Image is for illustration purposes only. Actual part may vary.

940581

AIR COMPRESSOR /PAI

This is a 318 cc single-cylinder air compressor for heavy‑duty truck air brake systems. It bolts to the engine and supplies compressed air for braking, suspension, and other pneumatic accessories. You replace it when the compressor no longer builds adequate pressure, leaks oil or air, or becomes excessively noisy. The PAI 940581 is an aftermarket replacement for several Mack, Rockwell, and Volvo OEM compressor part numbers.