03-07 Cummins 5.9 Industrial Injection High Pressure Fuel Rail Plug

Industrial Injection fuel rail plug  For 2003-2007.5 5.9L Cummins.

These plugs are very important to have installed if you are running a tuner that is turning up your rail pressure. Because many times with tuning that goes over factory spec you can cause the factory rail pressure relief valve to blow which can crack injector nozzles and bodies.