A great value to install a 3.73 gearset in your 2015-17 Mustang. Includes 3.73:1 gearset M-4209-88373A and complete install kit with bearings M-4210-B3
Note: 3.15 ratio differential not compatible with 3.31, 3.55 and 3.73 ratio gears. Use differential M-4204-MT or M-4204-M
Requires aftermarket calibration if vehicle is not originally equipped with this gear ratio
Fluid is not included
