Left. Right. Upper cntrl arm nut. A Nut which secures the suspension knuckle to its mounting point. A solid metal or plastic block with a threaded hole in the center which is used to tighten or adjust the Active Suspension Air Spring. A solid metal or plastic block with a threaded hole in the center which is used to tighten or adjust the Suspension Strut Fork. Nut For the Engine Mount. Nut that secures Suspension Stabilizer Bar Bracket. Nut used to secure the Steering Tie Rod. Parking Brake Nut. Part cannot be reused/reinstalled. Steering Knuckle Nut. Suspension Control Arm Nut. Suspension Stabilizer Bar Link Nut. Suspension Strut Nut.