Buy Audi S5 4.2L V8 M/T Suspension Control Arm (Rear, Lower). A4, S4; Left. A5, S5; Left. From 09/13 Arms, Become, Bent - OEM Audi Part # 8K0407693AF (8K0-407-693-AF, 8K0407693S)

Arm. Cntl. Link. Suspension Control. Wishbone.
From 05/17/2010. From 11/02/2009. Incl.Ball Joint & Bushings. Suspension component that connects and provides pivotal movement of the Steering Knuckle to the vehicle.

Suspension Control Arm

Fits S5 (2010 - 2011)

A4, S4; Left. A5, S5; Left. From 09/13/2010, w/345mm rotor. From 11/2009. From 11/2009 to 8/2010, from 11/2009 to 8/2010. From 11/2009 to 9/10/2010, from 11/2009 to 9/10/2010. FROM 11/2009, to 08/2010. From 9/2010, w/345mm brakes. Q5; Left. W/345mm rotor.
Suspension Control Arm - Repair or Replace
Control arms often don’t fail on their own, although their associated bushings can break or wear causing a clunk noise when your Audi S5 goes over bumps or changes speed rapidly—whether braking or under hard acceleration. Control arms can also sometimes become bent, causing your vehicle to pull to the left or right.