Car Electric Power Steering Rack Bearing Steering Gear Bearing For A4 A6 A7 A8 Q5 Q7 C7 2012-2018 It supports the steering gear mechanism, helping to smooth and precise steering.The bearing fits applications in models including A4, A6, A7, A8, Q5, and Q7, manufactured between 2012 and 2018.It is engineered to match the specifications for performance and. This product is an aftermarket alternative.Brand names mentioned serve only to show which devices it fits.