Diesels make big twist "NOW". -torque in the instant. This imposes significant loads and this kit is easy insurance against failure.
Secure your AAZ, 1Z, or AHU turbodiesel's crank timing gear with dowel pins! -no more sheared keyways and banged up valvetrain. These engines weren't built to rev, but that's NOT going to stop YOU, is it?
Our solution includes a new crank timing gear with pre-drilled pilot holes, a new drill bit, reamer, and pair of hardened steel precision-machined dowel pins (.188" diameter).
