Roush Performance 421390 11-14 Ford Mustang V8 5.0L Supercharger 625HP Phase 2 Calibrated Supercharger Kit

If you are looking for a way to boost your Mustang’s performance and horsepower, you might want to consider the Roush Performance 421390 11-14 Ford Mustang V8 5.0L Supercharger 625HP Phase 2 Calibrated Supercharger Kit. This kit is designed to deliver a powerful and smooth supercharged engine that will make your Mustang stand out from the crowd.

Product Description

The Roush Performance 421390 kit is a roots-type axial flow supercharger assembly that features twin four-lobe rotors that are twisted 160-degrees for increased thermal efficiency and volumetric capacity. The kit also includes an air to water intercooler with auxiliary low temperature radiator, an intake manifold, a reflashed ECM without user adjustments, a dual 60 mm throttle body, high flow fuel injectors and rails, a new air box with stock hydrocarbon paper heat staked in a stock location and orientation, a conical air filter element, a fuel pump voltage booster, and a recalibrated stock MAF sensor.

The kit produces 625 horsepower and 525 lb-ft of torque (205-213 hp gain and 135 lb-ft gain over stock) for the 2011-2014 Ford Mustang 5.0L V8 engine. The kit also improves the engine’s responsiveness, throttle response, and fuel economy.

Key Features

• Roots-type axial flow supercharger assembly with twin four-lobe rotors
• Air to water intercooler with auxiliary low temperature radiator
• Intake manifold
• Reflashed ECM without user adjustments
• Dual 60 mm throttle body
• High flow fuel injectors and rails
• New air box with stock hydrocarbon paper heat staked in a stock location and orientation
• Conical air filter element
• Fuel pump voltage booster
• Recalibrated stock MAF sensor

Benefits

By installing this kit on your Mustang, you can enjoy the following benefits:

• Increased power and torque output for better acceleration and performance
• Improved engine sound and feel for more excitement and fun
• Enhanced throttle response and drivability for smoother shifting and cornering
• Improved fuel economy for lower emissions and operating costs

Product Specs

Size: R2300
Color: Black Powdercoated
Material: Aluminum
Other Features: Intercooler system featuring large full face low-temp radiator, oversized coolant degas bottle, high capacity air-to-water intercooler, formed hoses with abrasion-resistant sleeves; Twin pulley system; High efficiency intercooler system; High flow fuel rail; Bolt on pulley

Install Difficulty Level

Installing this kit is not very difficult if you have some basic mechanical skills and tools. However, it is recommended that you consult the installation manual before attempting any modifications to your vehicle. The installation manual provides detailed instructions on how to install each component of the kit, as well as safety precautions and troubleshooting tips.

Vehicle Fitment

This kit is compatible with the following vehicles:

Vehicle Year Range: 2011 to 2014
Make: Ford
Model: Mustang

This kit does not fit other models or years of Mustangs.

Carb Approval Status

This product is not currently CARB exempt and is not available for purchase in California or for use on any vehicle registered with the California Department of Motor Vehicles

Warranty Information

This kit comes with a limited lifetime warranty from Roush Performance Products. The warranty covers any defects in materials or workmanship under normal use during the vehicle’s original warranty period. The warranty does not cover any damage caused by misuse, abuse, neglect, accidents, modifications, or unauthorized repairs. 

If you have any questions about this product or to report product description inaccuracies, contact the MPT Performance experts at (407) 636-7077 or by email.