This direct-fit catalytic converter is designed specifically for the 2004-2011 Mazda RX-8 and interchanges with OE parts N3H4-20-55XL and N3Y6-20-55X, among others. The included gaskets & hardware reduce the possibility of a leaking seal while avoiding the need to reuse corroded factory parts for installation. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with Federal/EPA Emission systems.
