The ECS Tuning dogbone mount insert for the A3 platform works with the original OEM rubber mount bushing to stiffen the connection between the transmission mount and subframe. Less drivetrain movement means smoother shifts, especially under heavy acceleration. Insert is made of 88A torque durometer polyurethane; kit includes insert retaining washer centering washer and stretch bolt. * This part is designed for the FSI engine only. This can easily be found on the engine cover of your 2.0T VW/Audi. It will clearly be stamped FSI (not TFSI).