1999 Lexus GS400 Catalytic Converters

Keep Your 1999 Lexus GS400 in Top Shape with a Quality Catalytic Converter

When it comes to maintaining or upgrading your 1999 Lexus GS400, 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 GS400. 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 1999 Lexus GS400 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 Pipes and Exhaust Tips to complete your upgrade or repair project. At Advance Auto Parts, we’re proud to offer the parts and expertise to keep your 1999 Lexus GS400 running smoothly and looking great.

Essential 1999 Lexus GS400 Catalytic Converters

MagnaFlow – California Grade CARB Compliant Universal Catalytic Converter (Part No.444005)

California Grade CARB Compliant Universal Catalytic Converter

from

$371.99
MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 444005 helps keep the check engine light off. Get the right fit for a wide array of vehicles thanks to the adaptable Universal design cutting and welding is required. With highly corrosion resistant, stainless steel construction, you can have confidence in the quality of this catalytic converter. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.

Product Features:
  • Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
  • Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off
  • High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
  • Compact, lightweight construction enables installation in confined areas, welding is required
  • Durable 308 stainless steel MIG welds
See More

MagnaFlow – California Universal Catalytic Converter – 2.00" (Part No.444004)

California Universal Catalytic Converter - 2.00"

from

$327.99
MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 444004 helps keep the check engine light off. Get the right fit for a wide array of vehicles thanks to the adaptable Universal design, cutting and welding is required. With highly corrosion resistant, stainless steel construction, you can have confidence in the quality of this catalytic converter. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.

Product Features:
  • Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
  • Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off
  • High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
  • Compact, lightweight construction enables installation in confined areas, welding is required
  • Durable 308 stainless steel MIG welds
See More

Most Popular Catalytic Converter for 1999 Lexus GS400s

Enhance your 1999 Lexus GS400 with this popular Catalytic Converter we have in stock, for $327.99.

MagnaFlow – California Universal Catalytic Converter – 2.00" (Part No.444004)

California Universal Catalytic Converter - 2.00"

from

$327.99
MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 444004 helps keep the check engine light off. Get the right fit for a wide array of vehicles thanks to the adaptable Universal design, cutting and welding is required. With highly corrosion resistant, stainless steel construction, you can have confidence in the quality of this catalytic converter. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.

Product Features:
  • Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
  • Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off
  • High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
  • Compact, lightweight construction enables installation in confined areas, welding is required
  • Durable 308 stainless steel MIG welds
See More

FAQs for 1999 Lexus GS400 Catalytic Converters

What’s the price range for 1999 Lexus GS400 Catalytic Converters?

We currently have just one Catalytic Converters for the 1999 Lexus GS400 in stock: California Universal Catalytic Converter – 2.00" and it costs $327.99.

Does Advance Auto Parts sell Catalytic Converters for any other 1999 Lexus models?

Yes. We stock Catalytic Converters for 6 other popular 1999 Lexus models. Some of the most popular are 1999 ES300 Catalytic Converters, 1999 GS300 Catalytic Converters, 1999 SC300 Catalytic Converters, 1999 LS400 Catalytic Converters, and 1999 RX300 Catalytic Converters.

What types of Catalytic Converters do you sell for my 1999 Lexus GS400?

We currently have just 1 Catalytic Converter in stock for a 1999 Lexus GS400, and as of 11/2/25, it is a Catalytic Converter.

Can I get help with 1999 Lexus GS400 Catalytic Converter orders?

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

What is your return policy for Lexus GS400 Catalytic Converters?

Advance Auto Parts keeps returns simple. For new Lexus GS400 Catalytic Converters and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.