ARP 156-2501 Harmonic Balancer Bolts 12mm x 1.50 Thread Size 1.880 UHL 12-Point
This ARP 156-2501 Ford Harmonic Balancer Bolt Kit is for 4.6L and 5.4L Modular engines. Made from Black-Oxide coated Chromoly Steel and nominally rated at 190,000 PSI. Precision machined for optimum thread engagement. This bolt is 1.800" long, has a 12mm x 1.50 thread, and has a 18mm 12 Point head.
ARP 156-2501 Ford Harmonic Balancer Bolt Kit Fits:
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.