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Ships within 48 hours · Estimated delivery Jul 28 - Aug 2
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Description
2016-2018 Mazda MX-5 Miata OEM Direct-Fit Catalytic Converter 21-321 MagnaflowOverview: OEM Grade Direct Fit Catalytic Converter Keep the check engine light off with MagnaFlow OEM Grade Federal EPA Compliant Direct Fit Catalytic Converter 21 321. 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
Overview:
OEM Grade Direct-Fit Catalytic Converter
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-321. 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.
Note : Not For Sale in California
Interchange:
| Brand | Interchange Part Number |
|---|---|
| Mazda | PEJ5-20-55X |
| Mazda | PEJ52055X |
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| 2016 - 2018 | Mazda | MX-5 Miata | 2L/L4 |
Specs:
| Air Tube Adaptable | No |
|---|---|
| Body Height | 5 IN |
| Body Shape | Round |
| Body Type | Spun |
| Body Width | 5 IN |
| Clamp Included | Yes |
| Converter Quantity | 1 |
| Finish | Stainless Steel |
| Gasket Included | Yes |
| Hangers Included | Yes |
| Heat Shield Material | None |
| Inlet Diameter | 2.25 |
| Inlet Inside Diameter | 2.25 |
| Main Piping Diameter | 2.25 |
| Outlet Diameter | 2.25 |
| Outlet Inside Diameter | 2.25 |
| Oxygen Sensor Location | Pre Converter |
| Series | OEM Grade |
| Substrate | Ceramic |
FEATURES
- EPA OBDII COMPLIANT - This catalytic converter is designed to meet or exceed Federal EPA (Environmental Protection Agency) OBDII emissions requirements in compliance. Item is NOT shippable to CA or CO AND any order will need to be CANCELED if shipping address is located in either state
- KEEP THE CHECK ENGINE LIGHT OFF - This MagnaFlow OEM Grade catalytic converter has been engineered to satisfy the vehicle computer control monitoring requirements for the specific applications listed. Such exacting standards keep the check engine light off while guaranteeing long-term reliability
- STAINLESS-STEEL CONSTRUCTION - The utilization of highly corrosion resistant stainless-steel construction, free-flowing mandrel bent pipes and MagnaFlow’s cutting-edge CNC precision robotic manufacturing techniques ensure consistently perfect fitment, reliability, and superior longevity
- 5 YEAR / 50,000-MILE LIMITED WARRANTY - Worry-free ownership is made possible thanks to the 5 year/50,000-mile construction and 25,000-mile emissions warranty included with this MagnaFlow catalytic converter
- DIRECT-FIT - The direct-fit configuration of this catalytic converter allows it to function as a bolt-on replacement, enabling hassle-free installation with necessary hardware included. MagnaFlow utilizes state-of-the-art 3D scanning technology during the research and development process to ensure this new converter will perform exactly like the original equipment. This MagnaFlow part is vehicle specific, confirm fitment details above in "Confirmed Fit" feature
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.0 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 5
Calzado elegante para oficina de excelente calidad
Producto de excelente calidad. La entrega fue rápida y el empaque llegó en perfectas condiciones. Cumple completamente con lo descrito en la publicación.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026
★★★★★ 3
Not A Walking Shoe
Size: 9.5, Color: Black/British Tan
In the photo online this shoe looks like it will be very comfortable. Kind of a classy Coach's Shoe. Also in the photo the heel portion of the sole looks thick and supportive. I bought them thinking they would be my go-to travel shoe. Wrong.
This is not a comfortable shoe for extended wear. Short durations, OK. The main problem is that the sole is very thin and flexible in all directions. There is no, as in zero arch support, plus that thin heel means that you tend to rock back on your heels and it feels like you're pounding the pavement.
I've worn once and I'm very disappointed. They look great, definitely high quality materials, but using them for the intended purpose of travel.... fah get about it.
If you're looking for a good looking shoe to wear around the gym and you don't intend to use the treadmill, or elliptical, then this is the shoe you want.
They would definitely be returned if I hadn't already worn them outside.
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Reviewed in the United States on August 11, 2023
★★★★★ 5
Great shoe!
Size: 14 Wide, Color: Woodbury Handstain
Great shoe- better leather cover than last pair that scuffed if you blinked at them.
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Reviewed in the United States on March 15, 2026
★★★★★ 5
Very nice, but sizing is inconsistent
Size: 10 Wide, Color: Ivory/White/British Tan
All of these Cole Haan shoes are extremely well made and I like the styling. On the other hand, the sizing is very inconsistent and you may end up having to do a lot of returns trying to find the right size. Then if you get a different color of it, you may find the sizing different yet again.
If you find your right zie, they are really nice shoes at a very reasonable price for the quality.
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Reviewed in the United States on February 6, 2026
★★★★★ 5
I love this brand. These shoes look and fit great!
Size: 13 Wide, Color: Black/White/Black
I love wearing Cole Haan shoes. This is the second pair I’ve owned and the style just gets me. I’ve worn these to work at a great professional job every day, not just casual Friday. I wear these when I head out shopping or to dinner. They are functional, comfortable, built for regular and bigger wider feet and comfortable. I am 6 feet tall and my feet have changed size over the years to me needing a wider shoe to relieve pressure on my toes and front wide porting of my foot. So the 13W feels great and still walks the same as a regular 14 but more comfort for me. They look amazing and qualify in some offices as dress shoes (depending on company rules they will justify a sneaker as a shoe with the tan colored “gum” sole as a sneaker) so check company policy. The black sole on this makes it look more dressy. I am switching out the laces to match my previous Cole Haan because I think the white shoelaces look better. As an adult, aside from my Kenneth Cole boots Reaction boots and Doc Marten’s these are the only shoes I will pay 3 digits for. This looks like skater shoes but with a more mature look.
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Reviewed in the United States on December 19, 2025
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