7.3L Powerstroke '99-'03

Air Dog II Fuel System Fuel Air Separator from Pure Flow Diesel Improves Fuel Economy and Mileage, Optimizes Engine Performance, Provides Longer Injector Life, Improves Throttle Response, Removes Air from Fuel Lines Resulting in Quieter Running Engine!
From the makers of the Original Air Dog Fuel Air Separation System.

This patented fuel system efficiently removes air/vapor from your 
diesel fuel for improved fuel economy and performance.

The AirDogII® Fuel/Air Separation System is a one of a kind product that features Demand Flow and an Adjustable Regulator that lets you fine tune your fuel system for increased fuel economy, power, and performance!