20478151 SP1 VOLVO (7600 850 008, 3161258, 7403161258) Twin Cylinder

The technical function of this twin cylinder air compressor is to provide a reliable air supply for the braking system of heavy commercial vehicles. Designed with high-strength components, this unit ensures consistent pneumatic pressure through its specialized two-cylinder architecture and water-cooled valve plate system.

20478151 SP1 is the OE-equivalent of the VOLVO 20478151 SP1 air compressor used in VOLVO heavy commercial vehicles. This component is fully compatible with the reference numbers 7600 850 008, 3161258, and 7403161258 (with gear). It is engineered to meet strict OEM specifications to ensure seamless integration into the existing-system architecture.

For workshop technicians, this unit features a water-cooled design (W) with inlet and outlet ports sized at M16x1,5 to manage thermal loads effectively. The installation requires precise alignment of the M26x1,5 air outlet port and the Ø35 air inlet port. Regular maintenance of the water cooling circuit is essential to maintain the longevity of the high-strength components during heavy-duty service cycles.

This twin cylinder model is specifically designed for heavy commercial vehicle applications where consistent air output is critical. The inclusion of the ESS feature and a dedicated water-cooled valve plate provides an additional layer of operational stability under demanding workloads.