Ford Racing M-4209-88373A Ring & Pinion Installation Kit 3.73 Mustang Super 8.8"

Mustang IRS Super 8.8-Inch Ring And Pinion Set-3.73 Ratio 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. Incl. OEM Crush Sleeve and Pinion Nut Requires M-4210-B3 Install Kit OEM Quality Provides The Strongest/Quietest Gears On The Market Requires Aftmkt Calib. If Vehicle Not Equipped w/This Gear Ratio Made in the USA