Catalytic Converter for 2000-2004 Audi A6 Quattro 4.2L MagnaFlow 51664
SKU: 16102287141

Catalytic Converter for 2000-2004 Audi A6 Quattro 4.2L MagnaFlow 51664

Sale price$282.60 Regular price$314.00
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 8 - Jul 13

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Description

Catalytic Converter for 2000-2004 Audi A6 Quattro 4.2L MagnaFlow 51664Overview: Keep the check engine light off with MagnaFlow OEM Grade Federal EPA Compliant Direct Fit Catalytic Converter 51664. 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 51664. 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 2000-2004 Audi A6 Quattro and 2002-2003 Audi S6, this direct-fit catalytic converter also interchanges with OE parts 4B3 254 550 GX, 4B3 253 058 BX, among others.

Note : Not For Sale in California

Interchange:

Brand  Interchange Part Number
Audi 4B3 253 058 AX
Audi 4B3 253 058 BX
Audi 4B3 254 550 CX
Audi 4B3 254 550 GX
Audi 4B3253058AX
Audi 4B3253058BX
Audi 4B3254550CX
Audi 4B3254550GX
Audi 4B3 253 058 AX
Audi 4B3 253 058 BX
Audi 4B3 254 550 CX
Audi 4B3 254 550 GX
Audi 4B3253058AX
Audi 4B3253058BX
Audi 4B3254550CX
Audi 4B3254550GX

Application:

Year Make Model Submodel Engine Size
2000 - 2004 Audi A6 Quattro 4.2L/V8
2002 - 2003 Audi S6 4.2L/V8

Specs:

Oxygen Sensor Location Pre and Post Converter
Overall Length (In.) 51
Substrate Material Ceramic
Air Tube Adaptable No
Converter Quantity 1
Inlet Attachment Bolt-On
Material Stainless Steel
Outlet Attachment Clamp-On
Finish Stainless Steel
Series OEM Grade
Main Piping Diameter (In.) 2.25
Subtitle Federal / EPA Compliant
Title OEM Grade Direct-Fit
Type Direct-Fit
Body Material 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: 16102287141

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FL Design
New York, US
★★★★★ 5
Sleek shear soft cool zippered pillow cases
Color: 07 - Green, Size: Queen (20" X 30")
I'm a huge fan of bamboo fabric. It feels great to wear and so it also feels good to sleep on, especially during hot and or humid spells. Pillowcases came in a pack of 2 and were well packaged and arrived undamaged. Shipping was very fast. Cases appear to be well made. they are a lovely soft green which is perfect for a restful bedroom setup. As expected the fabric is soft and relaxing against the skin, it seems to retain a cooler feel than cotton.Bamboo tends to be a thinner fabric that is light and once damp, dries pretty quickly. Perfect for folks who run hot normally and need extra cooling during the summer or people who sweat at nigh. Cases are zippered and zippers worked well and appear nicely sewn in and decent quality. At night, slept very well. I think this is a good product and like the price point a lo. Will be looking to get another set very soon!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 7, 2025
T
Verified Purchase
TMarie
Louisville, US
★★★★★ 5
Best Pillowcases
Color: 08 - Beige, Size: Standard (20" X 26")
The BEST pillowcases! Soft, comfortable, not too hot. I already ordered more.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
L
Verified Purchase
Laflor13
Lexington, US
★★★★★ 5
Soft, luxurious pillowcases
Color: 03 - Navy, Size: Standard (20" X 26")
Great quality, soft, luxurious material. Love the way these zip up to keep pillow from falling out. The weight of the material is pleasant—somewhat like the bamboo material. The rich navy blue color is beautiful. Great value and very durable.
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Reviewed in the United States on April 30, 2026
B
Verified Purchase
B
Port Orchard, US
★★★★★ 4
Nice but stains show
Color: 01 - Grey, Size: Standard (20" X 26")
These are comfortable and love the zipper. That’s why I bought them. I don’t know if I try chewing my pillowcases in my sleep but I got sick of waking up with it half way out. Only complaint is that my oily skin shows pretty well on it. Only time will tell if zipper holds up. I like so far and am keeping these
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2025
T
Verified Purchase
Turtle
Pawtucket, US
★★★★★ 5
Fabulous set
Color: 09 - Light Blue, Size: Standard (20" X 26")
These are silky soft. No sweat and sleep is a dream on these. I have bought two sets now and friends have bought them to and just love them. Great quality and price! Wash and dry perfectly! Great on your skin and hair!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026

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