Features: The PowerFlo In-Tank Lift Pump retains your factory fuel lines and installs in less than half the time of other high flow pumps. New sender electronics and fuel level float will get your fuel gauge working properly again! The Active Fill Bucket eliminates the need for in-tank pans, air intake straws, additional air filtration, and tank issues that typically come with finding a higher flow pump to meet your engine needs. Want the benefits of an in-tank pump but need to run your own fuel lines or aftermarket filters The pump outlet and return connections are threaded to accept a -8 O-ring fitting (3/4″-16 thread). Included: Fleece Performance PowerFlo In-Tank Lift Pump Installs: 2001 – 2004 GM Silverado/Sierra 2500/3500 6.6L LB7 Duramax