Roush Supercharger Upgrade Kit 727HP Phase 1 To Phase 2 5.0L 2015-2017

Roush: 421994
MSRP: $1,099.99
CJ's Low Price:
$1,049.99
1481328000 64177
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Roush Supercharger Upgrade Kit 727HP Phase 1 To Phase 2 5.0L 2015-2017
Roush Supercharger Upgrade Kit 727HP Phase 1 To Phase 2 5.0L 2015-2017 Roush Supercharger Upgrade Kit 727HP Phase 1 To Phase 2 5.0L 2015-2017 Roush Supercharger Upgrade Kit 727HP Phase 1 To Phase 2 5.0L 2015-2017 Roush Supercharger Upgrade Kit 727HP Phase 1 To Phase 2 5.0L 2015-2017 Roush Supercharger Upgrade Kit 727HP Phase 1 To Phase 2 5.0L 2015-2017
Roush

Product Description

Roush Phase 1 to Phase 2 727HP Supercharger Upgrade Kit for all 2015, 2016 and 2017 5.0L Mustangs with a Roush Supercharger.

Are you looking for a safe and reliable way to upgrade the already installed Phase 1 Supercharger found on your 2015-2017 5.0L Mustang? If so, the team over at Roush Performance has the perfect solution for you and it’s available right here at CJ Pony Parts!

The Roush Phase 1 to Phase 2 Supercharger Upgrade Kit (P/N: 421994) builds on the outstanding performance and reliability of the Roush Phase 1 Supercharger Kit. Roush does this by adding proven core components and a careful calibration for quick and easy solution to achieve an additional 57 horsepower and 65 lb-ft of torque over the Phase 1 system. The end result is an amazing 727 hp/610 lb-ft of torque while preserving the day-to-day confidence and driveability you expect from the team at Roush Performance.

Features and Benefits:
- 727 hp @ 6,850rpm and 610 lb-ft @ 5,100rpm
- Additional 57 Horsepower and 65 lb-ft of Torque Over Phase 1
- Safely and Reliably Increases Fuel Pump Output
- Does NOT Require Opening of the Fuel System
- Cooler Heat Range Spark Plugs Help Ensure Complete Combustion
- Prevents Detonation Under the Higher Boost Levels
- Smaller Diameter 80mm Pulley Increases Boost
- Does NOT Require a Belt Replacement
- Phase 2 calibration Delivered Through Roush Diagnostic Tool (RDT)

Included in Kit:
- Digital Fuel Pump Controller
- 80mm Supercharger Pulley
- (8) Motorcraft Spark Plugs
- Roush Diagnostic Tool (RDT) Re-Flash Voucher

Applications:
- 2015-2017 5.0L Mustangs with Roush Supercharger System (P/N: 421283) - Manual or Automatic
- 2015-2017 Roush RS3 Phase 1 Supercharged Mustangs

Please Note: This kit will physically fit any 2015-2017 5.0L Mustang, but RHD (Right-Hand Drive) vehicles but the included Roush Calibration will NOT work on any 2015-2017 5.0L Mustang outside of the US and Canada, so those vehicles will require custom tuning which is NOT Included). Custom tuning can be purchased through our program with Lund Racing and the nGauge Tuner, see P/N: NG4-V

Manufacturer Part Number: 421994

Roush engineers spend hundreds of hours in the laboratory, on the dyno and out in the field to ensure their components and calibrations deliver consistent performance in all conditions. And this upgrade kit is a perfect example of that research and development. Installing easily with a preset plug and play fuel pump controller, colder heat range spark plugs, and a higher boost 80 mm supercharger pulley. With the Phase 2 Calibration you will notice the increased horsepower and torque in your supercharged S550 in a matter of minutes.

Order the Roush Phase 1 to Phase 2 727HP Supercharger Upgrade Kit for your 2015-2017 5.0L Mustangs with a Roush Supercharger from CJ Pony Parts today!

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Mustang Applications

This product will fit the following Ford Mustang years:

Product Reviews

Write a review
Roush Supercharger Upgrade Kit 727HP Phase 1 To Phase 2 5.0L 2015-2017 is rated 5.0 out of 5 by 2.
Rated 5 out of 5 by from Extra top-end power I had this kit installed 3 months ago on my 2015 Roush Stg 3 and absolutely love it. The 670 horses the car originally came with is truthfully enough however, there is anoticeable increase in power between the 6500 - 7200 rpm band. I had my car dynoed recently and on the first pull the phase 1-2 kit measured 739HP @ 6850 rpms (at the crankshaft). As far as driveability and reliability, its been 3 months and 4200 miles since install and not a single problem has occured. If you have the Roush TVS 2300 S/C then I would reccomend upgrading to the phase 2 kit - $1000 bucks for an additional 50-60hp is worth it!
Date published: 2016-08-05
Rated 5 out of 5 by from misfire after installing the kit I got random misfire and the engine light came on with the code P0300, I have check every thing, everything was in place, any idea?
Date published: 2016-12-08
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Product Questions

Is there a plan for Bill to do an install video on the Phase II upgrade package?

Asked by: roryc3
Not at this time, but we do have detailed installation instructions available, here: http://assets.cjponyparts.com/skin/frontend/cj-pony/default/images/install-pdf/install_421994.pdf
Answered by: CJPP Dave
Date published: 2016-06-01

Do you make a 2015 phase 3 Roush?

Asked by: Mike 5284321
A Phase 3 Kit is NOT available at this time.
Answered by: CJPP Dave
Date published: 2016-06-01
  • 2016-12-10T08:06CST
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