85000491 SP1 Volvo Compatible Twin Cylinder Compressor

What does a twin cylinder compressor do?

This twin cylinder compressor serves as a critical engine-driven component within the pneumatic braking system of heavy commercial vehicles. By utilizing two piston-cylinder assemblies, it provides a higher air output compared to single-cylinder units, ensuring faster reservoir inflation for demanding applications. This specific unit is designed with high-strength components to withstand rigorous duty cycles.

Vehicle and engine compatibility

This component is specifically compatible with Volvo NH12 trucks equipped with D12C engines. It is an essential replacement part for maintaining optimal air pressure in the braking and pneumatic systems of these heavy-duty vehicles.

Installation and maintenance guidance

Installation should be performed by a qualified workshop technician to ensure correct alignment of the through drive gear and proper connection of the water ports (M16x1.5) and air ports (M26x1.5). Regular checks of the water cooling lines and air inlet ports (Ø35) are recommended to prevent system failures.

Selection and replacement

When replacing this unit, always verify the mounting flange and port locations against the original equipment to ensure a precise fitment within the engine compartment.

OE cross-reference

1300 185 002 (Twin Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 85000491SP1.