Earls Harmonic Balancer Bolt – GM LS Series – 12-Point

Harmonic Balancer Bolt w/ Thick Washer, GM LS1/LS6 4.8L-7.0L, 12-Point , 27mm Wrenching, 180,000 PSI, M16 x 2.0 x 4.330″ Under Head Length. Fits all versions of the GM LS engine – except the LS7/LS9/LSA.