Ford Performance - T2R Torsen Differential - 34 Spline 8.8 in.

Fits 2015-2018 Mustang GT, V6 and I4 with 3.31, 3.55 and 3.73 ratio gears only 
Standard on 2015+ Mustang GT Performance Pack 
Fits 34-spline axles 
Torsen(R) T2R type differential 
Features full-time torque-sensing,torque-biasing

Part #: M-4204-MT

Fits: 

Mustang GT - 2015-18

Mustang V6 = 2015-17

Mustang 2.3L Ecoboost = 2015-18