SKU: 18425700113

Catalytic Converter for 2001-2003 Audi S8 4.2L OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter MagnaFlo

Sale price$225.90 Regular price$251.00
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Ships within 48 hours · Estimated delivery Jul 20 - Jul 25

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Description

Catalytic Converter for 2001-2003 Audi S8 4.2L OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter MagnaFloOverview: Keep the check engine light off with MagnaFlow OEM Grade Federal EPA Compliant Direct Fit Catalytic Converter 51086. 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 51086. 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 2001-2003 Audi S8 and interchanges with OE parts 4D0 131 090 RX and 4D0 254 350 BX. 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 4D0 131 090 RX
Audi 4D0 254 350 BX
Audi 4D0131090RX
Audi 4D0254350BX
Audi 4D0 131 090 RX
Audi 4D0 254 350 BX
Audi 4D0131090RX
Audi 4D0254350BX

Application:

Year Make Model Submodel Engine Size
2001 - 2003 Audi S8 4.2L/V8

Specs:

Body Material Stainless Steel
Substrate Material Ceramic
Air Tube Adaptable No
Converter Quantity 1
Finish Stainless Steel
Inlet Attachment Bolt-On
Material Stainless Steel
Series OEM Grade
Subtitle Federal / EPA Compliant
Title OEM Grade Direct-Fit
Type Direct-Fit
Mounting Hardware Included Yes
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: 18425700113

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4.8 ★★★★★
Based on 13 reviews
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Product Reviews
C
Verified Purchase
Coldax
New York, US
★★★★★ 5
2021 Volvo XC 40 T5R
Works perfectly. Be sure to tighten down with the proper torque!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 14, 2025
H
Verified Purchase
HEIDI
Natrona Heights, US
★★★★★ 5
Fits Volvo xc90
Fits my Volvo xc90 2020
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 24, 2025
D
Verified Purchase
Destiny Voisine
Charlottesville, US
★★★★★ 5
It fit
BMW X1 2015. No problems at all. You won’t need any other cup unless you have more style euros.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 14, 2025
B
Verified Purchase
Brian Classen
Omaha, US
★★★★★ 5
FRIENDLY REMINDER Don't overtighten the bolts
MUCH better than the cheap plastic OEM part, Just a reminder though, these thread into an aluminum block so be very careful to start them finger tight first, then evenly tighten both bolts to push the fitting into the chamber. If you don't, it will slightly misalign and you run the risk of stripping the threads. The one comes with the replacement o ring, and be sure to get some antifreeze on that seal prior to attempting to push it into the chamber. IT IS A TIGHT FIT, but that's what you want, so just be careful. You might also want an extra hose clamp on hand, as the one that came with this began to bend as it got tight, so I had to replace it for peace of mind. Overall, great product though.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 9, 2026
D
Verified Purchase
Dklnyc
Omaha, US
★★★★★ 5
Strong product
Great quality
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 11, 2026

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