Doc's Diesel Oil Filters: Doc’s Diesel Oil Filters are designed for synthetic, conventional, and blended oil tyes. Doc’s Diesel Oil filters use a durable construction and high-flow synthetic blend media to ensure premium form, fit, and function to meet the manufacturer’s recommended service intervals. New vehicle warranties stay in effect when Doc's Diesel filters are installed correctly and according to engine manufacturer's recommendations. Product Details: Rigorously tested for efficiency, capacity, and burst strength. Durable construction, high-flow filter media OE design, fit, and function that meets/exceeds OEM Requirements Engineered for Synthetic, Conventional, and Blended Oil Types Spring Activated Relief Valve *When Applicable Anti-Drain Back Valve helps prevent engine dry start *When Applicable Vehicle Applications: • 2001-2019 Chevrolet/GMC 6.6L Duramax 2500HD/3500HD Crossover #'s: • Doc's D5399 Oil Filter: GM 88917036, AC/Delco PF2232 - Wix 57202 - Baldwin B1441 - Premium Guard PG5399 - Purolator L35399