During engine re-assembly, or while performing a major tune-up and valve adjustment, precise positioning of your eninge is critical. This tool bolts to the puller holes on your engine's harmonic balancer and allows you to rotate the engine using your 1/2in. breaker bar or ratchet. The tool's outside diameter is 4 3/8in. and 6 oblong slots allow it to be used on almost any engine. Also comes with three 3/8in. x 24 grade 8 bolts for use on most domestic vibration dampers.
