PUMP,FUEL INJECTION C3977539 Parts Number 3029631 Parts Name PUMP,FUEL INJECTION C3977539 Brand Cummins Cummins Models 4B3.9, 6B5.9, 6C8.3, ISF2.8, ISF3.8, QSB4.5 Related Posts PUMP,FUEL INJECTION 3969547 Cummins QSM11 Fuel Pump – 3655100 Cummins QSM11 Fuel Pump – 4951477 Cummins QSM11 Fuel Pump – 3417677X Camshaft C3929039