2.5 LITER NON TURBO. 2018-24. A threaded rod which is used along with a nut to provide clamping force to the Exhaust System Resonator. Catalytic Converter Stud. Exhaust Pipe Stud. Fastener with threads on both ends to either attach the Exhaust manifold to the cylinder head or the Exhaust Pipe to the Exhaust manifold. Flange. Catalytic cnvrtr. Converter and Pipe. Exhaust Manifold. Insulator. Mnfd w/Converter. Included with: Catalytic Converter, Converter, Converter & Pipe, Manifold, Manifold w/Converter, Manifold with Converter, Muffler, Muffler & Pipe, Rear Muffler, Resonator & Pipe.