Fuel Filter Head with Hand Fuel Pump Housing and Heater Plug and Air Bleeder Screw Fits Chevy Silverado/GMC Sierra 2500 3500 HD V8 6.6L 2005-2013. The black base is made of aluminum billet, which is protected from oxidation and corrosion by electrophoresis process and is easy to clean.Also includes a heater plug.The aluminum air bleeder screw which replaced plastic OEM screw was more durable. Direct replacement for a proper fit and easy installation, quality materials used, meets or exceeds OEM standards, 100% tested before shipping. Even though it is not a genuine GM or ACDelco Fuel Filter Head, but it works even better and last longer. Replace part: 12642623, 12639448, 904-517, 904517 For these filters: TP3018, TP3012, TP1298, TP1298A, TP1298B, 12633243, 12646512, 89016324, 89060534, 97385488, 98017645, 98081884. 12-Month Warranty: If you have any questions, please contact us and we will reply to you within 24 hours.