20382347 S3 Crankshaft Flange for Volvo FH12

The compressor crankshaft flange acts as the essential connecting element that links the air brake compressor's crankshaft to the engine drive. By carrying the bearing and seal seat on the drive side of the crankshaft, this component jointly undertakes the centering, sealing, and load transfer duties between the housing and the crankshaft. This ensures that the drive mechanism, whether gear, belt-pulley, or coupling, reaches the crankshaft in a perfectly centered position.

This specific component is designed for Volvo FH12 trucks, including variants such as the FH 12/340, FH 12/460, FH 12/380, FH 12/420, and FH 12/500. It is built to withstand heavy-duty commercial service conditions while maintaining precise alignment within the air brake compressor system.

For workshop technicians performing maintenance, it is vital to confirm that the pilot diameter, bolt hole circle, and seal seat size match the existing part. If these dimensions are mismatched, the component may cause rapid leakage or excessive vibration even if it appears to fit during installation. Always verify the housing casting number to ensure perfect fitment.

Consult your authorized distributor for more information.

OE cross-reference

13 01 13 (Compressor Crankshaft Flange) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 20382347S3.