. WAGON. Wiper arm nut. A solid metal or plastic block with a threaded hole in the center which is used to tighten or adjust the Seat Belt Guide. Back Glass Wiper Arm Nut. Back Glass Wiper Motor Nut. Part cannot be reused/reinstalled. Windshield Wiper Arm Nut. HX STY1 WITH THRED ADHESIVE. Back Glass Motor. Seat belt guide retainer. Windshield. Included with: Lock pillar trim.