ARP harmonic damper (balancer) bolt kit, kit number 234-2503, for Chevrolet LS Gen III and Gen IV engines except the LS7.
It replaces the factory GM balancer bolt 12557840 with a high-strength ARP 12-point bolt.
Brand: ARP
Kit number: 234-2503
Material: ARP 8740 chrome moly
Head: 12-point
Rated: 200,000 psi
Replaces: GM 12557840
Suits: LS Gen III/IV, except LS7
Listed torque: 235 ft-lb using ARP lube
Always follow ARP's instructions supplied with the kit.
Call us on (02) 5854 9001 for help. We ship Australia-wide from Dubbo NSW.