AirDog A4SPBD153 FP-100-4G 100GPH Lift Pump for 98.5-04 Dodge Ram 2500/350

Vehicle Fitment

• 1998.5-2004 Dodge Ram 2500/3500 (5.9L 24V Cummins Diesel, VP44 & early CP3 with in-tank fuel pump)

Features

• AirDog FP-100-4G diesel lift pump & air/fuel separation system
• 100 GPH (gallon per hour) high-flow lift pump for stock to moderate builds
• Proven 4G motor technology delivers quiet and reliable operation
• Separate water and particulate filtration for cleaner fuel delivery
• Pumps air and vapor back to fuel tank for smoother injection performance
• Frame-rail mounting with included sandwich plate bracket
• Bypasses factory fuel filter and in-tank pump for consistent fuel supply
• Includes complete wiring, plumbing, and installation hardware

Specifications

• Part Number: A4SPBD153
• Flow Rate: 100 GPH (gallon per hour)
• Motor: 4G gerotor style diesel lift pump
• Pressure Output: ~15-17 psi typical operating pressure
• Compatibility: 1998.5-2004 Dodge Ram w/ 5.9L Cummins and in-tank fuel pump
• Pump Type: Lift pump with integrated air/fuel separation
• Mounting: Frame rail using sandwich plate & 1/2" draw straw suction
• Return Line: Fuel/air return routed via filler neck tee

Included Components

• 1x AirDog FP-100-4G 100GPH lift pump assembly
• 1x Frame rail bracket & sandwich plate
• 1x 1/2" draw straw suction tube
• 1x Wiring harness with relay and connectors
• Fuel lines & fittings with quick connect/O-ring interfaces
• Fuel filter & water separator elements
• Hardware pack (bolts, clamps, ties) and install manual

Product Description

The AirDog A4SPBD153 FP-100-4G Lift Pump 100GPH fuel system is engineered for 1998.5-2004 Dodge Ram 2500/3500 trucks equipped with the 5.9L 24-valve Cummins diesel and an in-tank fuel pump. This complete aftermarket lift pump system replaces the stock fuel supply path with a dedicated high-flow unit that draws fuel through an integrated air/fuel separator and water filtration system. By removing entrained air, water, and contaminants before fuel reaches the injection pump (VP44 or early CP3), the AirDog improves throttle response, consistency of injection timing, and overall engine reliability.

Designed for stock to moderate performance levels, the FP-100-4G delivers a reliable 100 GPH flow rate, mounts easily to the frame rail using the included sandwich plate and suction straw, and returns unused fuel and air to the tank via a filler neck tee. The 4G motor technology ensures quiet operation and long service life while helping maintain stable fuel pressure at the pump inlet. Complete with all necessary plumbing, wiring, brackets, and hardware, this AirDog kit provides a robust upgrade for Cummins diesel owners seeking improved fuel delivery and engine protection without major fuel system alterations.