Fits 2015-2019 Mustang Super 8.8-inch IRS center section 

• Includes OEM crush sleeve and pinion nut  

• Requires M-4210-B3 Mustang 8.8-inch ring-gear and pinion install kit  
  

• Made in United States in Ford's Sterling Axle Plant 
  

• OEM Quality - our superior surface finish, hardening and manufacturing consistency provide the strongest and quietest gears in the market.

• Requires aftermarket calibration if vehicle is not originally equipped with this gear ratio

• 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