(Work on 3126B Cat HUEI injectors 10R-0781, Caterpillar Marine Model 3126 / 3216B, Cat C7 C9. （NOTE: will not work on a cat 3126 engine 12 valve head.). High speed steel tap used in the removal tool is the highest quality available, resisting rust and corrosion, ensure an unparalleled long lifespan.
