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Mustang 2015-2021 IRS Super 8.8" Ring and Pinion Set - 3.73 Ratio

SKU: M420988373A

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About This Item

About This Item

  • Fits 2015-2026 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