Keep your VP44‑equipped Cummins alive with the Alliant Power AP4943048 Fuel Transfer Pump Kit. This engine‑mounted replacement lift pump is built for 1998–2002 Dodge Ram 2500/3500 5.9L ISB trucks with the VP44 injection pump and delivers a steady 50 GPH at 10 PSI to protect your injection pump and maintain consistent fuel supply under load.
Engine‑mounted design; bolts in place of the factory pump.
Includes gaskets and jumper harness for a complete installation.
Rated at 50 GPH @ 10 PSI for reliable VP44 supply pressure.
Cross‑references OEM part numbers 3990082, 3990105, 4932707, 4935730.
WILL NOT FIT TRUCKS WITH IN TANK PUMP CONVERSION
AP4943048 is a complete, stock‑style fuel transfer pump kit tailored to VP44‑equipped 5.9L Cummins trucks, making it ideal for owners who want OE‑style reliability without the complexity of a full aftermarket fuel system. The pump mounts on the engine in the original location and ships with the necessary gaskets and jumper harness, simplifying installation and eliminating guesswork on fittings and wiring. With a flow rating of 50 gallons per hour at 10 PSI, it is sized to support factory‑style and mild performance setups while supplying the VP44 with the pressure it needs for long life and consistent fueling. This makes it a strong choice for daily drivers, work trucks, and tow rigs that need dependable fuel delivery on stock‑to‑mild builds.
Years: 1998–2002
Vehicle: Dodge Ram 2500 / 3500
Engine: 5.9L Cummins ISB with VP44 injection pump.
Mounting: Engine‑mounted lift/transfer pump.
Flow/pressure: 50 GPH @ 10 PSI.
OEM cross‑reference: 3990082, 3990105, 4932707, 4935730.
Protected VP44 pump life by maintaining proper inlet pressure and volume.
Restores reliable fuel delivery on aging or low‑pressure stock pumps.
Plug‑and‑play style solution including gaskets and jumper harness for straightforward installation.
Ideal for stock and lightly modified trucks that still use an engine‑mounted lift pump configuration.
A failing or weak lift/transfer pump on a VP44 truck can cause:
Hard starting, extended cranking, or stalling under load.
Loss of power, surging, or hesitation, especially when towing or accelerating.
Excessive VP44 pump noise due to low inlet pressure.
Potential diagnostic codes related to low fuel pressure or injection pump performance (exact DTCs vary by truck and gauge/monitor setup; many VP44 trucks only show symptoms without a specific code).
Replacing the failing lift pump with AP4943048 is a common first step before condemning the VP44 itself.
AP4943048 is supplied as a new Alliant Power fuel transfer pump kit and is typically covered by Alliant’s 2 Year limited warranty against defects in materials and workmanship.
Q: What trucks does AP4943048 fit?
A: It fits 1998–2002 Dodge Ram 2500/3500 5.9L Cummins ISB equipped with the VP44 injection pump, using an engine‑mounted lift/transfer pump.
Q: Is this a frame‑mounted or in‑tank style pump?
A: AP4943048 is an engine‑mounted transfer pump that replaces the stock pump in the original location, not an in‑tank or frame‑rail pump.
Q: Does the kit include everything needed to install?
A: The kit includes the pump, required gaskets, and a jumper harness, so you can reuse your existing lines and mounting hardware in most cases.
Q: Is this pump suitable for high‑horsepower builds?
A: It is designed as a stock‑replacement pump (50 GPH @ 10 PSI) and is best suited for stock or mildly modified trucks; higher‑power builds typically benefit from an upgraded external lift pump system.
Q: Is this a genuine Alliant Power part?
A: Yes, AP4943048 is a brand‑new Alliant Power fuel transfer pump kit, sold as new with no core charge.
This product fits the following vehicle configurations:
| YEARS | VEHICLE MFG | ENGINE MFG | ENGINE | APPLICATION | NOTES | FOOTNOTESE | NGINE SERIAL NUNMBER(S) | OEM CROSS-REFERENCE |
|---|---|---|---|---|---|---|---|---|
| 1998-2002 | Dodge | Cummins | ISB | with VP44 | N/A | 3990082, 3990105, 4932707, 4935730 |
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