Roush M90 Supercharger Pulley & 90MM Idler Package 2.49" Diameter

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2.49" Diameter
Keyway Design
Fits 2005-(early)2008 Mustang 4.6L 3V with Roush Supercharger

2.49" keyed design! Approximately 1/2 to 3/4 lb more boost than other pulleys.
Features:
This is the old style pulley with a keyway and held on by a bolt.
Includes larger 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.
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 so it will not rust. Will not come off like some aluminum pulleys.

Part TypeSupercharger Pulley

BrandVMP PERFORMANCE

Package Height3.4

Package Width4.4

Package Length6.9

Weight1.71 PG

Part CategoryPerformance Parts

Package Qty1

Package TypeEA

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Roush M90 Supercharger Pulley & 90MM Idler Package 2.49" Diameter

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