5.7 & 6.1 LITER. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Starter Shield to it's mounting point. An exhaust Bolt is a specialized fastener designed to secure various components of an exhaust system, including the manifold, catalytic converter, and exhaust pipes. Exhaust System Hanger Bolt. Starter Bolt. Heat Shield. Center insulator mount. Exhaust System Hanger. Extension pipe. HEX HEAD. Intermed pipe. Stabilizer link screw.