The PureFlow AirDog II-4G A6SPBC259 DF-100-4G Air/Fuel Separation System for your 2001-2010 GM 6.6L Duramax is the next generation in the fuel delivery system, resulting in a long lasting, efficient and quiet lift pump. The compact AirDog II-4G provides the most effective technology designed specifically for diesel pickups to remove water, particulates, vapor and entrained air from diesel fuel, all while increasing power and performance.  

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