20547525 S3 Crankshaft Flange for Volvo FM12 D12D

What does a compressor crankshaft flange do?

This crankshaft flange is a precision-engineered component designed to facilitate the drive mechanism within the air brake compressor. It plays a critical role in transferring rotational energy from the engine to the compressor assembly, ensuring consistent air pressure generation for the braking system. High-strength components are utilized to withstand the repetitive stresses encountered during heavy-duty operation.

Compatible Volvo FM12 and D12D applications

This specific flange is designed for Volvo FM12 trucks equipped with D12D engines, including models such as the FM 12/380, FM 12/460, and FM 12H/420 variants. It ensures seamless integration within the pneumatic system of these heavy commercial vehicles. The component is built to withstand high-pressure environments found in bus and truck braking systems.

Installation and maintenance guidance

When performing maintenance or repairs, technicians should verify the pilot diameter, bolt hole circle, and seal seat size to ensure perfect fitment. Correct installation is vital to prevent premature leakage or excessive vibration in the compressor unit. Proper alignment of the flange with the crankshaft is essential for long-term reliability during heavy-duty service.

Troubleshooting and selection

Consult your authorized distributor to confirm exact fitment for your specific engine configuration.

OE cross-reference

13 01 13 (Compressor Crankshaft Flange) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 20547525S3.