QSK45 Cummins Connecting Rod Bearing 3643984 Parts Catalog Ref No. Part Name Part No. Required Piston 3647471 12 Engine Connecting Rod 3644676 1 1 Engine Connecting Rod 3640515 1 2 Bushing 3644403 1 3 Fracture Resistant Screw 4007226 4 Pin Dowel 69558 2 4 Connecting Rod Bearing 3643984 1 5 Connecting Rod Bearing 3643984 1 6 Piston 3645958 1 …