1999 GMC C3500HD Catalytic Converters

Keep Your 1999 GMC C3500HD 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 C3500HD looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including 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 C3500HD Catalytic Converter at Advance Auto Parts is around $801.99, with a range that starts at $475.99 and goes up to $1,127.99. With 2 options in stock from one trusted brand, finding the right fit is easy. Popular picks like CalCat CARB Universal Catalytic Converter – 3" Inlet (ID) 3" Outlet (ID) and CalCat CARB Universal Catalytic Converter – 3" Inlet (ID) 3" Outlet (ID) start at just $475.99 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 C3500HD in peak condition, inside and out.

Essential 1999 GMC C3500HD Catalytic Converters

Walker – CalCat CARB Direct-Fit Catalytic Converter – 3" Inlet (ID) 3" Outlet (OD) (Part No.80942)

CalCat CARB Direct-Fit Catalytic Converter - 3" Inlet (ID) 3" Outlet (OD)

from

$1174.99
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.
  • DIRECT-FIT DESIGN: Direct-fit bolt-on replacement solution with OE-style hangers, brackets, routings and heat shields for easy installation that doesn’t require specialized fabrication or welding
  • 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
  • STRONG AND DURABLE: Features thick OE-style flanges, hangers and brackets for strength and stainless-steel body with aluminized pipe and heat shields for durability
  • BUY WITH CONFIDENCE: Backed by Walker’s 50,000-mile/80,000-kilometer emissions and structural integrity warranty
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Walker – CalCat CARB Universal Catalytic Converter – 3" Inlet (ID) 3" Outlet (ID) (Part No.81724)

CalCat CARB Universal Catalytic Converter - 3" Inlet (ID) 3" Outlet (ID)

from

$849.99
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.
  • SUPERIOR TECHNOLOGY – Optimal high technology wash coat 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 welding for installation
  • BUY WITH CONFIDENCE – Backed by Walker’s 50,000-mile/80,000-kilometer emissions and structural integrity limited warranty
See More

Walker – CalCat CARB Universal Catalytic Converter – 3" Inlet (ID) 3" Outlet (ID) (Part No.80907)

CalCat CARB Universal Catalytic Converter - 3" Inlet (ID) 3" Outlet (ID)

from

$611.99
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.
  • SUPERIOR TECHNOLOGY – Optimal high technology wash coat 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 welding for installation
  • BUY WITH CONFIDENCE – Backed by Walker’s 50,000-mile/80,000-kilometer emissions and structural integrity limited warranty
See More

Walker – CalCat CARB Universal Catalytic Converter – 3" Inlet (ID) 3" Outlet (ID) (Part No.83404)

CalCat CARB Universal Catalytic Converter - 3" Inlet (ID) 3" Outlet (ID)

from

$485.99
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.
  • SUPERIOR TECHNOLOGY – Optimal high technology wash coat 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 welding for installation
  • BUY WITH CONFIDENCE – Backed by Walker’s 50,000-mile/80,000-kilometer emissions and structural integrity limited warranty
See More

Walker – CalCat CARB Universal Catalytic Converter – 3" Inlet (ID) 3" Outlet (ID) (Part No.81919)

CalCat CARB Universal Catalytic Converter - 3" Inlet (ID) 3" Outlet (ID)

from

$1127.99
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.
  • SUPERIOR TECHNOLOGY – Optimal high technology wash coat 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 welding for installation
  • BUY WITH CONFIDENCE – Backed by Walker’s 50,000-mile/80,000-kilometer emissions and structural integrity limited warranty
See More

Walker – CalCat CARB Universal Catalytic Converter – 3" Inlet (ID) 3" Outlet (ID) (Part No.83509)

CalCat CARB Universal Catalytic Converter - 3" Inlet (ID) 3" Outlet (ID)

from

$475.99
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.
  • SUPERIOR TECHNOLOGY – Optimal high technology wash coat 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 welding for installation
  • BUY WITH CONFIDENCE – Backed by Walker’s 50,000-mile/80,000-kilometer emissions and structural integrity limited warranty
See More

Most Popular Catalytic Converters for 1999 GMC C3500HDs

Enhance your 1999 GMC C3500HD with one of the 2 Catalytic Converters we have in stock, starting at just $475.99.

Walker – CalCat CARB Universal Catalytic Converter – 3" Inlet (ID) 3" Outlet (ID) (Part No.83509)

CalCat CARB Universal Catalytic Converter - 3" Inlet (ID) 3" Outlet (ID)

from

$475.99
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.
  • SUPERIOR TECHNOLOGY – Optimal high technology wash coat 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 welding for installation
  • BUY WITH CONFIDENCE – Backed by Walker’s 50,000-mile/80,000-kilometer emissions and structural integrity limited warranty
See More

Walker – CalCat CARB Universal Catalytic Converter – 3" Inlet (ID) 3" Outlet (ID) (Part No.81919)

CalCat CARB Universal Catalytic Converter - 3" Inlet (ID) 3" Outlet (ID)

from

$1127.99
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.
  • SUPERIOR TECHNOLOGY – Optimal high technology wash coat 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 welding for installation
  • BUY WITH CONFIDENCE – Backed by Walker’s 50,000-mile/80,000-kilometer emissions and structural integrity limited warranty
See More

FAQs for 1999 GMC C3500HD Catalytic Converters

What are the best-selling Catalytic Converters for 1999 GMC C3500HDs?

Out of 2 Catalytic Converters that fit 1999 GMC C3500HDs, the following parts are the top sellers:

What’s the price range for 1999 GMC C3500HD Catalytic Converters?

The prices of Catalytic Converters for the 1999 GMC C3500HD range from $475.99 up to $1,127.99 for the most premium parts.

What is the average price of a Catalytic Converter for a 1999 GMC C3500HD?

The average price for Catalytic Converters for the 1999 GMC C3500HD is $801.99. 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 C3500HD model years?

Yes, we carry Catalytic Converters for 9 model years of GMC C3500HDs between 1991 and 2001. The following model years are the most popular for Catalytic Converter purchases: 2001, 1998, 1997, 1996, 1991, 2000, 1995, 1994, and 1992.

What are the cheapest Catalytic Converters for my 1999 GMC C3500HD?

The cheapest 1999 GMC C3500HD 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 C3500HD?

We currently have just 1 Catalytic Converter in stock for a 1999 GMC C3500HD, and as of 11/2/25, it is a Catalytic Converter.

Can I get help with 1999 GMC C3500HD 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 C3500HD Catalytic Converters?

Advance Auto Parts keeps returns simple. For new GMC C3500HD Catalytic Converters and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.