VMP exclusive 2.49" design!
This pulley and idler fits 2008-2010 Mustangs with the Roush M90 supercharger kit and the 4.6 L 3V engine. In mid 2008 Roush switched from a bolt-on keyed style pulley to a press-on style pulley, make sure your car has this type of pulley.
This package includes the larger VMP 90MM replacement idler to improve belt wrap and take up slack, allowing for use of stock belt.
For late 2008/2009 Roush changed the type of pulley on their Stage 3 cars and M90 Roushcharger blowers, VMP now offers a pulley that fits! The old pulley was a keyed type held on by a bolt, these blowers can be identified by their straight ribs on the top. Thew new blowers use a press fit pulley with no bolt and a plastic plug in the front, these blowers have curved fins on top. The new style pulley requires a special tool to remove and install the pulley.
Adds even more boost than the aftermarket pulleys from Roush Performance.
Tuning recommended when swapping from a stock pulley. Most tunes will adjust if swapping from a 2.55 or 2.57 pulley.
One piece steel design powdercoated black.
Tuning also available.
We recommend the VMP pulley installation and removal tool (VMP-SUA031) to swap this pulley without damaging your supercharger.
