AirDog II-5G DF-165 fuel system for the 2001-2016 Chevy/GMC Duramax 6.6L Diesel. This diesel lift pump mounts to the frame jig in front of the fuel tank for a clean looking installation PureFlow AirDog II-5G 2001-2016 Chevy Duramax DF-165-5G Fuel Pump. This system is one of our easiest installations. Our Duramax kits usually see the largest performance gains as these trucks do not come with a lift pump from the factory.