Cummins QSZ13 Engine Parts, DCEC QSZ13 Engine Parts Catalogue, Cummins QSZ13 Parts Catalogue Part No. Part Name Part No. Part Name Wiring Accessories Air Compressor 3685699 Clip 3678873 Plug, Threaded 3900629 Screw, Hex Flange Head Cap 3678786 Seal, O Ring 4999868 Harness, Wiring 3678791 Plug, Threaded Alternator 3678921 Plug, Threaded 2874279 Alternator 3678912 …