Universal Catalytic Converter – 2.25" Inlet - MagnaFlow 99205HM

Upgrade your Miata’s exhaust system with the MagnaFlow 99205HM HM-Grade Universal Catalytic Converter (2.25" inlet/outlet), engineered to meet Federal EPA emissions standards while delivering long-lasting durability and performance. Designed for OBDII-equipped vehicles with Federal/EPA emission systems, this converter helps keep the check engine light off and restores proper emissions control.

Built with stainless steel construction and a ribbed body with welded seams, the 99205HM resists corrosion and vibration fatigue for a long service life. The honeycomb catalyst substrate ensures efficient exhaust flow while reducing harmful gases to meet EPA compliance. This universal design offers wide vehicle compatibility—including the 1990–2005 Mazda MX-5 Miata (Federal emissions models)—but requires cutting and welding for installation.

With a 2.25-inch inlet and outlet diameter and a compact body style, this cat is ideal for both stock replacement and custom exhaust builds. Whether you’re refreshing a high-mileage street Miata or fabricating a track-ready system that still needs to pass emissions, MagnaFlow delivers trusted quality backed by decades of performance exhaust engineering.

Note: Not legal for sale or installation on vehicles registered in California, Colorado, New York, or Maine. Designed for Federal EPA emissions compliance only.

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