A great upgrade to the factory stamped steel idler pulleys, the VMP 100 mm idler pulley uses an oversized NSK heavy-duty bearing.

• Billet aluminum with black hardcoat annodize
• Fits 6, 8, and 10-rib belts
• Heavy duty NSK 6303 bearing
• Factory bolt is reused
• No offset
• Fits common applications that require an idler with 17 mm bore
• Fits 2011-2017 Mustang 5.0 L with TVS blower
• Fits 2003-2004 Cobra (see below)
• Fits 1999-2004 Lightning (see below)
• DOES NOT fit 2007-2014 GT500

The VMP 100 mm idler pulley is designed to reduce belt slack and increase supercharger pulley belt wrap when utilizing a smaller supercharger pulley.

• 2003-2004 Cobra: the use of two of these idlers allows for the use of the stock belt with a 2.6" to 3.0" upper.
• 1999-2004 Lightning: fits various locations on the belt system
• 2011-2017 Roush Supercharged Mustangs: a small amount of grinding is required on the FEAD bracket.

Includes: (1) idler pulley