6BT5.9 Cummins Timing Pin 3903924 Parts Catalog Ref No. Part Name Part No. Required 　 Timing Pin Housing 3913995 1 1 Timing Pin 3903924 1 2 Retaining Ring 3904849 1 3 O-Ring Seal 3913994 1 4 Timing Pin Housing 3919683 1 5 Rectangular Ring Seal 3915772 1 6 Round Head Cap Screw 3907998 2 Above is the introduction of the …