1300 090 004 Twin Cylinder Air Compressor — VOLVO

This heavy-duty twin cylinder air compressor is engineered to provide consistent pneumatic pressure within the braking and suspension systems of heavy commercial vehicles. Designed with a high-strength structure, it utilizes a water-cooling mechanism to maintain optimal operating temperatures during intensive use. The unit features a Ø88.00 cylinder bore and a 50 mm stroke, delivering a total swept volume of 608cm³ for efficient air compression.

1300 090 04 is the OE equivalent of the KNORR-BREMSE LP4985 SP2 and VOLVO 20429343 SP2, 3173001 SP2, 8113405 SP2, and 85000066 SP2 air compressors used in VOLVO and KNORR-BREMSE systems. This component ensures seamless integration with original equipment standards, maintaining high performance in demanding environments.

The installation process requires precision, particularly regarding the water inlet and outlet ports (M16x1,5) and the air inlet port (Ø29). Workshop technicians should verify the through-drive alignment and ensure the water-cooled valve plate is correctly seated to prevent leaks or pressure drops. Regular maintenance of the cooling lines and checking the M22x1,5 unloader port functionality is recommended to ensure long-term system reliability.

For specialized workshop service, this unit's technical configuration includes an ESS feature and a specialized M26x1,5 air outlet port to match standard heavy vehicle pneumatic architectures. It is specifically developed for heavy commercial vehicle applications where high-pressure stability is critical.