleshooting

Regular inspection of the cooling interface and port seals is recommended to maintain optimal air output. If air delivery slows or pressure drops occur, verify the integrity of the water cooling circuit and the valve plate condition.

OE cross-reference

1300 050 006 (Twin Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 8157550SP1.