20774383 SP1 Volvo FM11 D11A Twin Cylinder Compressor

What does a twin cylinder compressor do?

This twin cylinder compressor is a critical component for the pneumatic braking system, providing the necessary air pressure for heavy commercial vehicle operations. Designed to withstand high-pressure environments, this unit ensures consistent air delivery to the braking and suspension systems through its robust internal construction and high-strength components.

Compatibility and technical specifications

This specific model is designed for use in Volvo FM11 trucks equipped with D11A engines. It features a water-cooled design with a water-cooled valve plate to manage operating temperatures effectively during long-haul transport. The unit is engineered with a Ø85.00 mm cylinder bore and a 56 mm stroke, delivering a swept volume of 636cm³ to meet demanding air requirements.

Installation and maintenance guidance

For correct installation, technicians should verify that the M26x1.5 air outlet port and M16x1.5 water ports match the existing vehicle setup. Ensuring the through drive and unloader port configuration aligns with the engine's requirements is vital for maintaining system integrity and preventing leaks in the pneumatic circuit.

Selection and replacement advice

When replacing an old unit, always confirm that the cooling type and port sizes are identical to the original equipment to avoid system mismatch. Consult your authorized distributor.

OE cross-reference

1300 190 012 (Twin Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 20774383SP1.