Ford Racing ring and pinion sets are engineered, manufactured, and tested for maximum performance. These ring and pinion sets are finished in a black oxide coating for corrosion resistance, and are available in many different ratios to fit a variety of Ford differentials. ** Note: 3.15 Ratio Differential not compatible with 3/31, 3.55, 3.73 and 4.09 ratio gears. Use differential M-4204-MT or M-4204-M. * This part is designed and intended for competition use only. It should not be installed on a vehicle that is driven on public roads and highways. Installation of this art on a vehicle driven on public roads and highways is likely to violate U.S. and Canadian laws and regulations relating to motor vehicle emissions.

Fitment:
Ford Mustang EcoBoost 2015
Ford Mustang EcoBoost 2016
Ford Mustang EcoBoost 2017
Ford Mustang EcoBoost 2018
Ford Mustang EcoBoost Premium 2015
Ford Mustang EcoBoost Premium 2016
Ford Mustang EcoBoost Premium 2017
Ford Mustang EcoBoost Premium 2018
Ford Mustang GT 2015
Ford Mustang GT 2016
Ford Mustang GT 2017
Ford Mustang GT 2018
Ford Mustang GT 50 Years Limited Edition 2015
Ford Mustang GT Premium 2015
Ford Mustang GT Premium 2016
Ford Mustang GT Premium 2017
Ford Mustang GT Premium 2018
Ford Mustang Shelby GT350 2015
Ford Mustang Shelby GT350 2016
Ford Mustang Shelby GT350 2017
Ford Mustang Shelby GT350 2018
Ford Mustang Shelby GT350R 2015
Ford Mustang Shelby GT350R 2016
Ford Mustang Shelby GT350R 2017
Ford Mustang Shelby GT350R 2018
Ford Mustang V6 2015
Ford Mustang V6 2016
Ford Mustang V6 2017