6CT8.3 Cummins Engine Piston 3926963 Parts Catalog Ref No. Part Name Part No. Required 1 Piston Ring Set 3802429 6 2 Retaining Ring 3920692 12 3 Engine Piston 3926963/3802462 6 Engine Connecting Rod 3901383 6 4 Bushing 3913990 1 5 Engine Connecting Rod 3924350 1 6 Connecting Rod Bolt 3928870 2 7 Connecting Rod Nut 3934864 2 8 Piston Pin …