Now, replacement of 94-98 Dodge 12-valve diesel injectors is fast and easy! Just assemble the injector puller onto the injector, place the tube over the injector body, followed by the hardened washer and nut. Then tighten the nut and even the most stubborn injector will pop right out. This heavy duty injector tool is made from heavy wall tube, a special hardened washer to fit the injector, and a hardened nut. We could have used cheap unhardened nuts, but chose the higher priced items because diesel owners demand the best. This tool will last a lifetime. All parts are plated and feature a second process to keep the tool rust free.