AirDog Diesel Fuel Air Separation Systems

AirDog Diesel Fuel Air Separation Systems

AirDog builds the most recognized Fuel Air Separation Systems in the diesel performance industry, hand-assembling every unit to ensure consistent quality for owners of Cummins, Duramax, and Powerstroke-powered trucks. The AirDog system separates entrained air and vapor from diesel fuel before it reaches the injection pump, protecting expensive fuel system components and delivering more consistent fuel pressure for better performance under load.

Popular Upgrades

The AirDog II-5G is the flagship system, featuring an integrated diaphragm fuel pressure regulator for finer pressure adjustability and improved flow at the pump. With larger porting to reduce cavitation and improved 12-gauge wiring harnesses with weather-sealed connectors, the II-5G is the choice for owners who want the latest generation technology. The system retains AirDog's proven Demand Flow operation, recirculating unused fuel back through the filter base for clean, vapor-free delivery to the injectors.

Why do diesel trucks need a fuel air separation system?

Stock diesel fuel systems can allow air and vapor to reach the injection pump, causing inconsistent fuel pressure, rough running, and accelerated wear on precision injection components. AirDog removes this air before it can cause problems, extending the life of the injection pump and injectors while improving fuel delivery consistency under hard use and maximum load.

What trucks does AirDog support?

AirDog makes systems for the major diesel pickup platforms including the Dodge/Ram Cummins 5.9L and 6.7L, GM Duramax 6.6L, and Ford Powerstroke 7.3L, 6.0L, 6.4L, and 6.7L. Specific fitment varies by model year, so check the product listing for your exact truck.

Browse the full AirDog catalog here, or explore related categories including exhaust systems, air intake systems, and suspension upgrades.