Buy OEM Audi Part # 4B3407253G (4B3-407-253-G, 4B3407253D, 4B3407257G). Steering Knuckle. 2.7 & 3.0 liter. 4.0 liter. 4.2 liter. A6/S6; Left; 2.7L, 3.0L. A6/S6; Left; 4.2L. Passat; Left; w/4.0L. S4; Left

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

Steering Knuckle

Fits A6, S4, S6

2.7 & 3.0 liter. 4.0 liter. 4.2 liter. A6/S6; Left; 2.7L, 3.0L. A6/S6; Left; 4.2L. Passat; Left; w/4.0L. S4; Left.
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.