1999 GMC P3500 Catalytic Converters

Keep Your 1999 GMC P3500 in Top Shape with Quality Catalytic Converters

Whether you’re repairing or upgrading your Catalytic Converter, using high-quality parts is key to keeping your 1999 GMC P3500 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Catalytic Converter Gaskets and Catalytic Converters. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Competitive Prices and Extensive Inventory

The average price for a 1999 GMC P3500 Catalytic Converter at Advance Auto Parts is around $281.49, with a range that starts at $7.99 and goes up to $554.99. With 2 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like California Universal Catalytic Converter – 3.00" and Catalytic Converter Gasket start at just $7.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Catalytic Converter, don’t forget to check out other key components like Exhaust Fittings and Exhaust Manifold and Headers. At Advance Auto Parts, we’re here to help you keep your 1999 GMC P3500 in peak condition, inside and out.

Essential 1999 GMC P3500 Catalytic Converters

MagnaFlow – Standard Grade Universal Catalytic Converter – 3.00" (Part No.94009)

Standard Grade Universal Catalytic Converter - 3.00"

from

$119.99
MagnaFlow Standard Grade Federal/EPA Compliant Universal Catalytic Converter 94009 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 Federal emissions requirements set forth by the EPA, complying with legal standards for pre-OBDII Federally registered vehicles.

Product Features:
  • Your trusted source for EPA-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 – HM Grade Universal Catalytic Converter – 3.00" (Part No.99509HM)

HM Grade Universal Catalytic Converter - 3.00"

from

$396.99
MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter 99509HM 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 Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with Federal/EPA Emission systems.

Product Features:
  • Your trusted source for EPA-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 – 3.00" (Part No.445009)

California Universal Catalytic Converter - 3.00"

from

$554.99
MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 445009 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 – 3.00" (Part No.333009)

California Universal Catalytic Converter - 3.00"

from

$338.99
MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 333009 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 – Standard Grade Universal Catalytic Converter – 3.00" (Part No.95509)

Standard Grade Universal Catalytic Converter - 3.00"

from

$261.99
MagnaFlow Standard Grade Federal/EPA Compliant Universal Catalytic Converter 95509 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 Federal emissions requirements set forth by the EPA, complying with legal standards for pre-OBDII Federally registered vehicles.

Product Features:
  • Your trusted source for EPA-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 – Direct-Fit Standard Grade Catalytic Converter (Part No.93476)

Direct-Fit Standard Grade Catalytic Converter

from

$272.99
MagnaFlow Standard Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 93476 helps keep the check engine light off. DIY installation is easy with the proper tools, no cutting or welding required. With features including mandrel-bent tubing to eliminate flow restrictions and stainless steel construction to resist corrosion, you can have confidence in the quality of this catalytic converter. Using state-of-the-art 3D scanning systems in the design process, the MagnaFlow metrology department ensures this new part to fit and function like the original equipment. This direct-fit catalytic converter is designed to fit the 1988-1993 Chevrolet C1500, 1988-1993 Chevrolet K1500, and additional vehicles. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for pre-OBDII Federally registered vehicles.

Product Features:
  • Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
  • High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
  • Simplifies installation with essential gaskets and hardware being included in the box
  • Durable 308 stainless steel MIG welds
See More

MagnaFlow – Catalytic Converter (Part No.3391477)

Catalytic Converter

from

$914.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 3391477. 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 to fit the 1990-1995 Chevrolet K2500, 1988-1995 Chevrolet C3500, and additional vehicles. 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
  • High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
  • Simplifies installation with essential gaskets and hardware being included in the box
  • Durable 308 stainless steel MIG welds
See More

Walker – Exhaust Pipe Flange Gasket (Part No.31416)

Exhaust Pipe Flange Gasket

from

$6.19
Complete your exhaust repair with Walker gaskets and flanges. Available in a variety of styles and sizes, they’re designed to work with OE exhaust components and Walker aftermarket replacement parts.

Product Features:
  • AVAILABLE IN DIFFERENT SIZES : Offered in a variety of styles and sizes for a quality vehicle repair
  • HEAT RESISTANT : Designed to resist heat for long-lasting performance
  • PREMIUM MATERIALS : Made from high-quality materials for durability and long life
  • ENGINEERING EXPERTISE : Parts are reviewed and validated and approved by Walker engineers through rigorous research and development
  • REAL-WORLD TESTED : Parts are tested on-vehicle and validated to ensure optimal performance on the road
  • EASIER TO INSTALL : Featuring slotted bolt holes (where applicable) for easy installation, gasket slips into place
  • BETTER TOGETHER : Use premium Walker accessories when installing Walker catalytic converters and mufflers for a complete exhaust system upgrade
See More

Victor Reinz – Catalytic Converter Gasket (Part No.71-14058-00)

Catalytic Converter Gasket

from

$7.99
With Victor Reinz gaskets, you can be sure you are getting sealing solutions that deliver OE quality gasket technology and engineering. That is because Victor Reinz is an original equipment supplier and the trusted choice of manufacturers the world over, offering broad coverage for foreign and domestic cars and trucks. In Victor Reinz gasket sets, you get the right combination of components needed for fast, long-lasting repairs.

Product Features:
  • Choosing Victor Reinz assures getting OE quality parts in gaskets sets that have the coverage, contents, packaging and electronic cataloging to best meet the needs of the aftermarket.
See More

Most Popular Catalytic Converter Gasket for 1999 GMC P3500s

Enhance your 1999 GMC P3500 with this popular Catalytic Converter Gasket we have in stock, for $7.99.

Victor Reinz – Catalytic Converter Gasket (Part No.71-14058-00)

Catalytic Converter Gasket

from

$7.99
With Victor Reinz gaskets, you can be sure you are getting sealing solutions that deliver OE quality gasket technology and engineering. That is because Victor Reinz is an original equipment supplier and the trusted choice of manufacturers the world over, offering broad coverage for foreign and domestic cars and trucks. In Victor Reinz gasket sets, you get the right combination of components needed for fast, long-lasting repairs.

Product Features:
  • Choosing Victor Reinz assures getting OE quality parts in gaskets sets that have the coverage, contents, packaging and electronic cataloging to best meet the needs of the aftermarket.
See More

Best-Selling 1999 GMC P3500 Catalytic Converter

Upgrade your P3500 with our best-selling Catalytic Converter.

MagnaFlow – California Universal Catalytic Converter – 3.00" (Part No.445009)

California Universal Catalytic Converter - 3.00"

from

$554.99
MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 445009 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 GMC P3500 Catalytic Converters

What are the best-selling Catalytic Converters for 1999 GMC P3500s?

Out of 2 Catalytic Converters that fit 1999 GMC P3500s, the following parts are the top sellers:

What’s the price range for 1999 GMC P3500 Catalytic Converters?

The prices of Catalytic Converters for the 1999 GMC P3500 range from $7.99 up to $554.99 for the most premium parts.

What is the average price of a Catalytic Converter for a 1999 GMC P3500?

The average price for Catalytic Converters for the 1999 GMC P3500 is $281.49. Keep in mind the variety of part types within our Catalytic Converter category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Catalytic Converters for other GMC P3500 model years?

Yes, we carry Catalytic Converters for 14 model years of GMC P3500s between 1979 and 1998. The following model years are the most popular for Catalytic Converter purchases: 1998, 1997, 1996, 1995, 1994, 1993, 1992, 1991, and 1990.

What are the cheapest Catalytic Converters for my 1999 GMC P3500?

The cheapest 1999 GMC P3500 Catalytic Converters we carry are:

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

What types of Catalytic Converters do you sell for my 1999 GMC P3500?

As of 11/2/25, these are some of the most in-demand types of Catalytic Converters for a 1999 GMC P3500:

Can I get help with 1999 GMC P3500 Catalytic Converter orders?

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

What is your return policy for GMC P3500 Catalytic Converters?

Advance Auto Parts keeps returns simple. For new GMC P3500 Catalytic Converters and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.