7200 851 009 Crankshaft for WABCO Air Brake Compressors

What does a compressor crankshaft do?

The compressor crankshaft serves as the central rotating component within the air brake compressor, converting reciprocating motion into the rotational force required for pneumatic compression. This high-strength component is essential for maintaining consistent air pressure within the braking system of heavy commercial vehicles.

Compatible vehicles and engines

This part is designed for use in air brake compressors fitted to a wide range of heavy-duty vehicles, including Volvo models such as FH, FM, and VNL, as well as Mack trucks like the Granite, Pinnacle, and Anthem. It is also compatible with Renault Trucks D and Magnum series engines. These components are vital for maintaining the integrity of the pneumatic circuit under high-pressure operating conditions.

Installation and maintenance

When replacing the crankshaft, technicians should inspect the connecting rod and bearings to ensure optimal rotational balance. Proper installation according to the vehicle service manual is required to prevent vibration or uneven wear in the compressor assembly. This component ensures the long-term reliability of the air brake system during heavy-duty service.

System performance

Check the compatibility list.

OE cross-reference

7200 851 009 (Compressor Crankshaft) is the equivalent of the WABCO OE number. This part directly replaces WABCO OE number 9121126904.