Build your 1998.5-2004 Dodge/Ram 5.9L Cummins fuel-supply setup around the AirDog I 4G FP-100-4G. This 100 GPH AirDog fuel system combines an application-specific lift-pump installation with an air/vapor return circuit.
Key details
- Manufacturer part number: A4SPBD153
- Series: AirDog I 4G
- Model: FP-100-4G
- Nominal flow rating: 100 GPH
- Fuel type: Diesel
- Application: 1998.5-2004 Dodge/Ram 5.9L Cummins
- Pump configuration: With In-Tank Pump
- Engine family: Cummins
- Valvetrain: 24V
- Sold as: Kit
- Country of origin: US
- Included filtration: 2-micron fuel filter and water separator, as listed in the linked application manual
Fitment and ordering notes
- Application range: 1998.5-2004 Dodge/Ram 5.9L Cummins. Confirm the engine and existing fuel-system configuration before ordering.
- This is the with in-tank pump version. In-tank-pump conversion history matters, not just the truck's model year.
- The 1998.5 starting point refers to the 24-valve application, not early-1998 12-valve trucks.
Installation overview
- Mounts to the frame rail using the supplied sandwich plate mounting system.
- The pressure side connects directly to the VP44 or CP3 injection pump, bypassing the factory fuel filter housing.
- The AirDog Air/Vapor return is sent back to the tank through a filler neck tee.
- Requires the supplied WAP109 high-flow suction tube or a suitable aftermarket sump, rather than relying on an unmodified factory pickup.
- Kit hardware includes the pump/filter assembly, frame brackets, wiring, suction tube, hose, fittings and filler-neck return hardware.
- Retain the original engine fuel-return circuit. On early common-rail applications, bypassing the filter's supply path does not mean its return plumbing can simply be removed.
Tech tips
- Choose flow capacity around the complete fuel system and intended use; a GPH rating is not a guaranteed horsepower or fuel-economy gain.
- Use the exact kit's installation instructions for hose routing, electrical connections, priming, leak checks and operating-pressure verification.
- Confirm tank, pickup and filtration modifications before scheduling installation. The overview above does not replace the installation manual.
Installation reference
Application installation manual. Check the instructions supplied with the current kit for revision-specific hardware and settings.
Warranty and registration
The linked application manual describes a limited lifetime warranty for the original purchaser, subject to registration and proof of purchase within 30 days; otherwise it states one year. Filters and water separators are excluded. Review the applicable terms and register with AirDog.
California warning
CALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
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