Bolt. A / C Compressor. Belt Tensioner. For The Engine Coolant Pipe. Bracket. Engine Coolant Thermostat Housing. Engine Water Pump. Flange. MT. Power Steering Pump. Switch Harness Pump. Turbocharger Mounting. A Threaded Rod with a Drive Head (such as Hex. 12 Point. torx. etc) on One End used to secure The Drive Belt Cover to its Mounting Point.