SKU: 55344854040

Catalytic Converter for HM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter MagnaFlow 24178

Sale price$115.65 Regular price$128.50
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Ships within 48 hours · Estimated delivery Sep 8 - Sep 13

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Description

Catalytic Converter for HM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter MagnaFlow 24178Overview: Keep the check engine light off with MagnaFlow HM Grade Federal EPA Compliant Direct Fit Catalytic Converter 24178. 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

Overview:

Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 24178. 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 2004-2013 Mazda 3 and interchanges with OE parts L353-20-55XH, L326-20-55XK, among others. Avoid potential exhaust leaks by using the included gaskets to get a proper seal.

Note : Not For Sale in California

Interchange:
Brand  Interchange Part Number
Mazda L326-20-55XK
Mazda L327-20-55XK
Mazda L328-20-55XK
Mazda L329-20-55XK
Mazda L351-20-55XH
Mazda L352-20-55XH
Mazda L353-20-55XH
Mazda L354-20-55XH
Mazda L3C2-20-55XD
Mazda LF13-20-55XK
Mazda LF14-20-55XM
Mazda LF62-20-55XD
Mazda L3262055XK
Mazda L3272055XK
Mazda L3282055XK
Mazda L3292055XK
Mazda L3512055XH
Mazda L3522055XH
Mazda L3532055XH
Mazda L3542055XH
Mazda L3C22055XD
Mazda LF132055XK
Mazda LF142055XM
Mazda LF622055XD
Mazda L326-20-55XK
Mazda L327-20-55XK
Mazda L328-20-55XK
Mazda L329-20-55XK
Mazda L351-20-55XH
Mazda L352-20-55XH
Mazda L353-20-55XH
Mazda L354-20-55XH
Mazda L3C2-20-55XD
Mazda LF13-20-55XK
Mazda LF14-20-55XM
Mazda LF62-20-55XD
Mazda L3262055XK
Mazda L3272055XK
Mazda L3282055XK
Mazda L3292055XK
Mazda L3512055XH
Mazda L3522055XH
Mazda L3532055XH
Mazda L3542055XH
Mazda L3C22055XD
Mazda LF132055XK
Mazda LF142055XM
Mazda LF622055XD

Application:

Year Make Model Submodel Engine Size
2004 - 2013 Mazda 3 2L/L4
2004 - 2009 Mazda 3 2.3L/L4
2010 - 2013 Mazda 3 2.5L/L4

Specs:

Air Tube Adaptable No
Sensor Port Count 0
Overall Length (In.) 22.375
Mounting Hardware Included Yes
Heat Shield Attached No
Outlet Attachment Clamp-On
Inlet Attachment Bolt-On
Material Stainless Steel
Hangers Included No
Clamp Included No
Series HM Grade
Subtitle Federal / EPA Compliant
Title HM Grade Direct-Fit
Type Direct-Fit
Gasket Included Yes
Finish Stainless Steel
Converter Quantity 1
Substrate Material Ceramic
Main Piping Diameter 2.5
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: 55344854040

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4.8 ★★★★★
Based on 16 reviews
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Product Reviews
M
Verified Purchase
m.vq35
Fort Morgan, US
★★★★★ 1
Bad
Horrible air flow I don’t recommend and yes it was installed correctly. Don’t waste your money
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 17, 2026
B
Verified Purchase
Barry
West Palm Beach, US
★★★★★ 5
Maintained airflow
Difficult to know how well it’s filtering the air. But it installed correctly and I am still getting good airflow through my vents
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 8, 2026
B
Verified Purchase
Balletkitty66
New York, US
★★★★★ 5
High-Quality Cabin Filter with Carbon Pre-Filter
This filter was easy to install in a 2010 Honda Fit. I wanted a HEPA filter given my severe allergies. The honeycomb carbon side looks similar to my Winix and Air Doctor carbon filters so it felt high quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 18, 2025
C
Verified Purchase
Christian Gilchrist
Carnegie, US
★★★★★ 5
Perfect for Honda 2019 civic sport
Good fresh clean air
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 3, 2025
D
Dee T
New York, US
★★★★★ 5
Good alternative without
This filter kit is a convenient all-in-one replacement for my 2011–2017 Honda Odyssey. Both the cabin and engine air filters fit perfectly and were easy to swap out in just a few minutes. The quality feels solid, and it’s great not having to buy the filters separately. A quick upgrade that helps the van run cleaner and keeps the cabin air fresh.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 10, 2025

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