1.6 LITER. Catalytic cnvrtr screw. W/AUTO TRANS. An exhaust Bolt is a specialized fastener designed to secure various components of an exhaust system, including the manifold, catalytic converter, and exhaust pipes. Catalytic Converter Bolt. Exhaust Muffler Bolt. Exhaust System Hanger Bolt. Liftgate Trim Scuff Plate Screw. AND Washer Assembly. Catalytic cnvrtr. Catalytic Converter. Exhaust System Hanger. Liftgate Trim Scuff Plate. Mount bracket. Muffler. Sill Plate.