FAI Automotive Viscous M57 Harmonic Balancer
At long last, a cost effective solution to the failing oem M57 harmonic balancer! WPI has secured the sole USA distributorship with FAI to bring these over!
This is a hybrid design damper that uses both rubber and viscous elements. This negates the absolute necessity for a clutched alternator pulley to eliminate belt squeak at idle with a viscous only damper. However, a clutched alternator pulley is still a fantastic upgrade with it's own benefits and should be strongly considered. Made in Turkey by FAI Automotive, the damper carries a manufacturer 3 year unlimited mileage warranty standard. However, if you have a failure outside of the 3 year warranty, WPI will replace it at no cost and no questions asked.
-Damper only with 4 mounting bolts
-Damper, 4 bolts, INA clutched alternator pulley, and alternator pulley spacer
Viscous Dampers Design
A viscous damper has a sealed outer housing with a precision machined hub. Inside of the housing is an inertia ring with a viscous fluid (specialized silicone) filling the cavity.
|1. Groove||8. Inner Hub|
|2. PTFE Bushing||9. Inertia mass housing|
|3. Plastic Bushing Plate||10. Slide Bearing|
|4. Rubber||11. Inertia mass|
|5. Slide Bearing||12. Cover|
|6. Main Hub||13. Viscous Fluid hole|
|7. Propeller||14. Viscous fluid gap|
Included 12.9 sockethead capscrews torque to 60lb/ft without thread lubricant. They generate a higher clamp load than oem stretch bolts and are reusable.