SKU: 87456851482

Catalytic Converter for 2001-2003 Mazda Protege 2.0L MagnaFlow 51737

Sale price$222.30 Regular price$247.00
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Ships within 48 hours · Estimated delivery Aug 1 - Aug 6

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Description

Catalytic Converter for 2001-2003 Mazda Protege 2.0L MagnaFlow 51737Overview: Keep the check engine light off with MagnaFlow OEM Grade Federal EPA Compliant Direct Fit Catalytic Converter 51737. 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

Overview:

Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 51737. 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. Designed to fit the 2001-2003 Mazda Protege and 2002-2003 Mazda Protege5, this direct-fit catalytic converter also interchanges with OE parts FSAG-20-600A, FSAH-20-600A, among others. Hardware is included to eliminate the hassle of working with corroded factory parts.

Note : Not For Sale in California

Interchange:

Brand  Interchange Part Number
Mazda FS7N-20-600A
Mazda FS7P-20-600A
Mazda FSAF-20-600A
Mazda FSAG-20-600A
Mazda FSAH-20-600A
Mazda FS7N20600A
Mazda FS7P20600A
Mazda FSAF20600A
Mazda FSAG20600A
Mazda FSAH20600A
Mazda FS7N-20-600A
Mazda FS7P-20-600A
Mazda FSAF-20-600A
Mazda FSAG-20-600A
Mazda FSAH-20-600A
Mazda FS7N20600A
Mazda FS7P20600A
Mazda FSAF20600A
Mazda FSAG20600A
Mazda FSAH20600A

Application:

Year Make Model Submodel Engine Size
2001 - 2003 Mazda Protege 2L/L4
2002 - 2003 Mazda Protege5 2L/L4

Specs:

Body Material Stainless Steel
Overall Length (In.) 43
Substrate Material Ceramic
Air Tube Adaptable No
Converter Quantity 1
Inlet Attachment Bolt-On
Finish Stainless Steel
Series OEM Grade
Material Stainless Steel
Subtitle Federal / EPA Compliant
Title OEM Grade Direct-Fit
Type Direct-Fit
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 87456851482

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4.0 ★★★★★
Based on 9 reviews
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A
Verified Purchase
Amazon Customer
Phoenix, US
★★★★★ 4
more power
get more horse power & gas mileage
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2026
S
Verified Purchase
Stymy
New York, US
★★★★★ 5
It Fits
it s fit and works like other K &N products
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 8, 2025
M
Verified Purchase
Mason
Dallas, US
★★★★★ 5
Great product
Size: 9.3" x 9.7" x 1.8"
I recently installed the BOSCH 6029C HEPA Cabin Air Filter, and the difference was noticeable right away. The air inside my car feels much cleaner and fresher, especially when driving in traffic or through areas with a lot of dust and pollution. It does a great job filtering out odors, pollen, and even fine particles—I’ve had fewer allergy issues since switching to this filter. Installation was straightforward and only took a few minutes, even without much mechanical experience. The build quality is solid, and it fits perfectly without any gaps or issues. Compared to standard cabin filters, this HEPA version is definitely a step up in terms of filtration performance. Overall, I’d highly recommend this to anyone looking to improve their in-car air quality. It’s a small upgrade that makes a big difference in comfort, especially for daily drivers or people sensitive to allergens.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 3, 2026
C
Verified Purchase
Chad I
Grantham, US
★★★★★ 5
Good quality!
Size: 9.3" x 9.7" x 1.8"
This cabin air filter is seriously a game-changer for my car's interior air quality. I was getting tired of that stale, dusty smell every time I turned on the AC. Swapping it out was surprisingly easy, and the difference was noticeable almost immediately. It really does trap all those tiny particles, like pollen and dust, that used to make my allergies flare up. Now, the air inside my vehicle feels so much fresher and cleaner. I've been recommending this brand to all my friends who are looking for a reliable filter. It's definitely worth the investment for a more comfortable driving experience. Seriously, if you're on the fence, just go for it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
B
Verified Purchase
Bartek
Lexington, US
★★★★★ 5
Noticeable upgrade in air quality and a seamless installation
Size: 9.3" x 9.7" x 1.8"
I'm generally skeptical of the "HEPA" marketing for automotive filters, but after installing this in my Honda, the reduction in exterior odors—especially exhaust and pollen—is actually significant. The construction feels far more robust than the flimsy OEM paper filters I’ve used in the past; the pleats are dense and well-reinforced, which gives me more confidence in its filtration efficacy over a 12,000-mile interval. Installation was straightforward and took less than five minutes. It’s a precision fit with no gaps around the edges, ensuring that all intake air is actually being routed through the media rather than bypassing it. One thing to note is that you might notice a very slight decrease in max fan velocity due to the increased density of the HEPA material, but the tradeoff for cleaner air is well worth it in my opinion. If you live in an area with high pollution or suffer from seasonal allergies, this is a legitimate quality-of-life improvement for your daily commute.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 26, 2026

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