Buy 2012 Lincoln MKZ Nut. Arm. Control. (Rear, Upper). At knuckle. Suspension Control Arm - Repair Arms, Causing, Ft, Height - OEM Lincoln Part # W711660S439 (-W711660-S439, W711660-S439)

A solid metal or plastic block with a threaded hole in the center which is used to tighten or adjust the Active Suspension System Height Sensor. Suspension Control Arm Nut. Ft cntl lock. Ft lateral. Lever Assembly retainer. Link. Suspension Ride Height Sensor. Trailing.

Suspension Control Arm NutSuspension Ride Height Sensor Nut

Fits Expedition, Navigator

At knuckle.
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 2012 Lincoln MKZ 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.