AirDog A7SABD525 II-5G165GPH Fuel Sys 98.5-04 Dodge Ram 2500/3500 5.9L

Vehicle Fitment

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

Features

• AirDog II-5G 165 GPH (gallons per hour) diesel fuel lift pump
• Integrated diaphragm fuel pressure regulator (adjustable/boost compensatable)
• "Demand Flow" fuel recirculation design improving efficiency
• 4-bearing motor with intermediate shaft for quieter, reliable operation
• Air and water separation with high-efficiency filtration (2 micron)
• Includes heavy-duty 12-gauge wiring with Metri-Pack connectors
• Supplied sandwich plate mounting system for frame rail installation
• Delivers clean, high-volume fuel to injection pump to reduce cavitation

Specifications

• Part Number: A7SABD525
• Pump Flow Rate: 165 GPH / ~625 LPH
• Compatible Engines: 24-Valve 5.9L Cummins Diesel (VP44 & early CP3)
• Fuel Type: Diesel
• Pressure Regulator: Integrated diaphragm (adjustable 7-55 psi)
• Mounting: Frame rail with supplied sandwich plate
• Fuel Filtration: ~2 micron filter element
• Drivetrain Compatibility: RWD/4WD applications within fitment range

Included Components

• 1x AirDog II-5G DF-165-5G lift pump assembly
• 1x Fuel pressure regulator (integrated)
• 1x Fuel filter element (high-efficiency)
• 1x Sandwich plate mounting kit
• 1x 12-gauge wiring harness with connectors
• 1x Complete set of fuel lines and fittings
• 1x Installation hardware pack
• 1x Manufacturer installation manual

Product Description

The AirDog A7SABD525 II-5G 165 GPH Fuel System is a high-performance diesel fuel lift pump and air/fuel separation kit engineered specifically for 1998.5-2004 Dodge Ram 2500/3500 trucks equipped with the 24-valve 5.9L Cummins engine. Designed to replace the stock lift pump and improve the quality and consistency of fuel delivered to your engine's injection system, this AirDog system increases fuel flow and pressure stability while removing entrained air and water that can disrupt injector performance. :contentReference[oaicite:0]{index=0}

The II-5G system features an integrated diaphragm regulator that allows adjustable fuel pressure and boost compensation, along with a robust 4-bearing motor for quieter operation and increased longevity. Its demand flow design only supplies the needed fuel, recirculating unused fuel back through the filter base to maintain consistent delivery. This makes it ideal for moderately modified trucks or stock engines seeking enhanced reliability and throttle response. Complete with wiring, plumbing, hardware, and mounting components, this system offers a comprehensive replacement for your factory fuel delivery setup.

Fitment is confirmed through 2004 for the Dodge Ram 2500/3500 series with the 24V 5.9L Cummins engine; 2025 coverage is not applicable for this legacy platform. This pump supports RWD and 4WD variants within the stated model years.