ARP harmonic balancer bolt and washer kit for GM LS engines. Forged from 8740 alloy and heat-treated to 190,000 psi, with a tall 1-1/16″ 12-point head for deep-socket access and a thick wide-area washer. Holds the damper on LS cranks far more securely than the factory bolt.
- Application: GM LS Gen III/IV – 4.8 / 5.3 / 5.7 / 6.0 (LS1, LS6), wet-sump
- 8740 alloy, 190,000 psi, 12-point head
- Torque to 235 ft-lb
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