Catalytic Converter for 2004-2006 Audi A8 Quattro 4.2L OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter
SKU: 53740600293

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 Jul 8 - Jul 13

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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: 53740600293

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4.8 ★★★★★
Based on 2165 reviews
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Product Reviews
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vergalina
Port Orchard, US
★★★★★ 3
Definitely not worth the money you pay.
Size: 14 Ounce (Pack of 1), Set name: Standard
The dogs love them and they are great treats. The problem is for almost $20 a bag. You only get a fourth of the bag hole sweet potato strips. The rest of it is just the scraps from the skin. These get stuck in my dog’s gums and then their teeth and they’re hard to digest. I stopped buying them and went to another brand, unfortunately. I thought maybe it’s a fluke and the back got shook up, but I’ve ordered at least eight bags.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 8, 2026
L
Verified Purchase
Lady29
Port Orchard, US
★★★★★ 5
Dog enjoying them
Size: 8 Ounce (Pack of 1), Set name: Standard
Dog really liked them. Little softer than other brands. No crunch
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 24, 2026
J
Verified Purchase
Joys Review
New York, US
★★★★★ 1
Hard and leathery gray in color!
Size: 8 Ounce (Pack of 1), Set name: Standard
These treats were like a horrible texture they were chewy but hard the dog had a problem eating them took her forever to chew one little piece disappointed and they were like a odd color grayish seem like an old bag very disappointing
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2023
M
Verified Purchase
mE, yoU & TiTuS (♥️PluTo)
Birmingham, US
★★★★★ 4
First shipment was quality
Size: 8 Ounce (Pack of 1), Set name: Standard
Initial delivery was impressive. No odor no additives and longer pieces. Second bag was full of short, burned pieces. Expense would be worth it, if quality control existed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 19, 2024
L
Verified Purchase
lisa s
Belleville, US
★★★★★ 5
Great dog treats
Size: 8 Ounce (Pack of 1), Set name: Standard
Great treats. My lab loves these
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 10, 2025

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