Oldsmobile 455 6.500" External SFI-Rated Damper Harmonic Balancer Made from 5051 aircraft aluminum

Made from 5051 aircraft aluminum alloy

They feature cast iron construction and are powdercoated to protect against corrosion

There's no better way to top off your street machine than with one of our PCEHilborn-Style hood scoops

They provide higher power and torque transmission

best of all

Oldsmobile 455 6.500" External SFI-Rated Damper Harmonic Balancer Made from 5051 aircraft aluminumSpeedmaster harmonic balancers are crafted from high quality steel and feature a tuned elastomer for optimal engine performance. They include a strong bonding process, easy to read timing marks, and an advanced design to absorb engine vibrations, extending the life of the crankshaft and bearings for enhanced power and torque.