PureFlow AirDog A7SPBD254 AirDog II-5G DF-100-5G 100 GPH Diesel Lift Pump Fuel Air Separation System

The PureFlow AirDog II-5G DF-100-5G (A7SPBD254) is a complete diesel lift pump and fuel/air separation system designed for the Dodge/RAM Common Rail Cummins platform. Delivering 100 gallons per hour (GPH), this system is purpose-built for stock to moderately modified trucks seeking improved fuel delivery, cleaner fuel, and stronger engine performance. Manufactured in the USA, the AirDog II-5G represents the latest generation of PureFlow's proven fuel system technology.

The II-5G generation introduces the industry-first integrated diaphragm fuel pressure regulator, allowing precise fuel pressure adjustability with better fuel flow under pressure. The regulator can also be boost compensated to prevent pressure drops during wide-open throttle events (boost compensation kit sold separately). The system retains the trusted demand-flow capability of earlier AirDog II models and uses the same proven quiet, self-aligning, low-amperage motor technology.

Key Features:

• 100 GPH flow rate — ideal for stock to moderately modified diesel trucks
• Integrated adjustable diaphragm fuel pressure regulator — first of its kind on a diesel FASS system
• Frame-rail mount using the included sandwich plate mounting system
• Fuel Module Upgrade Kit included — installs in the OEM fuel basket, pulls fuel through a factory-style 1/2" bulkhead fitting, bypassing the factory in-tank lift pump
• Air/vapor return routed back to tank through the factory 3/8" suction line (after module modification)
• Patented air separation combined with a water separator (WS100) and 2-micron fuel filter (FF100-2) for superior fuel cleanliness
• 12-gauge wiring harness from battery to motor — upgraded from previous generations
• Metri-Pack 280 connector replaces the older Deutsch 2-pin connector for higher current flow with less heat buildup
• All additional harness connectors are weatherpack sealed for protection against the elements
• Larger ports than stock for increased flow and reduced restriction
• Addresses common fault codes including P0087 and P1093 (low fuel rail pressure)
• Made in the USA

What's Included:

• AirDog II-5G DF-100-5G lift pump assembly
• FF100-2 fuel filter and WS100 water separator
• Relay control wiring harness
• Fuel Module Upgrade Kit
• All required fuel fittings and fuel lines
• Mounting brackets and hardware
• Full-color installation manual

Cross-reference: A6SPBD254 (superseded part number). UPC: 813094015542.