ATI PERFORMANCE #917236 SBC 6-3/8 Harmonic Damper - SFI
SBC 6-3/8'' ALUMINUM HARMONIC DAMPER - SFI
USE WITH JESEL BELT DRIVE
Aluminum hubs for these assemblies have a 2.250 seal diameter with a .500 wall thickness and fits inside the Jessel lower pulley. This eliminates hub failure at the keyway on engines driving dry sump pumps and pulleys.
Super Damper Harmonic Dampers
The patented ATI Super Damper is the only crankshaft damper designed exclusively for high performance Chevy engines.
Eliminates torsional crankshaft vibrations
Exceeds SFI 18.1 specs
Black zinc chromate finished
OEM equipment on ZZ572 GM Crate Engines
Tunable, rebuildable, and extremely efficient at ALL RPM
Laser engraved 360 timing marks
Inner and outer shells are available in aluminum or steel, and contain a steel inertia weight. This 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).
|Truck Freight Only||NO|
|Warnings||These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm|