8112851 Volvo NL12 D12A Twin Cylinder Compressor

What does a twin cylinder compressor do?

This twin cylinder air compressor is a vital component within the pneumatic braking system of heavy commercial vehicles. It is engineered to provide consistent air pressure through high-strength components, ensuring the reliability of the braking and auxiliary air systems. The unit features a water-cooled valve plate and an integrated ESS feature to maintain optimal thermal stability during continuous operation.

Compatible vehicles and engines

Designed specifically for Volvo NL12 trucks equipped with D12A engines, this unit meets strict technical requirements. It features a Ø88.00 cylinder bore and a 50 mm stroke, providing a swept volume of 608cm³. The assembly includes an M26x1,5 air outlet port and an M22x1,5 unloader port to facilitate seamless integration into the existing air circuit.

Installation and maintenance

For workshop technicians performing installation, ensure the water inlet and outlet ports (M16x1,5) are correctly connected to the engine cooling circuit. Proper torque application on the M26x1,5 outlet thread is essential to prevent leaks. Regular inspection of the through drive mechanism and water-cooled components is recommended to maintain system efficiency.

System performance

This compressor is an ideal replacement for heavy commercial vehicle maintenance, ensuring that air pressure delivery remains stable under demanding service conditions. Check the compatibility list.

OE cross-reference

1300 050 005 (Twin Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 8112851.