Cummins 4BTA3.9-GM65 Engine Parts, DCEC 4BTA3.9-GM65 Engine Parts Catalogue, Cummins 4BTA3.9-GM65 Parts Catalogue Part No. Part Name Part No. Part Name Aftercooler Water Plumbing Alternator 4941640 Aftercooler Tube EE9356-01 Alternator 3918607 Elbow Hose 5331999 Alternator 4941648 Elbow Hose EH97510 Alternator Drive 5313460 Plain Hose 3282081 Hexagon Flange Head Cap Screw 3934712 Aftercooler Tube …