DOC'S DIESEL COMBO KITS - Doc’s Diesel Combo Kits save you time and money by giving you the filters you need in one convenient package. No more running around trying to find the right parts. Just grab a kit and get the job done! Swapping filters on time keeps your truck running strong and efficient, and with our Combo Kits, it’s easier than ever. FITMENT - Compatible with Ford 6.7L Powerstroke F250, F350, F450 2017-2019 INTERCHANGE - Doc's Diesel Ford 6.7L Powerstroke Filter Combo Kit 2017-2019 includes (1) Fuel/Water Separator (DFD4625) - Replaces Motorcraft FD4625, Replaces Baldwin PF46174, Replaces Premium Guard DF4624K, Replaces Purolator F71448. (1) Oil Filter (D6128) - Replaces Motorcraft FL2051, Replaces Wix 57151, Replaces Baldwin B7379, Replaces Premium Guard PG6128, Replaces Purolator L46128. (1) Engine Air Filter (DPA10580) - Replaces Motorcraft FA1927, Replaces Wix WA10679, Replaces Baldwin PA10061, Replaces Premium Guard PA8219, Replaces Purolator A48219. (1) Cabin Air Filter (D3806) - Replaces Motorcraft FP79, Replaces Wix WP10266, Replaces Baldwin PA10103, Replaces Premium Guard PC8214 THIRD PARTY TESTING - Doc's Fuel/Water Separator (DFD4625): 3 Micron @ 98.76% Efficiency Rating. Doc's Oil Filter (D6128): 25 Micron @ 99% Efficiency Rating. Doc's Engine Air Filter (DPA10580): 99.25% / 344.2G Dust Holding Capacity. Doc's Cabin Air Filter (D3806): Electrostatic media stops particles down to .001 Microns REPLACEMENT GUIDELINES - Above all recommendations, change according to your vehicle’s manufacturer's warranty. Fuel/Water Separators: Every 5,000-10,000 miles or 15,000 miles maximum. Oil Filters: Every 5,000-7,000 miles or 10,000-15,000 miles maximum. Engine Air Filters: Every 5,000-10,000 miles or 12,000 miles maximum. Cabin Air Filters: Every 15,000 miles or 12 months maximum. Doc’s Diesel Combo Kits save you time and money by giving you the filters you need in one convenient package. No more running around trying to find the right parts. Just grab a kit and get the job done! Swapping filters on time keeps your truck running strong and efficient, and with our Combo Kits, it’s easier than ever.