2V, 3V, 4V  Mustang GT & Cobra  with 8 Rib 15% Overdrive Drive Pulley Harmonic Damper

7.5" Mod Motor Harmonic Damper
8 Rib 15% Overdrive

Part# 814
Only $440.00
SFI 18.1 Harmonic Damper for 2V, 3V, 4V Mustang GT & Cobra with 8 Rib Overdrive Pulley. The "Mod Motor" balancers are designed to fit 4.6L 2V, 3V and 4V engines as well as 5.4L 2V engines.


  • Dual Keyway Option - Add $20.00
    Add dual keyways for Supercharged or Extreme Duty Applications. Requires double keyed crankshaft snout.
  • Super Duty Hub Option - Add $15.00
    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.


  • Diameter: 7.5"
  • Weight: 8.0 lbs
  • Exceeds SFI 18.1 standards and is marked on front with SFI Sticker, and on the rear with SFI number stamped into unit.