This lift pump is a game - changer for your 2015 - 2016 GM/Chevrolet LML 6.6L Duramax engine. Factory - installed Duramax engines lack a lift pump, forcing the CP4 injection pump to pull fuel under vacuum, causing unnecessary wear. Our FASS lift pump solves this issue, efficiently fueling your engine up to 600HP. It comes with a Titanium Signature Series System offering advanced 2 - micron filtration, water separation, and air/vapor removal, protecting your injection system and extending injector life. With less than a 2% motor failure rate, it's a reliable choice. Key features include Whisper Technology for quiet operation, complete replacement design, removal of water/air/debris, improved cold - weather starts, ½ - inch fuel lines, better fuel mileage, smoother idle, a limited lifetime warranty, and a 1,000,000 - mile motor with a 30,000 - mile filter life. The new bolt - on brackets simplify installation, and Performance Radius Cuts improve fuel flow. Part Number: TSC12100G, Superseded Part Number: TS C12 100G.

Using your FASS lift pump is straightforward. First, ensure the engine is off. Locate a suitable spot to install the pump using the new bolt - on brackets. Connect the ½ - inch fuel lines to the appropriate ports. Start the engine and let it run to check for any leaks. During normal use, the pump will automatically fuel your engine up to 600HP. Remember, the filter has a life expectancy of 30,000 miles. Replace it regularly to maintain optimal performance. In cold weather, the pump helps with better starts. Keep an eye on the fuel pressure, which is preset at 8 - 10PSI. If you notice any unusual noises or a drop in performance, check the pump and fuel lines for blockages or damage. With a limited lifetime warranty, you can rely on this pump for long - term use. Enjoy the improved fuel efficiency, smoother idle, and enhanced engine performance it brings.