3042F841 (3916523) Rebuilt Delphi 4-390 Injection Pump fits Cummins Case 580 Super K Backhoe Engine. 3042F841R (3042F840; 3042F842; 3042F843; 3042F844; 3916523; U3042F841; A71L/1100/1/2400) Rebuilt CAV Lucas Delphi 4-390 4 Cylinder Type 772 Injection Pump Fits Cummins Case 580 Super K Backhoe CDC 4B3.9 JI CASE NEUSS (BACKHOE) CDC 4B3.9 Engine. Goldfarb & Associates specialize in diesel injection pumps, injectors and turbochargers. We deal in used, remanufactured, and new parts for truck, automotive, agricultural, construction and industrial markets. We supply diesel engine parts for Caterpillar, Cummins, Detroit Diesel, Ford, Perkins, John Deere, International, Mercedes, and many more engine applications.