QSM11 Cummins Engine Piston Assembly 4022533/4024941 Parts Catalog Ref No. Part Name Part No. Required 　 Engine Piston Assembly 4022533/4024941 6 1 Piston Top 4022532 1 2 Piston Skirt 4070653 1 3 Compression Piston Ring 3893752 6 4 Oil Piston Ring 3102367 6 5 Compression Piston Ring 3899413 6 　 Engine Connecting Rod 4083569 6 6 Engine Connecting Rod 3896970 …