SKU: 5803866648

Catalytic Converter for 2004-2009 Audi S4 4.2L OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter MagnaFlo

Sale price$457.20 Regular price$508.00
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USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 3 - Aug 8

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Description

Catalytic Converter for 2004-2009 Audi S4 4.2L OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter MagnaFloOverview: Keep the check engine light off with MagnaFlow OEM Grade Federal EPA Compliant Direct Fit Catalytic Converter 49918. 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 49918. 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 2004-2009 Audi S4 and interchanges with OE parts 8E0 254 551 QX and 8E0 254 554 QX.

Note : Not For Sale in California

Interchange:

Brand  Interchange Part Number
Audi 8E0 254 551 QX
Audi 8E0 254 554 QX
Audi 8E0254551QX
Audi 8E0254554QX
Audi 8E0 254 551 QX
Audi 8E0 254 554 QX
Audi 8E0254551QX
Audi 8E0254554QX

Application:

Year Make Model Submodel Engine Size
2004 - 2009 Audi S4 4.2L/V8

Specs:

Body Material Stainless Steel
Overall Length (In.) 48.3
Title OEM Grade Direct-Fit
Substrate Material Ceramic
Air Tube Adaptable No
Converter Quantity 2
Inlet Attachment Bolt-On
Material Stainless Steel
Finish Stainless Steel
Type Direct-Fit
Main Piping Diameter (In.) 2.5
Subtitle Federal / EPA Compliant
Oxygen Sensor Location Pre and Post Converter
Series OEM Grade
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: 5803866648

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4.3 ★★★★★
Based on 10 reviews
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Product Reviews
P
Verified Purchase
pawel
Grantham, US
★★★★★ 5
Good quality, fits perfect
Style: CA10165
Good quality, fits perfect
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 22, 2025
E
Verified Purchase
Eduanny Díaz loyo
Fort Morgan, US
★★★★★ 5
Excelente
Style: CA10165
Excelente
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 22, 2025
C
Candor McMufflekins
Los Angeles, US
★★★★★ 5
Fits good
Style: CA10165
we'll see how well it works, but the filter is the right size, seems made fine, and went in with no trouble.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 17, 2025
E
Verified Purchase
Efrain
Battle Creek, US
★★★★★ 5
Great
Good quality and price. Perfect size fit. Easy to install
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
K
Verified Purchase
Kaya
Alexandria, US
★★★★★ 5
Great Quality Filter and Perfect Fit for My 2022 CR-V
I bought this EPAuto air filter for my 2022 Honda CR-V 1.5L, and it couldn’t have been easier to install. It fits exactly like the original — snug and secure — and the whole process took under five minutes without any tools. Just open the air box, pull out the old filter, and drop this one in. The quality feels solid with a sturdy frame and well-made filter material. It’s not flimsy at all, and you can tell it’s built to last. After swapping it in, I noticed the engine felt a bit smoother, and there was a slight improvement in responsiveness, especially during acceleration. I’m also hoping it helps with fuel efficiency over time. Honestly, for the price and convenience, this is a no-brainer. It’s a simple upgrade you can do yourself that helps protect your engine and saves you money on dealership replacements. Highly recommended if you drive a newer CR-V like mine!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 24, 2025

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