Air and Fuel› Superchargers, Turbochargers and Components

Roush

ROUSH 2011-2014 Ford Mustang GT 5.0L Phase 2 625HP Supercharger Upgrade Kit

$884.27

SKU: R00I 421389

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INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Part #: 421389

The ROUSH Mustang Phase 2 - 625 HP Supercharger Upgrade Kit includes all of the necessary components to increase your ROUSH Supercharged Mustang to 625 HP and 525 lb-ft. It comes with a new 85mm S/C Pulley, Shorter FEAD Belt, Cold Air Induction System, ROUSH Flash Voucher card and Installation Instructions.Hundreds of hours of research and testing go into the development of the ROUSH superchargers including testing in extreme environmental temperatures from -20 degrees up to and through 120 degrees Fahrenheit and at higher altitudes of 14,000 ft for quality and performance. Over 40 emissions tests to ensure that the Mustang still makes the same emissions and that all the Ford engine diagnostics functions as intended but this kit is currently not CARB approved. Engine dynamometer development allows for the re-map camshaft positions and many other aspects of the calibration.

Ford Mustang Supercharger - ROUSH Phase 2 625 HP Upgrade Kit (2011-2014)

MIA's Description

The Roush 421389 is an R2300 to Phase 2 Supercharger Upgrade Kit for Roush TVS Supercharger Kits (525hp, 540hp, or 575hp). This upgrade increases output to 625 hp and 525 lb-ft torque and includes a cold air intake, an 85mm pulley, a 6-rib serpentine FEAD belt, and a Roush PCM flash voucher card.

Fitment

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Specifications

BrandRoush
Part NumberR00I 421389

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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