ATI Pontiac 6 3/8" 3-Bolt Damper/Balancer ATI-917161

Steel Shell/Steel Crankshaft Hub 6.325" OD Internal Balance 3-Ring .0135" thicker than stock *Pulley Mounting Surface is .200" further OUT than stock*(Uses Pulley #RAR-PUC-4AC for v-belt but will have to re-space brackets and accessories to account for the .200" difference in damper face

The patented ATI Super Damper is designed exclusively for high performance and all-out racing engines.

Eliminates torsional crankshaft vibrations
Exceeds SFI 18.1 specs
Laser engraved 360° timing marks
Black zinc chromate finished

Inner and outer shells contain the steel inertia weight. The inertia weight has six (2-ring design) or eight (3-ring design) computer machined grooves to retain the proper durometer O-rings (dyno tested for each application)