Roush 421994 Mustang Phase 2 supercharger upgrade kit product view
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Roush 2015-2017 Ford Mustang Phase 1-to-Phase 2 727HP Supercharger Upgrade Kit

Roush
RSH421994
844764006133
Forced Induction Components
3 Units In Stock
$ 999.99
$ 999.99

Shop the Roush 2015-2017 Ford Mustang Phase 1-to-Phase 2 727HP Supercharger Upgrade Kit, a genuine Roush component identified by manufacturer part number 421994. Review the verified vehicle fitment, specifications, included components, and installation requirements below before ordering.

Key Features

  • The result is an outstanding 727 hp / 610 lb-ft of torque while retaining the daily confidence you expect from the engineering of ROUSH Performance.
  • The upgrade installs easily with a preset plug and play fuel pump controller, colder heat range spark plugs, and a higher boost 80 mm supercharger pulley.

Fitment

Years Make Model Submodel
2015-2017 Ford Mustang

Specifications

Brand Roush
Manufacturer Part Number 421994
Product Type Forced Induction Components
Condition New
Manufacturer Listing 2015-2017 Roush Mustang Phase 1 to Phase 2 Supercharger Upgrade Kit - 727 HP
Manufacturer Reference Price $999.99

What's Included

The exact Roush component or kit identified by manufacturer part number 421994. Included hardware and supporting components are limited to what Roush supplies for this part number.

Brand Information

Roush Performance develops engineered performance, handling, exhaust, induction, forced-induction, and appearance products for Ford vehicles. Application and configuration must be verified by the complete Roush part number.

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Frequently Asked Questions

Will Roush 421994 fit my vehicle?
Match the complete year, make, model, and submodel shown in the fitment table, then verify the engine, trim, factory equipment, emissions requirements, and all application notes.

Does this include everything required for installation?
Included components vary by exact part number. Review the Roush instructions and product details, then confirm whether calibration, specialty tools, reused factory hardware, or supporting parts are required.

Is professional installation recommended?
Professional installation is recommended for exhaust, suspension, supercharger, intake, and body components when the work requires lifting, alignment, calibration, wiring, tuning, or safety-system checks.

Installation Instructions

Follow the current Roush instructions for this exact part number. Confirm vehicle configuration, safely support the vehicle where required, protect wiring and nearby components, use specified fastener torque, complete any required alignment or calibration, and inspect operation before normal driving.

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Military & First Responder Discounts

Military & First Responder Discount Program

Black Ops Auto Works proudly honors active duty military, veterans, National Guard, reserves, police officers, firefighters, and EMTs with an exclusive 5% discount on all performance parts and carbon fiber upgrades. Verify instantly and start saving today.

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