Automotive Racing Products (ARP) Harmonic Balancer Bolt 234-2503; 12-Point M16 x 2.00 4.325 in. Black Oxide 8740 Chromoly for Chevy LS-Series - except LS7

Fits GM Gen III LS Series small block V8s (Except LS7) ARP's 234-2503 harmonic balancer bolts resist the flexing and twisting of the balancer as it absorbs large amounts of kinetic energy. ARP has developed these bolts to ensure that the balancer remains locked in position. They yare rated at 200,000 psi tensile strength so you can exert the maximum clamping force. The special features of ARP's 234-2503 include a quarter inch thick, wide area washer and an extra tall 12-point head that will accept a deep socket with no worries about stripping the head.