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1) Racing Beat header outlet to Mazda OE catalytic converter inlet.
2) Catalytic converter to connecting pipe. This gasket can be used on the outlet of the catalytic converter between the either the Mazda OE exhaust system, or the Racing Beat connection pipe section.
3) Connecting pipe to muffler. This gasket can be used between the Racing Beat connection pipe section (both Sport and Power Pulse versions) and the Racing Beat muffler.