Buy OEM Ford Part # W520216S440 (-W520216-S440, W520216-S440). Nut. Arm. Control. (Rear, Upper, Lower). 2006-10. 2006-10, #2. 2011-12. 2017-20. 2021-23. 2021-23, upper. AWD. AWD, inner, M16. Inner. No

Lateral Arm Nut. Leaf Spring Shackle Nut. Part cannot be reused/reinstalled. Rack and Pinion Nut. Suspension Control Arm Nut. Suspension Stabilizer Bar Link Nut. Suspension Strut Nut. Suspension TRack Bar Nut. Suspension Trailing Arm Nut. Included with: Shock assembly, Strut.

Suspension Control Arm NutSuspension Stabilizer Bar Link NutSuspension Stabilizer Bar Bracket NutSuspension Trailing Arm NutLeaf Spring Shackle NutSuspension Track Bar NutSuspension Strut NutLateral Arm NutRack and Pinion Nut

2006-10. 2006-10, #2. 2011-12. 2017-20. 2021-23. 2021-23, upper. AWD. AWD, inner, M16. Inner. No. 2. Rear. RWD. RWD, inner. Upper. W/RAPTOR.
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 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.