This kit will fix most pre-pump issues on these trucks. If you have purchased or are going to purchase Marty's e-fuel systems, you should include this kit. This kit replaces both line sets between the sending unit and the selector valve. It also comes with new quick disconnect fittings that click on to the selector valve and sending units. It addresses the size differences and the angles needed to properly fit these lines. It also includes the OEM 100 micron in tank umbrellas/screens as well as the pinch pliers needed to make the lines the EXACT length needed.