2003 GMC Sierra 2500 Catalytic Converters
Enhance and Protect Your 2003 GMC Sierra 2500 with Quality Catalytic Converters
Maintaining the performance of your 2003 GMC Sierra 2500 starts with choosing the right parts, and a high-quality Catalytic Converters helps ensure a reliable and efficient vehicle. At Advance Auto Parts, we offer Catalytic Converters specifically for the 2003 GMC Sierra 2500, ensuring a perfect fit and lasting durability. Choosing to shop with Advance Auto Parts means you’re making a smart decision to prioritize both quality and reliability for your vehicle.
Affordable and Reliable Catalytic Converters for Every Budget
Finding a Catalytic Converters that combines quality with affordability is easy at Advance Auto Parts. With prices starting as low as $390.99 and an average price of $594.19, you can choose one that fits your budget while delivering the quality you expect. Our Catalytic Converters are competitively priced, ranging from $390.99 to $849.99, so you get value without compromising on strength or reliability.
Trusted Brands and Top-Rated Options
With 5 Catalytic Converters from 2 trusted brands in stock, Advance Auto Parts has you covered. Popular options include CalCat CARB Universal Catalytic Converter 3" Inlet (ID) 3" Outlet (ID)s, CalCat CARB Universal Catalytic Converter 3" Inlet (ID) 3" Outlet (ID)s, and Ultra EPA Direct Fit Catalytic Converter 3" Outlet (OD)s, starting at $485.99. Our selection includes highly regarded brands such as Walker and MAGNAFLOW, and more, offering you top-notch reliability. For example, we have 3 Walker Catalytic Converters starting at $485.99 with an average rating of 4 stars, 2 MAGNAFLOW options from $390.99 with a 4 stars rating.
Explore Related Parts for a Complete Solution
To further enhance your 2003 GMC Sierra 2500, don’t miss our related parts categories, including Catalytic Converter Gaskets. These additions will round out your repair or upgrade project and ensure your vehicle is ready for any adventure.
Catalytic Converters for Your 2003 GMC Sierra 2500
MagnaFlow – California Grade CARB Compliant Universal Catalytic Converter (Part No.447209)
from
$390.99
MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 447209 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:
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Product Features:
- Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off.
- Compact, lightweight construction enables installation in confined areas, welding is required.
- Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last.
Walker – CalCat CARB Universal Catalytic Converter 3" Inlet (ID) 3" Outlet (ID) (Part No.81724)
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:
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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 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
Walker – CalCat CARB Universal Catalytic Converter 3" Inlet (ID) 3" Outlet (ID) (Part No.83404)
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:
See More
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
Walker – Ultra EPA Direct Fit Catalytic Converter 3" Outlet (OD) (Part No.55557)
from
$719.99
Designed to comply with EPA standards while delivering premium performance with assured compliance, Walker Ultra Direct-Fit Catalytic Converters provide premium performance and are available for import and domestic OBDII (1996 and newer) vehicles.
Product Features:
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Product Features:
- EPA COMPLIANT — For use on OBDII vehicles, 1996 and newer. Not legal for sale or use in CA, CO & NY. Legal in ME on EPA Federal Emission Equipped Vehicles only. Consult your state’s aftermarket converter regulations for details.
- 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 and/or welding
- KEEPS CHECK ENGINE LIGHT OFF FOR EMISSIONS CODES — OE-style high-technology washcoat and optimal precious metal load delivers required reduction in tailpipe emissions to match vehicle application
- STRONG AND DURABLE — Features thick OE-style flanges, hangers and brackets for strength and durability
- OE-STYLE DESIGN — Features aluminized heat shields when originally equipped, to match OE design, protecting the undercarriage from heat created by the converter
MagnaFlow – California Grade CARB Compliant Universal Catalytic Converter (Part No.447109)
from
$523.99
MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 447109 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:
See More
Product Features:
- Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off.
- Compact, lightweight construction enables installation in confined areas, welding is required.
- Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last.
FAQs for 2003 GMC Sierra 2500 Catalytic Converters
Which Catalytic Converters are the top sellers for the 2003 GMC Sierra 2500?
Out of 5 Catalytic Converters that fit 2003 GMC Sierra 2500s, the following parts are the top sellers:
from
$849.99
This product is not rated
CalCat CARB Universal Catalytic Converter 3" Inlet (ID) 3" Outlet (ID)
Catalytic Converters
from
$485.99
This product is not rated
CalCat CARB Universal Catalytic Converter 3" Inlet (ID) 3" Outlet (ID)
Catalytic Converters
from
$719.99
This product is not rated
Ultra EPA Direct Fit Catalytic Converter 3" Outlet (OD)
Catalytic Converters
How can I make sure that a part will be compatible with my 2003 GMC Sierra 2500?
Our GMC Sierra 2500 aftermarket and OEM parts are designed specifically for the 2003 model. You can always find your specific fitment and compatibility for your 2003 GMC on an individual product page.
What is the price range for 2003 GMC Sierra 2500 Catalytic Converters?
The range of prices of Catalytic Converters for the 2003 GMC Sierra 2500 goes from $390.99 up to $849.99 for the most premium parts.
What is the average price of 2003 GMC Sierra 2500 Catalytic Converters?
Does Advance Auto Parts sell Catalytic Converters for other GMC Sierra 2500 model years?
Can I get help with 2003 GMC Sierra 2500 Catalytic Converters 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 Sierra 2500 Catalytic Converters?
Advance Auto Parts keeps returns simple. For new GMC Sierra 2500 Catalytic Converters and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.
Catalytic Converters For Other GMC Sierra 2500 Model Years
Looking for parts for a different model year of the GMC Sierra 2500? Below, you’ll find links to Catalytic Converters for a range of model years, from 1999 models all the way up to 2004. At Advance Auto Parts, we carry high-quality OEM and aftermarket auto parts for popular years like 1999, 2002, 2004, and more, ensuring you have access to the best options for your specific needs. Choosing a Catalytic Converters from Advance Auto Parts means investing in top-tier parts that will keep your GMC Sierra 2500 running at its best, no matter the year.
