Review on Enhance Engine Performance with CTA Tools 2237 Toyota/Lexus Harmonic Dampening Tool by Mark Harris

This worked to tighten the crank bolt on a 4.7 Tundra. I used an impact wrench to loosen the screw, but it might come in handy for that as well. You just need a good strong pipe long enough to reach the frame. A note: A washer and nut must be used as a spacer between this tool and the crank pulley, otherwise the depth will be wrong.