Universal Catalytic Converter – 2.25" Non-CA - MagnaFlow 91005

Restore emissions performance and keep your Miata track-ready with the MagnaFlow 91005 Standard Grade Universal Catalytic Converter – 2.25” inlet/outlet. Engineered for pre-OBDII vehicles (1995 and older), this cat is EPA/Federal compliant only and designed to help keep the check engine light off while reducing harmful emissions.

Made from highly corrosion-resistant stainless steel, the 91005 is built to endure extreme heat cycles and harsh driving conditions. The ribbed body and welded seams prevent expansion and distortion, ensuring a long service life. MagnaFlow’s proven honeycomb catalyst substrate maximizes exhaust flow while delivering reliable emissions conversion efficiency.

With its universal design, this converter can fit a wide range of applications—including Miata builds and custom exhaust projects—but requires cutting and welding for installation. The compact design makes it a favorite for enthusiasts building lightweight, custom exhaust systems where space is limited.

Key specs include:

• Inlet/Outlet Diameter: 2.25"

• Body Shape: Round, stainless steel

• Compliance: Federal EPA only (not legal in California, New York, Colorado, or Maine)

Whether you’re refreshing a high-mileage NA Miata or fabricating a performance exhaust that still needs to pass Federal EPA emissions checks, the MagnaFlow 91005 Universal Cat delivers OEM-grade reliability and aftermarket flexibility. Backed by MagnaFlow’s reputation for quality exhaust components, it’s the go-to choice for enthusiasts who want both performance and compliance.

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