The BEST Cummins/Duramax CAT Fuel Filter Kit Available Our Diesel Fuel Filter Kits were developed to be an affordable solution for diesel truck owners to protect them against injector and pump failures in an increasingly bad fuel market. We are just normal guys in a small shop in Oregon that want to help you protect your truck, but not break the bank doing it. Cummins. Powerstroke. DuramaxCummins · Duramax · Filters and Parts Which aftermarket fuel filter kit to get? - Dodge Cummins wwwinsforum››3rd Gen. PowertrainDec 02, 2010the cylinder head mount fuel filter comes with the big line kit, which is nice. As for a frame mounted fuel/water seperator i believe they only sell a 20 micron fleetgaurd, which is what I have. the 2 micron is only a fuel filter.