BB Chevy square drive balancer bolt kit
- 1966-1995 Gen 4 and 5
- 1/2"-20 Thread
This is a special version of 's rugged 200,000 psi damper bolt that can accept a standard 1/2'' drive ratchet or breaker bar to facilitate rotating the crank assembly. Made by from heat-treated 8740 chrome moly with heavy-duty black oxide finish.