SFI 18.1 Harmonic Damper for LS1, LS2, LS3, LS6 Corvette, Pontiac G8 & Cadillac CTS-V w/Crank Bolt. Features 77-Tooth Cog Drive.
This damper comes standard with 3/16" Keyway for use with aftermarket crankshafts
Dual Keyway Option - Add $20.00
Add dual keyways for Supercharged or Extreme Duty Applications. Requires double keyed crankshaft snout.
The super duty hub has increased material for supercharged applications.This increased material helps to protect the hub from cracking in high load applications. The super duty hub is recommended for supercharged applications making over 750 rwhp. Includes matching timing cover oil seal.