AirDog A4SPBD103 FP-150-4G Lift Pump 94-98 Dodge Ram 5.9L Cummins

Vehicle Fitment

• 1994-1998 Dodge Ram 2500/3500 Series (5.9L 12-Valve Cummins Diesel)

Features

• AirDog FP-150-4G diesel lift pump with integrated air/fuel separation
• 150 GPH flow rate for improved fuel supply
• Removes entrained air, water, and particulate contaminants before delivery
• Frame rail mounting with included sandwich plate bracket
• 1/2" draw-straw suction tube pulls fuel directly from tank
• Direct feed to injection pump bypassing factory filter housing
• Quiet 4G motor design with proven durability
• Complete kit with wiring harness, fuel lines, fittings, and hardware

Specifications

• Part Number: A4SPBD103
• Flow Rate: 150 GPH (approx. 568 LPH)
• Compatible Engines: 5.9L 12-Valve Cummins Diesel
• Fuel Type: Diesel
• Motor: 4G gerotor design
• Mounting: Frame rail sandwich plate system
• Pressure Regulation: Base non-adjustable/high-flow return
• Drivetrain Compatibility: RWD/4WD within fitment years

Included Components

• 1x AirDog FP-150-4G lift pump assembly
• 1x Frame rail mounting bracket with sandwich plate
• 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
• 1x Fuel and water separator filter (replaceable)
• 1x Complete installation hardware pack

Product Description

The AirDog A4SPBD103 FP-150-4G Lift Pump is a high-flow diesel fuel delivery and air/fuel separation system designed for 1994-1998 Dodge Ram 2500 and 3500 trucks equipped with the 5.9L 12-valve Cummins diesel engine. This system replaces the factory low-pressure supply setup with a dedicated 150 GPH lift pump that draws fuel directly from the tank via the included draw-straw pickup, providing a clean and consistent fuel supply to the injection pump. By removing air, water, and contaminants before they reach the engine, the AirDog helps improve throttle response, fuel economy, and overall injection system longevity.

Featuring a rugged 4G motor and robust construction, the FP-150-4G supports stock to moderately modified diesel engines. Installation is simplified with the complete kit that includes a frame rail mounting bracket, wiring harness, hoses, fittings, and necessary hardware. The AirDog's integrated separator filters and return line routing help maintain proper fuel pressure while reducing vapor lock and fuel starvation under load.

Fitment is confirmed for 1994-1998 Dodge Ram 2500/3500 trucks with the 5.9L 12-Valve Cummins diesel engine. Both RWD and 4WD models within these years are supported. 2025 coverage is not applicable for this legacy platform.