The balancer bolt is the only thing holding the balancer, and the front of the crank, together. A rounded-off head or a bolt that stretches turns into a walked balancer and a wiped snout. This one is machined and thread rolled after heat treating, and the extra-tall 12-point head gives a deep socket real purchase for installation and removal.

Moroso 38775 Ultimate Duty Balancer Bolt Kit Features:

• Fits big block Chevy cranks with 1/2 in.-20 threads.
• Chrome moly steel with a large built-in washer flange.
• Machined and thread rolled after heat treating for strength and accuracy.
• Extra-tall 12-point head accepts a deep 5/8 in. socket without stripping.
• 2 in. diameter washer machined flat to spread the load.
• Black oxide finish.