ECOGARD XF55590 Diesel Fuel Filter - Premium Replacement Fits Ford F-250 Super Duty, F-350 Super Duty, Excursion, F-450 Super Duty, F-550 Super Duty COMPATIBILITY with 2003-2007 Ford F-250 Super Duty, 2003-2007 Ford F-350 Super Duty, 2003-2005 Ford Excursion, 2003-2007 Ford F-450 Super Duty, 2003-2007 Ford F-550 Super Duty. HIGHLY EFFICIENT FILTERING AND WATER SEPARATION to meet modern diesels engine demands for optimum fuel flow that is free of contaminants and water. PROTECT YOUR ENGINE against damage by keeping particles away from the fuel injector or carburetor. IMPROVE ENGINE PERFORMANCE with ECOGARD Diesel Filters. A clogged or dirty diesel fuel filter can result in difficulty starting, hesitation upon accelerating, decreased fuel economy, and rough idling. PRECISE INLET/OUTLET CONNECTIONS for trouble-free installation. SPECIFICALLY ENGINEERED AND TESTED for original equipment diesel filters fit, form, and function. Meets the requirements for maintaining new vehicle warranties. Replaces: FRAM CS9667A Purolator F55590 WIX 33899 Motorcraft FD4616 OE 3C3Z-9N184CB.