SKU: 4639118571

Catalytic Converter for 2004-2006 Audi A8 Quattro 4.2L OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter

Sale price$316.35 Regular price$351.50
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 18 - Sep 23

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Description

Catalytic Converter for 2004-2006 Audi A8 Quattro 4.2L OEM Grade Federal / EPA Compliant Direct-Fit Catalytic ConverterOverview: Keep the check engine light off with MagnaFlow OEM Grade Federal EPA Compliant Direct Fit Catalytic Converter 51966. 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 51966. 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 2004-2006 Audi A8 Quattro and interchanges with OE parts 4E0 254 551 X and 4E0 254 550 TX. Hardware is included to eliminate the hassle of working with corroded factory parts.

Note : Not For Sale in California

Interchange:

Brand  Interchange Part Number
Audi 4E0 254 550 TX
Audi 4E0 254 551 X
Audi 4E0254550TX
Audi 4E0254551X
Audi 4E0 254 550 TX
Audi 4E0 254 551 X
Audi 4E0254550TX
Audi 4E0254551X

Application:

Year Make Model Submodel Engine Size
2004 - 2006 Audi A8 Quattro 4.2L/V8

Specs:

Series OEM Grade
Subtitle Federal / EPA Compliant
Material Stainless Steel
Title OEM Grade Direct-Fit
Type Direct-Fit
Outlet Attachment Clamp-On
Inlet Attachment Bolt-On
Clamp Included Yes
Mounting Hardware Included Yes
Body Material Stainless Steel
Overall Length (In.) 83
Substrate Material Ceramic
Air Tube Adaptable No
Converter Quantity 1
Main Piping Diameter (In.) 2.5
Oxygen Sensor Location Pre and Post Converter
Finish Stainless Steel
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: 4639118571

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4.4 ★★★★★
Based on 14 reviews
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Elizabeth
Lowell, US
★★★★★ 5
Beautiful bag
Size: One Size, Color: True Black
I bought this in black leather. It's the Madewell crescent bag and it's just perfect. Great size, beautiful feel, and so roomy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 4, 2025
M
Verified Purchase
Momma Mia
Chelsea, US
★★★★★ 5
Gorgeous bag!!!
Size: One Size, Color: Aged Cognac
Don’t hesitate to buy this bag! It’s beautiful, soft and roomy without being huge. Color is also beautiful and the studs on the side give it a special look!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 11, 2025
A
Verified Purchase
Amazon Customer
Port Orchard, US
★★★★★ 5
Beautiful bag
Size: One Size, Color: Deep Indigo
Great quality. Love this bag so much!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 27, 2026
A
Verified Purchase
Amazon Customer
Boise, US
★★★★★ 1
Pity, because I loved the color, but not on my white jeans
Size: One Size, Color: Soft Mahogany, Size: One Size, Color: Soft Mahogany
Color rubbed off onto my clothing
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Reviewed in the United States on March 10, 2026
J
Verified Purchase
Jennifer Rogers
Massapequa, US
★★★★★ 3
It’s Okay!
Size: One Size, Color: Soft Mahogany
Everything was just okay about this bag. I expected more of a high quality and gorgeous suede and it really looked like I could have gotten it at target. It did not lay quite right as a crossbody for me so I returned it. The color is very pretty and it is made very well.
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Reviewed in the United States on November 25, 2025

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