FEDERAL EMISSIONS. HATCHBACK 2011-13. SEDAN 2010-13. A component which provides a sealing surface at the Exhaust System Resonator. Calif. Exhaust Crossover Gasket. Exhaust Pipe Connector Gasket. Exhaust Pipe to Manifold Gasket. Federal. Gasket for Catalytic Converter System. Gasket for Exhaust Muffler. Sealing material that connects to flange on Exhaust Pipe. Included with: Center Muffler, Center Pipe, Pipe assembly, Rear Muffler.