Beefed Up Fuel Lift Pump For Cummins 4B 4BT 4BTA 6B 6BT 6BTA Engines Compatible With 1989 1993 Dodge 5.9L Diesel And 1992 1993 Ford LN7000 CF7000 F700 Freightliner FL70 FL80 FL60 Includes 3970880 4983584 3966154

Beefed Up Diesel Lift Pump for 4B-6B Engines & Heavy Trucks
✔️ Fits 4B-6B engine family; Single Pack included for easy swap

Premium heavy-duty diesel lift pump designed to boost fuel delivery and pressure in diesel engines used by trucks, construction gear, and agricultural equipment. It covers a wide range of 4B-4BT-6BTA engine families and matches multiple OEM part numbers for easy upgrades. Typical use is to provide consistent fuel flow to injectors for reliable starts, steady power, and improved cold-weather performance.

✅ Part numbers: 3970880, 4983584, 3966154, 3901425, 3904374, 3928143
✅ Replaces OEM numbers: 30-3455998, 3904374, 68047915AA, 84142216, 87319987, 87416017, J904374, J928143, J970880
✅ Compatibility: 4B-4BT-6BTA engine family; Dodge/Dodge-based lines; Ford LN7000/CF7000/F700 (1992-1993); Freightliner FL60/FL70/FL80 (1991-1993); AGCO White tractors; Case tractors
✅ Case/tractor range: 1085B, 1150E, 1150G, 1155E, 1840, 1845C, 1896, 2096, 40XT, 4390, 4390T, 450C, 455C, 480E, 480F, 5120, 5130, 5140, 5220, 5230, 5240, 5250, 550G, 550H, 570LXT, 580E, 580K, 580L, 580SK, 580SL

What is a heavy-duty diesel fuel lift pump used for in engine systems?

It helps maintain stable fuel pressure and reliable injector delivery across diesel powerplants.

- Handy fuel delivery for injectors under heavy loads
- Supports 4B-4BT-6BTA engine families and OEMs
- Replaces multiple OEM part numbers for easy upgrades
- Improves cold-start reliability and long-term fuel system health