The Fass TSC11165G 165gph Fuel Lift Pump System is the perfect way to upgrade your fuel system and increase efficiency, performance, and smoother idle. With a 3 micron filtration rating, this lift pump system will extend the life of your fuel injectors and protect your fuel system. The optional electric heater and fuel pressure gauge port make this system even more versatile and convenient. With a 30K mile filter life expectancy, the Fass TSC11165G 165gph Fuel Lift Pump System is a great investment for any Duramax owner.