Master cylinder lock nut. A solid metal or plastic block with a threaded hole in the center which is used to tighten or adjust the Battery Cable. Back Glass Wiper Arm Nut. Brake Master Cylinder Nut. Starter Nut. Vendor:CONTINENTAL TEVES. Windshield Wiper Arm Nut. Back Glass Wiper Arm. Battery Cable. Brake Master Cylinder. Locking. Positive Cable. Starter. Windshield Wiper Arm. Included with: Master Cylinder, Master Cylinder Part cannot be reused/reinstalled.