PureFlow AirDog A4SPBD153 FP-100-4G Fuel Air Separation System 100 GPH

The PureFlow AirDog FP-100-4G (A4SPBD153) is a high-performance fuel air separation system designed for 1998.5–2004 Dodge Ram trucks equipped with the 5.9L Cummins diesel engine and an existing in-tank fuel pump. This system delivers clean, air-free, vapor-free fuel directly to the injection pump, maximizing diesel engine efficiency, performance, and longevity.

The AirDog FP-100-4G features a robust 100 gallons-per-hour (GPH) pump output, ensuring a consistent and reliable fuel supply even under heavy load, towing, or performance-tuned applications. By removing entrained air, vapor, and contaminants before they reach the injection system, the AirDog helps protect high-precision fuel system components from premature wear.

Key Features:

• 100 GPH pump capacity for high-demand diesel applications
• 4G (4th Generation) design with improved filtration and sealing over previous generations
• Removes air, vapor, and water from the fuel supply before it reaches the injection pump
• Designed for trucks with an existing in-tank fuel pump — draws from the OEM in-tank unit
• Includes 2-micron fuel filter and air/fuel separator
• Spin-on filter elements for easy, tool-friendly servicing
• Helps improve fuel economy, throttle response, and overall combustion efficiency
• OEM-quality fittings and pre-formed lines for a clean, professional installation
• Direct-fit application for 1998.5–2004 Dodge Cummins platforms

The AirDog FP-100-4G is an ideal upgrade for Cummins diesel owners looking to protect their fuel system investment and support stock or lightly modified engine builds. Manufacturer Part Number: A4SPBD153.