As the crankshaft in your Cummins 5.9L flexes and twists, the harmonic balancer is absorbing incredible amounts of kinetic energy. The Damper Bolts ensures that the crankshaft balancer is locked in position. This Pro Series Harmonic Damper Balancer Bolt Kit from ARP has the ultra high strength 200,000 psi crankshaft harmonic balancer bolts. By using the Balancer Bolt Kit, you exert the maximum clamping force between the crankshaft damper and the crankshaft.
ARP Cummins 5.9L 12/24V Diesel Harmonic Damper Bolt Kit Installation Instructions