8157550 SP1 Volvo NL12 D12A Twin Cylinder Compressor

What does a twin cylinder compressor do?

This twin cylinder compressor serves as a critical component within the pneumatic braking system of heavy commercial vehicles. It is engineered to provide consistent air pressure through high-strength components, ensuring reliable performance under demanding service conditions.

Compatible vehicles and engines

Specifically designed for Volvo NL12 vehicles equipped with D12A engines, this unit features a Ø88.00 mm cylinder bore and a 50 mm stroke. The configuration includes an air inlet port of Ø29 and an air outlet port of M26x1,5, alongside a water-cooled design to maintain stable operating temperatures. This compressor is also compatible with other Volvo heavy-duty engine configurations requiring similar specifications.

Installation and maintenance

For professional technicians, installation requires careful attention to the water inlet and outlet ports (M16x1,5) and the through-drive configuration. It is essential to verify that the air unloader port (M22x1,5) and mounting flange match the existing installation to ensure seamless integration into the vehicle's pneumatic circuit.

Troubleshooting and selection

Maintaining correct cooling flow through the water ports is vital for preventing overheating and ensuring the longevity of the internal components. Always check the drive gear and mounting points during replacement to ensure perfect alignment with the engine block.

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.