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 Ram 6.7L Cummins 2500, 3500, 4500, 5500 2013-2018 INTERCHANGE - Doc's Diesel Dodge RAM 6.7L Cummins Filter Combo Kit 2013-2018 includes (1) Fuel/Water Separator (DGF410) - Replaces Mopar 68197867AA, Replaces Wix WF10112, Replaces Baldwin BF46031, Replaces Premium Guard DF99085, Replaces Purolator F51408. (1) Fuel Filter (DGF401) - Replaces Mopar 68157291AA, Replaces Wix WF10255NP, Replaces Baldwin PF9870, Replaces Premium Guard DF8606, Replaces Purolator F36294. (1) Oil Filter (D5335) - Replaces Mopar 05083285AA, Replaces Wix 51607, Replaces Baldwin BT7349, Replaces Premium Guard PG5335, Replaces Purolator L45335. (1) Engine Air Filter (DPA6314) - Replaces Mopar 53034051AB, Replaces Wix 46930, Replaces Baldwin PA4318 THIRD PARTY TESTING - Doc's Fuel/Water Separator (DGF410): 4 Micron @ 98.49% Efficiency Rating. Doc's Oil Filter (D5335): 25 Micron @ 99% Efficiency Rating. Doc's Engine Air Filter (DPA6314): 99.25% / 344.2G Dust Holding Capacity REPLACEMENT GUIDELINES - Above all recommendations, change according to your vehicle’s manufacturer's warranty. Fuel Filter/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. 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.