The Torque Solution billet lower differential mount insert for 2016–2024 Audi A4 and S4 (B9/B9.5) is a direct-fit component that installs into the factory lower mount to stiffen the differential connection. By reducing unwanted movement it helps maintain drivetrain alignment under load and supports a more consistent driving feel. The insert provides a simple upgrade without extensive modifications.
Torque Solution 16-24 Audi A4/S4 (B9/B9.5) Billet Lower Differential Mount Insert