The XDP 6.0L Banjo Bolt Upgrade Kit XD271 helps remove restriction in the fuel system of your 2003-2007 Ford 6.0L Powerstroke. From the factory, the 6.0L Banjo Bolts have a check valve and a single small restrictive orifice which restricts fuel flow. XDP's Upgraded Banjo Bolts feature a free-flowing design with larger orifices for increased fuel flow. With a simple bolt-on installation, the 6.0L Banjo Bolt Upgrade Kit is the perfect addition to any 6.0L Powerstroke. Each kit comes ready to install and is backed by XDP's 1-year warranty.