Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 11 - Jul 16
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
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:
SubtitleFederal / EPA CompliantTitleOEM Grade Direct-FitTypeDirect-Fit| 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
4.5 ★★★★★
Based on 203 reviews
Sort
Product Reviews
★★★★★ 5
Good product. My dog is very entertained and stimulated by playing with it.
Color: Green, Size: Small (2.0 in, Pack of 2)
I'M AMENDING THIS REVIEW AND ADJUSTING THE RATING UPWARD! Though it took my dog a little while to adjust to how differently this ball behaves, HE LOVES IT NOW. I wish I could give you a sense of how enjoyable and comically entertaining it is to play with him using it. ORIG. REVIEW: Bought this for a little 8 lb. aggressive chewer who loves to play fetch. I initially bought the 2" Chuckit! Ultra ball previously. It is the most amazingly durable product I've found for this pup. Very firm, but not hard on his teeth. He's very quick and agile, so I thought he would like the eye-mouth coordination challenge of a ball that changes direction suddenly. I guess my only disappointment with the product is that the ball is hollow instead of having a solid core like the Ultra ball, so he doesn't enjoy chomping down on it the same way. The erratic bounce feature is entertaining, but the pup is a little skittish, so he was intimidated at first. He's warmed up to it, but not with the same enthusiasm as the Ultra ball. Having said all this, I don't fault the product for the rating I gave it. It is a quality-made product that performs as advertised. I just didn't anticipate that my dog would be less enthusiastic than I thought.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 26, 2016
★★★★★ 5
Awesome
Color: Green, Size: Large (3.0 in, Pack of 1)
Love all the chuckit balls and products and so does my dog. Very durable
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 2, 2026
★★★★★ 5
Highly entertained golden retriever!
Color: Green, Size: Large (3.0 in, Pack of 1), Color: Green, Size: Large (3.0 in, Pack of 1)
My golden retriever spends hours chasing this ball. Its erratic bounce pattern keeps him engaged and guessing where to chase the ball. It is durable and stands up to chewing well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 24, 2026
★★★★★ 4
Great quality ball
Color: Green, Size: Medium (2-1/2 in (Pack of 2))
The product is great no issues. It’s very durable. All of this brands products are strong and durable. The only reason I gave it a four star is I think my dogs prefer more the blue round balls. So that being said, I won’t buy these anymore, but they love the blue ones whether they’re the recycled or not. Great company!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2025
★★★★★ 5
Unique bouncing
Color: Green, Size: Medium (2-1/2 in (Pack of 2))
Outside of many my kids🐶 balls this one his best favorite for than the others as the bounce is high and unpredictable that makes it more intellectual and exciting for him
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
recommand products
Westin 72-35492 - Slim Wind Deflector 4 pc. Smoke For Quad Cab Extended
70.00
HKM-164627 Reversible Blue Camo Plush Comforter Set with Faux Rabbit Hair for All-Season Use
126.99
Westin 72-35470 - Slim Wind Deflector Front 2 pc. Smoke For Quad Cab
49.00
Westin 72-35499 - In-Channel Wind Deflector 4 pc. Smoke For Mega Cab Extended Crew
62.00
Westin 72-34704 - Ultraguard Bugshield Smoke
75.00