Description Water in Fuel (WIF) Sensor with Wrench for 2001-2011 GM Duramax (LB7, LLY, LBZ, LMM) *Wrench Included* Dorman # 904-110 904-111 Reference # 12639277 / 12639450 / 97384931 Dorman’s Water In Fuel Sensor is constructed from high-quality materials to withstand wear and tear due to repeated fuel filter service and other factors. It activates a warning signal that indicates elevated water levels in diesel fuel, enabling you to take measures to protect against fuel contamination, fuel system rust and corrosion, and engine trouble. Helps you take the necessary steps to avoid extensive damage to the fuel system. Direct replacement for a proper fit every time. On certain applications, turns off “water in fuel” or similar warning light. Rigorous quality control measures ensure conformance to product standards.
