Description

This ARP 129-2503 Chevy Harmonic Balancer Bolt Kit is for Chevy 6.6L Duramax engines. Contains only the bolt. Made from Black-Oxide coated Chromoly Steel and nominally rated at 190,000 PSI. Precision machined for optimum thread engagement. This bolt is 2.750″ long, has a M18 x 1.50 thread, and has a 36mm 12 Point head.

ARP 129-2503 Chevy Harmonic Balancer Bolt Kit Fits:

• Chevy 6.6L Duramax Engines

As the crankshaft flexes and twists, the harmonic damper absorbs incredible amounts of kinetic energy. To ensure that the damper is locked in position, ARP has developed these ultra strong 190,000 psi bolts that let you exert maximum clamping force. Special features include 1/4 thick, wide area washer and an extra tall 12-point head that accepts a deep socket. This helps eliminate the worry of stripping the head.