About this item Third-Party Tested Efficiency: Independent testing rates it at 96.92 percent efficiency down to 3 microns, so the number is verified rather than claimed. Confirms Your Fit: Built for 2001-2016 Chevrolet/GMC 6.6L Duramax 2500HD, 3500HD. Use the fitment card on this page to confirm your exact year and configuration before ordering. How It Works: Doc's Fuel Filters remove contaminants like separate water from dirt, rust, and debris, protecting fuel system components and ensuring peak engine performance. Interchange: AC/Delco TP3018, Wix 33960, Baldwin BF46062, Premium Guard DF6117, Purolator F56117. Confirm your part number before ordering. Service Interval: Change according to your vehicle's manufacturer warranty. Fuel Filters should be changed every 5,000 to 10,000 miles, or 15,000 maximum. › See more product details