2.5 LITER TURBO. 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 Water Pump Pulley Bolt. Turbocharger Coolant Line Bolt. Turbocharger Mounting Bolt. Turbocharger Oil Line Bolt. Vapor Canister Purge Solenoid Bolt.