2.5 LITER. Muffler & pipe nut. A solid metal or plastic block with a threaded hole in the center which is used to tighten or adjust the Exhaust System Hanger. A solid metal or plastic block with a threaded hole in the center which is used to tighten or adjust the Exhaust Tail Pipe. Catalytic Converter Bolt. Catalytic Converter Nut. Exhaust Flange Nut. Exhaust Manifold Nut. Exhaust Muffler Nut. Exhaust Pipe Nut. Nut that secures Suspension Stabilizer Bar Bracket. Part cannot be reused/reinstalled. Suspension Stabilizer Bar Link Nut. Included with: Catalytic Converter, Catlytic Converter, Lower Bracket, Right Catalytic Converter.