Roush
ROUSH 2011-2014 Ford Mustang GT 5.0L Phase 1-to-Phase 3 675HP Supercharger Upgrade Kit
SKU: R00I 421596
Description
Part #: 421596
The ROUSH Performance Phase 1 to Phase 3 Upgrade kit improves the power gains of your 5.0L Mustang Phase 1 ROUSH supercharger to 675 HP and 585 ft-lbs of concrete-smashing torque. That's an increase of 100 HP and 80 lb-ft of torque -- more power to dominate the streets!This upgrade kit offers better performance and added protection to meet the high demands of this much horsepower. To meet the increased fuel demands the ROUSH Fuel Pump Voltage Regulator and Plug-n-Play wiring harness offers are added to help regulate fuel pressure. The ROUSH Plug-n-Play wiring harness allows for easy installation or removal if the kit ever needs to be removed. No cutting or splicing of factory wiring and harnesses required.
Increase the horsepower and torque of your 2011-2014 ROUSHcharged Mustang with the Phase 3 Supercharger Upgrade kit.
Fitment
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Specifications
| Brand | Roush |
| Part Number | R00I 421596 |
Buy with Confidence
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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