2003-2007 Powerstroke 6.0L Warren Stock Injector Set of 82003 2007 Powerstroke 6. 0L Stock Injector Set (wdi stock) Warren remanufactures all internal mating surfaces, inspect all pieces of the injector, replace defective parts, and test each solenoid. Every O ring in and on the injector is replaced. Every injector they remanufacture is flow tested on their in house flow bench. Each injector has 4 tests that it has to pass before being shipped out to you.