Torque Solution billet rear differential insert for Audi S4 (2010–2017) and Audi S5 (2008–2017) applications. Designed to fit the rear differential location on the listed models, the billet insert is offered as a direct-fit component intended to replace or supplement the factory differential mount insert for those specific years and chassis.
Torque Solution 10-17 Audi S4 / 08-17 Audi S5 Billet Rear Differential Insert