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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Ships within 48 hours · Estimated delivery Jul 19 - Jul 24

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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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P. SHAVER
Waukegan, US
★★★★★ 5
Great moisturizer
Size: 8 Ounce (Pack of 1)
This is the most pleasant and effective moisturizer I’ve tried. It’s very smooth and creamy, and it soaks in quickly. Ends dry, itchy skin on my legs damaged by daily golfing in shorts.
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Reviewed in the United States on April 6, 2026
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Jennifer Cifre Faure
San Leandro, US
★★★★★ 5
I love this product
Size: 8 Ounce (Pack of 1)
Since I started using this Dove Pro-Retinol + Firming cream, I honestly noticed a difference in my skin. I love that it’s not heavy or greasy—it absorbs quickly and leaves my skin feeling super soft from the very first application. I like to apply it every night and it leaves my skin well hydrated all night it doesn't matter the rose is very effective it also works for your skin marks like pink scars with contamcy you notice the difference in your skin
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Reviewed in the United States on May 31, 2026
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Meg
Lake Worth, US
★★★★★ 4
Great product!
Size: 8 Ounce (Pack of 1)
This is a great product. I can definitely feel my skin getting more plump and hydrated. There is no scent, which I like. I was pleasantly surprised at the size of the bottle. It was much bigger than I expected. I will definitely be purchasing again.
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Reviewed in the United States on January 20, 2026
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Linda Bryan
Draper, US
★★★★★ 5
Soft younger looking skin at a reasonable price.
Size: 8 Ounce (Pack of 1)
Absolutely love this product! It smells good and absorbs into the skin immediately. I can tell a difference in how my skin looks and feels as soon as I apply it.
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Reviewed in the United States on April 2, 2026
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Laurie A. Dumond
Los Angeles, US
★★★★★ 5
Feels like a luxury product
Size: 8 Ounce (Pack of 1)
the consistency and lasting hydration of this product is fantastic! I use it year-round because it is very moisturizing, but it is especially great in the summer when I don't want something heavy or greasy on my skin. The scent is a little perfumey, but it is subtle and I actually think it is very pleasant and not overpowering
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Reviewed in the United States on March 23, 2026

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