High Performance : 1. GM245 Fuel Injector Seals Tool comparable to EN-49245, EN-51105 and 18683AA000, used for replacing the fuel injector teflon seals without damage or leakage. 2. 6706 Injector Rail Assembly Remover Tool replaces for EN-49248, used to evenly loosen the seat rings of all injectors and properly remove the direct injection fuel rail without damaging the injectors, cylinder head and rail mount assemblies.