Buy OEM Audi Part # 8V0407254A (8V0-407-254-A). Steering Knuckle. RS3; Right. Steering Knuckle - Repair or Replace The steering knuckle in your Audi may need to be

Housing. Steering knuckle.
A knuckle used on a Steering axle that has no additional components attached.

Steering Knuckle

Fits RS3

RS3; Right.
Steering Knuckle - Repair or Replace
The steering knuckle in your Audi may need to be replaced if it has become damaged or rusty, which will usually be determined during a related repair.