2011-2015 6.7L Ford Powerstroke AFE 44-FF014 ProGuard D2 Fuel Filters set of 2. Deliver increased flow and efficiency that are demanded in the Diesel environment. These fuel filters use a synthetic media for maximum filtration and minimal flow restriction. aFe Pro-Guard D2 fuel filters have up to a 99% filter efficiency for maximum protection. This kit comes with both the chassis mount filter and the engine mount filter. This is a set of two filters.