21353457 Compatible Volvo NH12 D12C Compressor

What does a single cylinder compressor do?

This single cylinder compressor serves as a critical component within the pneumatic braking system of heavy commercial vehicles. By utilizing a water-cooled design and a high-strength construction, it maintains stable air pressure even under demanding operating conditions. The unit features a Ø85.00 mm bore and a 62 mm stroke to provide consistent swept volume performance.

Vehicle and engine compatibility

This specific model is engineered for Volvo NH12 trucks equipped with D12C engines. It integrates seamlessly with the vehicle's existing cooling and pneumatic architecture to ensure optimal system pressure. The design includes an ESS feature and a water-cooled valve plate to enhance thermal management during continuous operation.

Installation and maintenance guidance

Technicians should verify the M26x1.5 air outlet port and the M16x1.5 water inlet/outlet ports during installation to ensure leak-free performance. Regular inspection of the unloader port and cooling connections is recommended to prevent system pressure drops in the brake circuit.

System reliability and selection

When replacing this unit, ensure that the water cooling lines are clear and the mounting surface is prepared according to OEM specifications to maintain long-term reliability.

OE cross-reference

1300 025 001 (Single Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 21353457.