The Harmonically Damped Pulley is ideal for engines that are running light weight flywheels, engines that are built – bored/stroked and engines that are driven hard.

• Offers improved HP & TQ by reducing drag from the power steering pump, A/C, water pump and alternator without detrimental effects on said ancillary systems.
• Dampens/reduces internal engine harmonics for improved engine performance, efficiency and longevity.
• Recommended for street or track use
• Lighter than original item

They will come standard in black anodising so will retain the original look.

These are a direct replacement for the standard item from Ford and are superior to a non damper pulley which can cause cracked oil pump gears and due to the extra vibration on a non damper pulley.