Cummins 4BTA3.9-C125 Engine Parts, DCEC 4BTA3.9-C125 Engine Parts Catalogue, Cummins 4BTA3.9-G2 Parts Catalogue Part No. Part Name Part No. Part Name Accessory Drive Pulley Front Drive Adapter AD9003 Accessory Drive Pulley AF9006 Front Drive Adapter 3919624 Accessory Drive Pulley 3914494 CRANKSHAFT PULLEY Crankshaft 3903857 SCREW, HEX FLANGE HEAD CAP BP9073 …