Mazda RX-8 Catalytic Converter - Rear - Magnaflow - HM Grade Direct-Fit (Federal/EPA Compliant), Spun Body Stainless Steel - `04-`11
Mazda RX-8 Catalytic Converter - Rear - Magnaflow - HM Grade Direct-Fit (Federal/EPA Compliant), Spun Body Stainless Steel - `04-`11

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Mazda RX-8 Catalytic Converter - Rear - MagnaFlow - HM Grade Direct-Fit (Federal/EPA Compliant), Spun Body Stainless Steel - '04-'11. A direct-fit replacement catalytic converter engineered to match OE form and function for 2004–2011 Mazda RX-8 models, built to meet federal EPA emissions requirements.
This MagnaFlow HM Grade converter replicates the OE spun-body design and is developed using precision 3D scanning to ensure fitment. The compact, low-mass construction and single laser fusion weld reduce leak points and support efficient thermal performance. The unit includes gaskets and hardware to simplify installation and avoids reusing corroded factory parts. It interchanges with OE part numbers N3Y6-20-55X and N3Y3-20-55X and is intended for federally-registered OBDII vehicles.
Features
- Direct-fit rear converter for 2004–2011 Mazda RX-8 (HM Grade)
- Federal / EPA-compliant design (not CARB-certified)
- Spun-body stainless steel construction with single laser fusion weld
- Includes gaskets & installation hardware to reduce leak risk
- OE-interchange: N3Y6-20-55X, N3Y3-20-55X
- Mandrel-retained flow dynamics and corrosion-resistant materials
This part is designed to meet federal emissions standards and help maintain proper engine operation when installed correctly. Note: not legal for sale or installation in California, Colorado, or New York where state-specific (CARB) approval is required. If you have questions about fitment, legal compliance, or installation options, call us directly — we’re happy to help. We have two service locations offering installation and customization: Austin, Texas and the Los Angeles, California area. Call us at 512-982-9393 (TX) or 562-981-6800 (CA).
If you are considering purchasing multiple items, please contact us for possible shipping discounts. We install on premises at both locations.
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov










































