20774383 SP1 Volvo VHD D13 Twin Cylinder Compressor

What does a twin cylinder compressor do?

This twin cylinder compressor serves as a critical component within the air brake system of heavy commercial vehicles, providing the necessary pressurized air for braking operations. Built with high-strength components, this unit is designed to maintain consistent pressure even under demanding duty cycles. The design incorporates a water-cooled valve plate to manage thermal loads effectively during continuous operation.

Compatibility with Volvo VHD

This specific model is compatible with Volvo VHD vehicles equipped with D13 engines. It features an air inlet port of Ø35, an air outlet port of M26x1,5, and an air unloader port of M16x1,5. The unit is equipped with an ESS feature and utilizes a through-drive configuration to ensure reliable power transmission from the engine.

Installation and technical specifications

For workshop technicians performing installation or maintenance, it is vital to verify that the water inlet and outlet ports (M16x1,5) align with the engine's cooling lines. Given the precision of the Ø85.00 bore and 56 mm stroke, ensuring clean coolant flow and secure mounting is essential for preventing pressure drops or overheating in the braking circuit.

Maintenance and selection guidance

When replacing this unit, technicians should always verify that the gear drive and port locations match the original equipment to ensure seamless integration within the vehicle's pneumatic system.

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.