- Fits 2015-2026 Mustang Super 8.8-inch IRS center section
- As used in Mach 1 Manual HP USA spec
- 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
