20478166 Single Cylinder, Air Compressor — VOLVO

The single cylinder, air compressor plays a vital role in the pneumatic systems of heavy commercial vehicles, providing the consistent air pressure required for braking and auxiliary functions. This high-strength component is designed to withstand demanding operating conditions, ensuring that the air brake system remains responsive and reliable during long-haul transport tasks.

20478166 is the OE-equivalent of the VOLVO 20478166 single cylinder, air compressor used in VOLVO heavy commercial vehicles. This unit features a cylinder bore of Ø85.00 mm and a stroke of 62 mm, producing a swept volume of 352cm³. It is specifically designed as a water-cooled (W) system to maintain optimal thermal stability during operation.

For workshop technicians performing maintenance or repairs, this compressor offers precise fitment with its M26x1,5 air outlet port and M16x1,5 water inlet/outlet ports. The integration of the ESS feature and through-drive capability ensures seamless assembly within the engine's mechanical architecture. Regular inspection of the water cooling lines and air ports is recommended to maintain peak performance in the vehicle's pneumatic circuit.