2018 Audi S3 Catalytic Converters

Keep Your 2018 Audi S3 in Top Shape with a Quality Catalytic Converter

When it comes to maintaining or upgrading your 2018 Audi S3, choosing high-quality parts is crucial for ensuring your vehicle stays in top shape, whether you’re tackling a repair or enhancing performance. At Advance Auto Parts, we know how important it is to find the right Catalytic Converter for your S3. We currently carry a top Catalytic Converter in stock that is built to last. Whether you’re replacing a damaged Catalytic Converter or looking to upgrade, our selection for the 2018 Audi S3 ensures you’ll find exactly what you need to keep your vehicle looking and performing its best.

Explore Related Parts

And while you’re here, don’t forget to check out related part categories like Exhaust Fittings and Exhaust Hangers to complete your upgrade or repair project. At Advance Auto Parts, we’re proud to offer the parts and expertise to keep your 2018 Audi S3 running smoothly and looking great.

Most Popular Catalytic Converter for 2018 Audi S3s

Enhance your 2018 Audi S3 with this popular Catalytic Converter we have in stock, for $206.99.

Walker – CalCat CARB Universal Catalytic Converter 2.25" Inlet (ID) 2.25" Outlet (ID) (Part No.84205)

CalCat CARB Universal Catalytic Converter 2.25" Inlet (ID) 2.25" Outlet (ID)

from

$206.99
Designed, tested and validated for assured compliance to meet CARB standards, Walker CalCat Universal Catalytic Converters are available for OBDII (1996 and newer) and non-OBD (1995 and older) vehicles.

Product Features:
  • CARB COMPLIANT — For use on OBDII vehicles, 1996 and newer and non-OBD 1995 and older. Legal for sale in CA, CO, NY & other states requiring CARB-compliant replacement converters. Consult your state¿s aftermarket converter regulations.
  • CARB COMPLIANT — For use on OBDII vehicles, 1996 and newer and non-OBD 1995 and older. Legal for sale in CA, CO, NY & other states requiring CARB-compliant replacement converters. Consult your state┐s aftermarket converter regulations.
  • SUPERIOR TECHNOLOGY — Optimal high technology washcoat formulated to deliver superior performance (as compared to EPA-compliant converters)
  • CONSISTENT PERFORMANCE — Utilizes a precise OE-style coating process to apply catalyst material to the substrate, providing consistent performance for assured emissions compliance
  • DURABLE — Features stainless-steel body with aluminized pipe and heat shields for durability
  • FLEXIBLE SOLUTION — Customizable design features expandable bushings for easy fitment and may require specialized fabrication and/or welding for installation
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FAQs for 2018 Audi S3 Catalytic Converters

What’s the price range for 2018 Audi S3 Catalytic Converters?

We currently have just one Catalytic Converters for the 2018 Audi S3 in stock: CalCat CARB Universal Catalytic Converter 2.25" Inlet (ID) 2.25" Outlet (ID) and it costs $206.99.

Does Advance Auto Parts sell Catalytic Converters for other Audi S3 model years?

Yes, we carry Catalytic Converters for 2 model years of Audi S3s between 2015 and 2017. The following model years are the most popular for Catalytic Converter purchases: 2017, 2016, and 2015.

Does Advance Auto Parts sell Catalytic Converters for any other 2018 Audi models?

Yes. We stock Catalytic Converters for 9 other popular 2018 Audi models. Some of the most popular are 2018 S6 Catalytic Converters, 2018 A8 Quattro Catalytic Converters, 2018 S7 Catalytic Converters, 2018 RS7 Catalytic Converters, and 2018 S8 Catalytic Converters.

What types of Catalytic Converters do you sell for my 2018 Audi S3?

We currently have just 1 Catalytic Converter in stock for a 2018 Audi S3, and as of 11/2/25, it is a Catalytic Converter.

Can I get help with 2018 Audi S3 Catalytic Converter orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Audi Catalytic Converters and more.

What is your return policy for Audi S3 Catalytic Converters?

Advance Auto Parts keeps returns simple. For new Audi S3 Catalytic Converters and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.