AirDog A4SPBD104 FP-150-4G Lift Pump 98.5-04 Dodge Ram 5.9L Cummins

Vehicle Fitment

• 1998.5-2004 Dodge/Ram 2500/3500 Series (5.9L 24V Cummins Diesel)

Features

• AirDog FP-150-4G diesel lift pump with integrated air/fuel separation
• 150 GPH (gallons per hour) flow rate for high-capacity fuel delivery
• Removes entrained air, water, and particulate contaminants from diesel fuel
• 1/2" draw-straw suction tube pulls fuel directly from tank for cleaner supply
• Bypasses factory in-tank pump and filter housing for direct feed to injection pump
• Frame-rail mounting with included sandwich plate bracket for secure fit
• Quiet and efficient 4G gerotor motor design for long service life
• Complete kit with wiring, hoses, fittings, and mounting hardware included

Specifications

• Part Number: A4SPBD104
• Flow Rate: 150 GPH (approx. 568 LPH)
• Compatible Engines: 5.9L 24V Cummins Diesel
• Fuel Type: Diesel
• Motor: 4G gerotor design
• Mounting Location: Frame rail using sandwich plate bracket
• Pressure Regulation: Base return regulator with recirculation return
• Drivetrain Compatibility: RWD/4WD within fitment years

Included Components

• 1x AirDog FP-150-4G lift pump assembly
• 1x Sandwich plate frame mounting bracket
• 1x 1/2" draw-straw fuel pickup tube
• 1x Wiring harness with relay and connectors
• 1x Fuel line kit with quick-connect fittings
• 1x Return filler neck tee and clamps
• 1x Fuel and water separator filter (replaceable)
• 1x Installation hardware kit and instructions

Product Description

The AirDog A4SPBD104 FP-150-4G Lift Pump is a high-capacity diesel fuel delivery and air/fuel separation system engineered for 1998.5-2004 Dodge and Ram 2500/3500 trucks equipped with the 5.9L 24-valve Cummins diesel engine. Designed to replace the factory low-pressure supply circuit, this lift pump draws fuel directly from the tank through the provided draw-straw suction tube and feeds clean, de-aerated fuel to the engine's VP44 or early CP3 injection pump. By removing entrained air, water, and contaminants, the AirDog helps improve throttle response, fuel economy, and overall injection system reliability.

Featuring a 150 GPH flow rate and proven 4G motor design, the FP-150-4G delivers ample fuel for stock to moderately modified diesel applications. The frame-rail mounting bracket and complete hardware kit simplify retrofitting ahead of the fuel tank, while the integrated air/fuel separation and return routing help maintain consistent fuel pressure and reduce vapor lock conditions. This makes the A4SPBD104 system an excellent upgrade for drivers looking to enhance performance and longevity of their Cummins diesel fuel system.

Fitment is confirmed for 1998.5-2004 Dodge/Ram 2500 and 3500 models with the 5.9L 24V Cummins diesel engine, supporting both RWD and 4WD drivetrains within the stated years. This lift pump system is ideal for improved fuel delivery and reliability on stock to moderately tuned diesel engines. 2025 fitment is not applicable for this legacy platform.