SKU: 3984084406

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 Sep 17 - Sep 22

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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: 3984084406

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Dianela Marti Consuegra
Louisville, US
★★★★★ 5
Thicker & Healthier Hair
Scent: Bright Coffee, Size: 4.06 Fl Oz (Pack of 1)
I’ve been using this Batana oil for a few weeks and I can already see a difference in my hair. My hair feels softer, thicker, and looks much healthier. The scalp oil keeps my scalp moisturized without feeling too greasy, and the natural formula gives me confidence that I’m using a quality product. I also noticed less hair shedding and better shine after regular use. The scent is natural and the mask is easy to apply. Great for both men and women who want stronger, fuller-looking hair.
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Reviewed in the United States on May 27, 2026
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Idayme Estrada
Port Orchard, US
★★★★★ 5
Great Batana Oil for Soft and Healthy Hair”
Scent: Bright Coffee, Size: 4.06 Fl Oz (Pack of 1)
“I’ve been using this Batana Oil for a few weeks and I really like it so far. My hair feels softer, healthier, and looks shinier after every use. I also noticed less dryness and breakage. The smell is strong but not bad, and a little product goes a long way. It makes my hair feel thicker and more manageable. Definitely worth trying if you want healthier hair!”
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Reviewed in the United States on May 23, 2026
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ODELKIS
Bozeman, US
★★★★★ 5
To strengthen and add shine.
Scent: Bright Coffee, Size: 4.06 Fl Oz (Pack of 1)
Absolutely love this Batana Oil! My hair feels softer, thicker, and much healthier after just a few uses. It helps with dryness and gives my hair a natural shine without feeling greasy. The scent is nice and the jar lasts a long time because a little goes a long way. Highly recommend for anyone looking to improve hair growth and overall hair health!
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Reviewed in the United States on May 18, 2026
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Any
Lake Worth, US
★★★★★ 5
High quality
Scent: Bright Coffee, Size: 4.06 Fl Oz (Pack of 1)
I’ve been very happy with this Batana Oil. It feels like a high-quality, 100% raw and natural product. Since adding it to my hair care routine, my hair has felt softer, more moisturized, and healthier overall. I’ve also noticed less breakage and improved manageability.
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Reviewed in the United States on June 2, 2026
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Rosmery torres
Fort Morgan, US
★★★★★ 5
Batana Oil for Stronger, Fuller Hair
Scent: Bright Coffee, Size: 4.06 Fl Oz (Pack of 1)
I’ve been using this Batana Oil for a few weeks now, and I’m genuinely impressed with the results. From the very first use, my hair felt softer, more nourished, and noticeably healthier. The texture of the oil is rich but not overly heavy, which makes it easy to apply without weighing my hair down. What I love most is how it helps with dryness and frizz. My ends look less damaged, and my hair has a natural shine that I didn’t have before. I’ve also noticed less breakage when brushing, which is a huge plus. It feels like my hair is getting stronger over time. Another great thing is that a little goes a long way, so the jar lasts longer than expected. I like to use it as a scalp treatment and also as a leave-in on my ends, and it works perfectly both ways. If you’re looking for something to improve the overall health, thickness, and appearance of your hair, this Batana Oil is definitely worth trying. It gives that “salon-quality” feel right at home.
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Reviewed in the United States on April 28, 2026

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