The differentials in the Hyundai Genesis Coupes had slight differences between models. The R-Spec and the Track model both came equipped with a factory LSD. Besides the different ring & pinion gears and the open or lsd internals the differential housings are all the same. This helps with enthusiasts desire to modify.
Differential Fluid: Synthetic GL-5 SAE 75W-90. About 1.4 Liters.
Differential Final Drive gear ratio:
Theta 2.0 Manual transmission: 3.909:1
Theta 2.0 Automatic transmission: 3.909:1
Lambda 3.8 Manual transmission: 3.538
Lambda 3.8 Automatic transmission: 3.727:1
Theta 2.0 Manual transmission: 3.727:1
Theta 2.0 Automatic transmission: 4.181:1
Lambda 3.8 Manual transmission: 3.727:1
Lambda 3.8 Automatic transmission: 4.181:1
*Please check the white tag on the cover of your differential to confirm.
There are four bolts that hold the differential to the subframe, and 3 that hold the driveshaft on. Depending on your model the differential outputs could either be spline type or bolt on.
The torque spec for the four differential bolts on the Hyundai Genesis Coupe differentials are 72.3 lb-ft.
Pinion locking nut torque for the Hyundai Genesis Coupe is: 119.3 lb-ft.
Differential cover bolts torque for the Hyundai Genesis Coupe is: 39.1 lb-ft.