Replacement For: 2005-2012 Chevy Silverado 2500 HD 2007 Chevy Silverado 2500 HD Classic 2005-2006 Chevy Silverado 3500 2007 Chevy Silverado 3500 Classic 2007-2012 Chevy Silverado 3500 HD 2005-2012 GMC Sierra 2500 HD 2007 GMC Sierra 2500 HD Classic 2005-2006 GMC Sierra 3500 2007-2012 GMC Sierra 3500 HD Replaces OE#: 12642623, 904517, 904-517, 12633244, 12639448, 12664429, 12639277, TP3018 Package Includes: 1x TP3018 Fuel Filter; 1x 12642623 Fuel Filter Head, 1x 12639277 Water In Fuel Indicator Sensor Important Installation Notes 1.Check Compatibility Before OrderingThis flter is designed for specific models. Please confirm the exact fitment using your vehicle's year, make, and model. 2. Pre-Fill with Clean Diesel Before Installation To prevent air lock and ensure proper priming, please pre-fill the fuel filter with clean diesel before installation. 3. Verify O-Ring Position During Installation Ensure all 0-rings are correctly seated. A misplaced or twisted O-ring may cause fuel leakage or priming failure 4. Tighten Drain Valve SecurelyIf equipped with a water drain valve, make sure it is properly tightened and seated to avoid leaks. 5.Inspect Primer Pump Function (lf Equipped) If your model uses a manual primer pump, ensure the pump builds pressure.lfno pressure is built, check the 0-ring and internal valveinte grity. 6. Do Not Over-Tighten the Housing Excessive torque may damage the sealing surface or warp the gasket, leading to fuel leakage Replacement For: 2005-2012 Chevy Silverado 2500 HD 2007 Chevy Silverado 2500 HD Classic 2005-2006 Chevy Silverado 3500 2007 Chevy Silverado 3500 Classic 2007-2012 Chevy Silverado 3500 HD 2005-2012 GMC Sierra 2500 HD 2007 GMC Sierra 2500 HD Classic 2005-2006 GMC Sierra 3500 2007-2012 GMC Sierra 3500 HD Replaces OE#: 12642623, 904517, 904-517, 12633244, 12639448, 12664429, 12639277, TP3018 Package Includes: 1x TP3018 Fuel Filter; 1x 12642623 Fuel Filter Head, 1x 12639277 Water In Fuel Indicator Sensor Important Installation Notes 1.Check Compatibility Before OrderingThis flter is designed for specific models. Please confirm the exact fitment using your vehicle's year, make, and model. 2. Pre-Fill with Clean Diesel Before Installation To prevent air lock and ensure proper priming, please pre-fill the fuel filter with clean diesel before installation. 3. Verify O-Ring Position During Installation Ensure all 0-rings are correctly seated. A misplaced or twisted O-ring may cause fuel leakage or priming failure 4. Tighten Drain Valve SecurelyIf equipped with a water drain valve, make sure it is properly tightened and seated to avoid leaks. 5.Inspect Primer Pump Function (lf Equipped) If your model uses a manual primer pump, ensure the pump builds pressure.lfno pressure is built, check the 0-ring and internal valveinte grity. 6. Do Not Over-Tighten the Housing Excessive torque may damage the sealing surface or warp the gasket, leading to fuel leakage 7. Install by a Qualified Technician For best results, we recommend professional installation, especially if unfamiliar with diesel fuel systems 8.Tips to Avoid Common lssues Always compare the product to the original part before installationLook for any signs of visible damage or missing parts before use.Save the orginal packaging in case a return or exchange is necessary. At ATRACYPART, we take pride in the quality of our products and in your satisfaction. If you have any problems, do not hesitate to contact us