Shop OEM Volkswagen Group Part # 4G0407253A (4G0-407-253-A). Steering Knuckle. 2013-2016, KSM. A5, S5; Left; KSM. CONVERTIBLE, KSM. Coupe, from 11/2009, KSM. From 11/01/2009, KSM. From 11/2009, KSM

Housing. Steering knuckle.
A knuckle used on a Steering axle that has no additional components attached. Part has related components that cannot be reused/reinstalled; upper bolt, lower bolt and locknut. Stamped #KSM. To Chassis/VIN FP-H-150 000.

Steering Knuckle

2013-2016, KSM. A5, S5; Left; KSM. CONVERTIBLE, KSM. Coupe, from 11/2009, KSM. From 11/01/2009, KSM. From 11/2009, KSM. KSM. KSM, code GP2. Q5; Left; KSM. SQ5; Left; KSM.
Steering Knuckle - Repair or Replace
The steering knuckle in your may need to be replaced if it has become damaged or rusty, which will usually be determined during a related repair.