#2. 2009-15 W/AWD. Feed line bolt. PartQualifier: #2. TT. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Turbocharger Heat Shield to a mounting point. Engine Coolant Overflow Hose Bolt. Engine Coolant Pipe Bolt. Engine Crankshaft Position Sensor Bolt. InterCooler Pipe Bolt. Turbocharger Coolant Line Bolt. Turbocharger Oil Line Bolt.