20774294 SP1 Compressor for Volvo D11A engines

What does a twin cylinder compressor do?

This twin cylinder compressor serves as a critical component within the air brake system, ensuring consistent air pressure for heavy commercial vehicle braking performance. Built with high-strength components, this unit is engineered to withstand intense thermal and mechanical loads during continuous operation.

Vehicle and engine compatibility

This specific model is designed for Volvo B11R trucks equipped with D11A engines. It features a Ø85.00 mm cylinder bore, a 56 mm stroke, and a 636cm³ swept volume. The unit is water-cooled (W) to maintain optimal operating temperatures and includes an integrated ESS feature for enhanced system reliability.

Installation and maintenance guidance

Technicians should ensure that all port connections are correctly aligned during installation. The air outlet port is M26x1,5, the water inlet/outlet ports are M16x1,5, and the air inlet port is Ø35. When replacing the unit, verify that the drive gear and mounting flange match the existing installation to ensure seamless integration.

Maintenance and troubleshooting

For optimal performance, regularly inspect the water cooling lines and air ports for any signs of leakage or debris buildup. Consult your authorized distributor.

OE cross-reference

1300 190 003 (Twin Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 20774294SP1.