DOC'S DIESEL FUEL/WATER SEPARATORS - Doc's Fuel/Water Separators separate water from fuel and remove contaminants like separate water from dirt, rust, and debris, protecting fuel system components and ensuring peak engine performance. They optimize fuel flow and pressure, enhancing acceleration, fuel economy, and vehicle performance. With a focus on maximizing filtration media surface area, our high-quality filters come complete with o-rings as needed. INTERCHANGE - Replaces Mopar 68197867AA, Replaces Wix WF10112, Replaces Baldwin BF46031, Replaces Premium Guard DF99085, Replaces Purolator F51408 FITMENT - Compatible with 2013-2018 Ram 6.7L Cummins 2500, 3500, 4500, 5500 THIRD PARTY TESTED - 3 Micron @ 96.92% Efficiency Rating REPLACEMENT GUIDELINES - Above all recommendations, change according to your vehicle’s manufacturer warranty. Fuel/Water Separators should be changed every 5,000 to 10,000 miles, or 15,000 maximum. Doc's Fuel/Water Separators separate water from fuel and remove contaminants like separate water from dirt, rust, and debris, protecting fuel system components and ensuring peak engine performance. They optimize fuel flow and pressure, enhancing acceleration, fuel economy, and vehicle performance. With a focus on maximizing filtration media surface area, our high-quality filters come complete with o-rings as needed. INTERCHANGE: Replaces Mopar 68197867AA, Replaces Wix WF10112, Replaces Baldwin BF46031, Replaces Premium Guard DF99085, Replaces Purolator F51408. FITMENT: Compatible with 2013-2018 Ram 6.7L Cummins 2500, 3500, 4500, 5500