22306613 Volvo FM9 D9A Compressor Rod and Piston

What does a connecting rod and piston do?

The compressor connecting rod and piston assembly acts as the fundamental mechanical core within the air brake compressor, responsible for converting reciprocating motion into air pressure. These high-strength components are vital for maintaining optimal compressor output, ensuring quiet operation, and preventing excessive oil consumption during heavy-duty service.

Compatibility with Volvo FM9 engines

This specific kit is engineered for Volvo FM9 trucks, including models FM 9/260, FM 9/300, FM 9/340, and FM 9/380 equipped with D9A engines. It serves as a direct replacement for internal compressor components during a professional overhaul to restore pneumatic system efficiency.

Installation and maintenance guidance

For workshop technicians performing maintenance, replacing the piston and connecting rod together is the recommended approach to ensure proper compression. When inspecting the assembly, check the piston rings and pins to ensure the entire compression unit operates without leaks or mechanical play.

System performance and selection

Maintaining these internal components helps prevent systemic failures in the pneumatic braking system. Consult your authorized distributor to confirm exact fitment for your specific engine configuration.

OE cross-reference

8000 850 005 (Compressor Connecting Rod & Piston) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 22306613.