Cummins 3820566 Camshaft Bushing

The Cummins 3820566 camshaft bushing is a critical valve train component designed for L10, M11, ISM, and QSM11 series diesel engines. It serves as a replaceable bearing surface for the camshaft journals, ensuring precise alignment and reduced friction during engine operation. This part is manufactured to OEM specifications using copper-based or aluminum alloy materials with Babbitt lining for optimal wear resistance and conformability. The bushing is sold individually; a complete engine set requires seven units (refer to kit part number 3820566K or PAI 151565). It directly replaces Cummins OEM part numbers 2878168 and 3017325. Applications include heavy-duty trucks, construction machinery such as Komatsu excavators, Doosan-Daewoo MEGA 500-V Tier-II loaders, and XCMG XG470 wheel loaders equipped with Cummins M11 powerplants. Installation requires proper line boring or reaming to final size after press-fit into the cylinder block or head.