PAI Industries is a specialist manufacturer of aftermarket engine parts for heavy-duty diesel engines, producing pistons, liners, gasket sets, bearings, and related hard parts for Cummins, Detroit Diesel, Caterpillar, and other major commercial engine platforms. Their parts are engineered to OEM dimensional specifications and are a trusted choice for engine rebuilds and major repair work. Browse PAI Industries engine parts compatible with Peterbilt truck engine configurations.