MUSTANG IRS SUPER 8.8" RING AND PINION SET - 3.73 RATIO

Rev up your Mustang's performance with the RING AND PINION SUPER 8.8" 3.73 IRS set, expertly crafted at Ford's Sterling Axle Plant for unmatched strength and quiet operation. Enjoy OEM-quality gears that deliver exceptional reliability and an exhilarating driving experience.

  • 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 

Part Type
Driveline: Ring & Pinion
Warranty Availability
Package Dimensions
11.5" x 5.5" x 15"
Package Weight
19.55 lb(s)
UPC Code
756122000571
Country of Origin
United States