PRW 1042289 Harmonic Balancer, Ford 289-460 (Except 351C),

Crankshafts Flex And Your Damper Absorbs Incredible Amounts Of Energy. PRW Harmonic Damper Bolts Will Ensure That Your Balancer Is Locked Into Position. These Feature A 1/4" Thick Wide-Area Washer And An Extra Tall 12-Point Head That Accepts A Deep Socket To Eliminate The Fear Of Stripping The Head When Torqued To Specification.