2V, 3V, 4V  Mustang GT & Cobra  with 8 Rib drive & 10% Underdrive Pulley Harmonic Balancer

5.875" Mod Motor Harmonic Balancer
6 Rib, 10% Underdrive

Part# 810
Only $440.00
SFI 18.1 Harmonic Balancer for 2V, 3V, 4V Mustang GT & Cobra with 6 Rib, 10% Underdrive Pulley. The "Mod Motor" balancers are designed to fit 4.6L 2V, 3V and 4V engines as well as 5.4L 2V engines.

For engines making over 500 hp a standard diameter damper is recommended.


  • Diameter: 5.875"
  • Weight: 5.0 lbs
  • Exceeds SFI 18.1 standards and is marked on front with SFI Sticker, and on the rear with SFI number stamped into unit.
  • Underdrive Balancers are designed for use on N/A engines producing less than 500 hp.  For forced induction applications or engines making more than 500 hp we reccomend the standard diameter or larger Balancers.