85000491 SP1 VOLVO Twin Cylinder Air Compressor

The twin cylinder air compressor is a vital component within the pneumatic system of heavy commercial vehicles, responsible for maintaining consistent air pressure for braking and auxiliary functions. Engineered with high-strength components, this unit provides the necessary volumetric flow and durability required for intensive operational cycles in demanding environments.

85000491 SP1 is the OE-equivalent of the VOLVO 85000491 SP1 air compressor used in VOLVO heavy commercial vehicle systems. This specific model is characterized by its Ø85.00 cylinder bore and 62 mm stroke, delivering a swept volume of 704cm³. It is designed to operate with water-cooling systems to maintain optimal thermal stability during long-haul operations.

For workshop technicians, this unit features a through-drive design and includes an ESS feature for enhanced system reliability. The assembly involves a water inlet/outlet port of M16x1,5 and an air unloader port of M12x1,5. Regular inspection of the water-cooled valve plate and ensuring the integrity of the M26x1,5 air outlet connection is recommended during routine service intervals to prevent pneumatic leakage.

Maintaining the air brake compressor ensures the long-term reliability of the vehicle's braking performance. This part is engineered to meet strict technical requirements for compatibility with existing heavy-duty pneumatic architectures.