Left. Level sensor nut. Right. 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. Headlight Level Sensor Nut. Suspension Control Arm Nut. Cap. Ft lock. Headlight Level Sensor. HexAGON. Holder retainer. Mount bracket. Suspension Control. Suspension Ride Height Sensor. Included with: Shock assembly.