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The MagnaFlow 23684 is a direct-fit catalytic converter for the 1990–1993 Mazda Miata with the 1.6L engine and Federal/EPA emissions equipment. It bolts on with the included flange gaskets and needs no cutting or welding. Mandrel-bent stainless steel tubing and a single laser-fusion weld keep flow high and leaks unlikely. It is the practical choice for a stock NA Miata that failed a smog check or has a rusted-out original converter, and it is far easier to install than a universal weld-in unit. It is not legal for California or other CARB states, so check your emissions rules first.
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Lowest price we've seen: $285.99 on Nov 13 at Moss Miata. Tracked across 15 stores since Nov 13.
Owners of NA Miatas generally report the 23684 bolts up to the stock exhaust with little fuss and clears the check engine light. Most praise the fit and build for a stock replacement; the main complaints are that it is not CARB-legal and that it does little for sound or power.
This direct-fit catalytic converter is a replacement part for the 1990-1993 Mazda Miata with the 1.6L engine. It is designed to meet or exceed Federal emissions requirements set by the EPA. It complies with legal standards for OBDII Federally registered vehicles with Federal/EPA emission systems.
It is built from corrosion-resistant stainless steel with free-flowing mandrel-bent tubing. A single laser fusion weld replicates the original equipment design and reduces the possibility of a leak. The compact, low-mass design allows for greater thermal efficiency.
The part was developed using 3D scanning to fit and function like the original equipment. No cutting or welding is required, so it can be installed with the proper tools.
