“MagnaFlow 99-02 Miata L4 1.8 OEM Underbody Direct Fit Converter”
“...direct-fit catalytic converter is designed specifically for the 1999-2005 Mazda Miata and interchanges with OE parts BP6F-20-55XC and BP6F-20-55XA, among others...”
Confirm fitment with the part number before ordering.
Product information
Manufacturer information. Check the part number and installation requirements for your vehicle.
Supplier details checked 2026-09-23 · Test catalog
Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
OE-sized barbed exhaust hangers made from corrosion-resistant 410 stainless steel, designed to reduce noise and vibration
High Strength 16 Gauge 409 Stainless Steel Tubing For Exceptional Corrosion Resistance And Maximum Service Life
Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
Expertly Crafted To Replicate Oem-Like Flow Dynamics/Maintaining Factory Performance And Fuel Efficiency
Torca Accuseal Exhaust Clamps Provide A Full 360-Degree Equally Distributed Clamping Force
Simplifies Installation With Essential Gaskets And Hardware Being Included In The Box
OE-Sized Barbed Exhaust Hangers Made From Corrosion-Resistant 410 Stainless Steel
Your Trusted Source For EPA-Compliant Catalytic Converters
Mandrel Bent Tubing Retains Oem-Like Design And Geometry
Durable 308 stainless steel MIG welds
Manufacturer notes
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-286. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun body converter yourself using the proper tools, no cutting or welding required. MagnaFlow's state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE spun body design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This direct-fit catalytic converter is designed specifically for the 1999-2005 Mazda Miata and interchanges with OE parts BP6F-20-55XC and BP6F-20-55XA, 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 California or Federal/EPA Emission systems.
Not legal for sale or installation in California, Colorado or New York.
Not legal for sale or installation in California; Colorado or New York.
Supplier category
Exhaust, Mufflers & Tips
Supplier subcategory
Catalytic Converter Direct Fit
UPC / barcode
888563156644
Units per product
1
Supplier Proposition 65 status
N
Supplier EPA status
Compliant
Air freight prohibited
No
Not CARB approved
Yes
CARB acknowledgement required
Yes
Freight delivery required
No
Powersports product
No
More manufacturer information
Other product descriptions
MagnaFlow 99-02 Miata L4 1.8 OEM Underbody Direct Fit Converter
Catalytic Converter
OEM Grade
OEM
About the manufacturer
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-286. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun body converter yourself using the proper tools, no cutting or welding required. MagnaFlow's state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE spun body design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This direct-fit catalytic converter is designed specifically for the 1999-2005 Mazda Miata and interchanges with OE parts BP6F-20-55XC and BP6F-20-55XA, among others. Avoid potential exhaust leaks by using the included gaskets to get a proper seal. 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 California or Federal/EPA Emission systems.
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-286. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this converter yourself using the proper tools, no cutting or welding required. MagnaFlow's state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This Direct-Fit Catalytic Converter is designed to fit the 1999-2005 Mazda Miata 1.8L. MagnaFlow 21-286 includes (1) Flat Ring Gasket, (1) Flange Gasket, (1) Torca Clamp and interchanges with OE parts BP6F-20-55XA, BP6F-20-55XB, BP6F-20-55XC. 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 California or Federal/EPA Emission systems.
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