2003 Chevrolet Corvette Catalytic Converters

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Keep Your 2003 Chevrolet Corvette 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 2003 Chevrolet Corvette looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Catalytic Converters and Catalytic Converter Gaskets. 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.

Top-Rated Catalytic Converters from Trusted Brands

Looking for a reliable Catalytic Converter? We’ve got you covered with options from brands you know and trust like Walker. For example, Walker Catalytic Converters start at just $5.49 with an average 4.2 star rating. With over 30 reviews and a solid 4.5 star average, you can shop with confidence knowing other Chevrolet Corvette owners approve.

Competitive Prices and Extensive Inventory

The average price for a 2003 Chevrolet Corvette Catalytic Converter at Advance Auto Parts is around $412.92, with a range that starts at $5.49 and goes up to $1,132.00. With 7 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51206, MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99206HM, and MagnaFlow Oem Grade Federal / Epa Compliant Semi-Direct Fit Catalytic Converter, 51460 start at just $196.99 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 Manifold and Headers and Exhaust System Kits. At Advance Auto Parts, we’re here to help you keep your 2003 Chevrolet Corvette in peak condition, inside and out.

Essential 2003 Chevrolet Corvette Catalytic Converters

MagnaFlow – MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 3322019 (Part No.3322019)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 3322019

from

$757.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 3322019. The Universal design allows the part to fit a wide array of vehicles, and the stainless steel construction of this catalytic converter is highly resistant to corrosion. 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 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.
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Walker – "Walker CalCat CARB Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 84508" (Part No.84508)

"Walker CalCat CARB Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 84508"

from

$1558.00
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. Walker CalCat catalytic converters are thoroughly tested to ensure they meet CARB performance requirements.
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MagnaFlow – MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 5421206 (Part No.5421206)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 5421206

from

$367.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 5421206. The Universal design allows the part to fit a wide array of vehicles, and the stainless steel construction of this catalytic converter is highly resistant to corrosion. 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 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.
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MagnaFlow – MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 4561733 (Part No.4561733)

MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 4561733

from

$1604.00
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 4561733. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this 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 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 2005-2006 Chevrolet Corvette 6.0L. MagnaFlow 4561733 includes (1) Donut Gasket. 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.
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MagnaFlow – MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 338016 (Part No.338016)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 338016

from

$319.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 338016. The Universal design allows the part to fit a wide array of vehicles, and the stainless steel construction of this catalytic converter is highly resistant to corrosion. 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 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.
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Walker – "Walker Ultra EPA Universal Catalytic Converter – 2.5"" Inlet (ID) 2.5"" Outlet (ID), 93238" (Part No.93238)

"Walker Ultra EPA Universal Catalytic Converter - 2.5"" Inlet (ID) 2.5"" Outlet (ID), 93238"

from

$244.99
Designed to comply with EPA emissions requirements while delivering premium performance and durability with assured compliance, Walker Ultra Universal Catalytic Converters are available for import and domestic OBDII (1996 and newer) vehicles.
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MagnaFlow – MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 408006 (Part No.408006)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 408006

from

$304.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 408006. The Universal design allows the part to fit a wide array of vehicles, and the stainless steel construction of this catalytic converter is highly resistant to corrosion. 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 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.
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MagnaFlow – MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 4481988 (Part No.4481988)

MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 4481988

from

$2675.00
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 4481988. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this 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 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 1997-1999 Chevrolet Corvette 5.7L. MagnaFlow 4481988 includes (2) Donut Gaskets. 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.
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MagnaFlow – MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 53006 (Part No.53006)

MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 53006

from

$106.99
Keep the check engine light off with MagnaFlow Standard Grade Federal/EPA Compliant Universal Catalytic Converter 53006. Get the right fit for a wide array of vehicles thanks to the adaptable Universal design. 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.
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Walker – "Walker Standard EPA Universal Catalytic Converter 2.25"" Inlet (ID) 2.25"" Outlet (ID), 15037" (Part No.15037)

"Walker Standard EPA Universal Catalytic Converter 2.25"" Inlet (ID) 2.25"" Outlet (ID), 15037"

from

$122.99
Designed to provide the required reduction in tailpipe emissions and meet EPA emissions requirements with assured compliance, Walker universal catalytic converters are available for pre-OBDII (1995 and older) vehicles. Count on Walker�catalytic�converters�for�industry-leading fit and performance.
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MagnaFlow – MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 52037 (Part No.52037)

MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 52037

from

$1180.00
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 52037. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this 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 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 2006-2011 Chevrolet Corvette 7.0L & 2009-2011 Chevrolet Corvette ZR1 6.2L. MagnaFlow 52037 includes (2) Nuts, (2) Bolts, (2) Split Lock Washers. 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 California or Federal/EPA Emission systems.
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MagnaFlow – MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 3322306 (Part No.3322306)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 3322306

from

$611.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 3322306. The Universal design allows the part to fit a wide array of vehicles, and the stainless steel construction of this catalytic converter is highly resistant to corrosion. 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 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.
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MagnaFlow – MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99206HM (Part No.99206HM)

MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99206HM

from

$196.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter 99206HM. The Universal design allows the part to fit a wide array of vehicles, and the stainless steel construction of this catalytic converter is highly resistant to corrosion. 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 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.
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MagnaFlow – MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 49733 (Part No.49733)

MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 49733

from

$568.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 49733. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this 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 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 2005-2007 Chevrolet Corvette 6.0L & 2008-2011 Chevrolet Corvette 6.2L. MagnaFlow 49733 includes (1) Donut Gasket. 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 California or Federal/EPA Emission systems.
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Walker – Walker Exhaust Pipe Flange Gasket, 31537 (Part No.31537)

Walker Exhaust Pipe Flange Gasket, 31537

from

$5.49
Complete your exhaust repair with Walker gaskets and flanges. Built from quality materials for long lasting durability, they’re available in a range of styles and sizes. Each component is designed to work seamlessly with OE exhaust systems and Walker aftermarket replacement parts.
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Most Popular Catalytic Converters for 2003 Chevrolet Corvettes

Enhance your 2003 Chevrolet Corvette with one of the 6 Catalytic Converters we have in stock, starting at just $196.99.

Walker – "Walker Ultra EPA Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 93253" (Part No.93253)

"Walker Ultra EPA Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 93253"

from

$365.99
Designed to meet EPA emissions requirements while delivering premium performance and durability, Walker Ultra universal catalytic converters fit import and domestic OBDII (1996 and newer) vehicles. Each converter features an OE style high technology washcoat with an optimal precious metal load for assured compliance.
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MagnaFlow – MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51206 (Part No.51206)

MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51206

from

$213.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51206. The Universal design allows the part to fit a wide array of vehicles, and the stainless steel construction of this catalytic converter is highly resistant to corrosion. The single laser fusion welds greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. 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.
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MagnaFlow – MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99206HM (Part No.99206HM)

MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99206HM

from

$196.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter 99206HM. The Universal design allows the part to fit a wide array of vehicles, and the stainless steel construction of this catalytic converter is highly resistant to corrosion. 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 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.
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MagnaFlow – MagnaFlow Oem Grade Federal / Epa Compliant Semi-Direct Fit Catalytic Converter, 51460 (Part No.51460)

MagnaFlow Oem Grade Federal / Epa Compliant Semi-Direct Fit Catalytic Converter, 51460

from

$1132.00
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Semi-Direct-Fit Catalytic Converter 51460. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this converter yourself using the proper tools, no 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 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 2000-2004 Chevrolet Corvette 5.7L. MagnaFlow 51460 includes (2) Donut Gaskets. 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 California or Federal/EPA Emission systems.
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MagnaFlow – MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 441205 (Part No.441205)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 441205

from

$562.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 441205. The Universal design allows the part to fit a wide array of vehicles, and the stainless steel construction of this catalytic converter is highly resistant to corrosion. 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 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.
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MagnaFlow – MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 444205 (Part No.444205)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 444205

from

$412.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 444205. The Universal design allows the part to fit a wide array of vehicles, and the stainless steel construction of this catalytic converter is highly resistant to corrosion. 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 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.
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Best-Selling 2003 Chevrolet Corvette Catalytic Converter Gasket

Upgrade your Corvette with our best-selling Catalytic Converter Gasket with a 5 Starts rating across 3 reviews.

Walker – Walker Exhaust Pipe Flange Gasket, 31537 (Part No.31537)

Walker Exhaust Pipe Flange Gasket, 31537

from

$5.49
Complete your exhaust repair with Walker gaskets and flanges. Built from quality materials for long lasting durability, they’re available in a range of styles and sizes. Each component is designed to work seamlessly with OE exhaust systems and Walker aftermarket replacement parts.
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Top-Rated Catalytic Converter Brands For Your 2003 Chevrolet Corvette

When it comes to finding the perfect Catalytic Converter for your 2003 Chevrolet Corvette, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 2 trusted brands. We carry the most popular Catalytic Converter brands including Walker, and more, all known for their exceptional customer ratings (average brand rating of 4.2 stars) and competitive prices, as low as $5.49. Purchasing a Catalytic Converter from us here at Advance Auto Parts is a smart move for both you and your 2003 Chevrolet Corvette, providing peace of mind with parts that meet or exceed OEM standards.

Popular Walker 2003 Chevrolet Corvette Catalytic Converters

If you’re looking for a top-quality Catalytic Converter for your 2003 Chevrolet Corvette, Advance Auto Parts has exactly what you need with our selection of Walker Catalytic Converters. We have 2 Walker Catalytic Converters in stock for this fitment, all known for their durability and precision fit. With prices starting at just $5.49 and an average cost of $185.74, you’ll find the perfect Catalytic Converter for your needs and budget. Walker Catalytic Converters for the 2003 Chevrolet Corvette come highly rated, with over 15 customer reviews and an impressive average rating of 4.2 stars. Choosing a Walker Catalytic Converter from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Walker Exhaust Pipe Flange Gasket, 31537
from $5.49
(3)
Walker Exhaust Pipe Flange Gasket, 31537
“Does not leak good buy”
"Walker Ultra EPA Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 93253"
from $365.99
(12)
"Walker Ultra EPA Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 93253"
“Good product but very little room for error when cutting off old catalytic converter and matching up to new.”

FAQs for 2003 Chevrolet Corvette Catalytic Converters

What are the best-selling Catalytic Converters for 2003 Chevrolet Corvettes?

Out of 7 Catalytic Converters that fit 2003 Chevrolet Corvettes, the following parts are the top sellers:

What’s the price range for 2003 Chevrolet Corvette Catalytic Converters?

The prices of Catalytic Converters for the 2003 Chevrolet Corvette range from $5.49 up to $1,132.00 for the most premium parts.

What is the average price of a Catalytic Converter for a 2003 Chevrolet Corvette?

The average price for Catalytic Converters for the 2003 Chevrolet Corvette is $412.92. 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 Chevrolet Corvette model years?

Yes, we carry Catalytic Converters for 41 model years of Chevrolet Corvettes between 1975 and 2019. The following model years are the most popular for Catalytic Converter purchases: 2019, 2018, 2017, 2016, 2015, 2013, 2012, 2011, and 2010.

What are the cheapest Catalytic Converters for my 2003 Chevrolet Corvette?

Does Advance Auto Parts sell Catalytic Converters for any other 2003 Chevrolet models?

Yes. We stock Catalytic Converters for 24 other popular 2003 Chevrolet models. Some of the most popular are 2003 Tahoe Catalytic Converters, 2003 Impala Catalytic Converters, 2003 Silverado 1500 Catalytic Converters, 2003 Malibu Catalytic Converters, and 2003 Suburban 1500 Catalytic Converters.

What are the top-rated Catalytic Converters that fit the 2003 Chevrolet Corvette?

Based on 30 reviews by customers, our 2003 Chevrolet Corvette Catalytic Converters have an average customer rating of 4.5 stars. These are the highest-rated categories of Catalytic Converters for the 2003 Chevrolet Corvette and their top-rated products:

What types of Catalytic Converters do you sell for my 2003 Chevrolet Corvette?

As of 8/2/26, these are some of the most in-demand types of Catalytic Converters for a 2003 Chevrolet Corvette:

Can I get help with 2003 Chevrolet Corvette Catalytic Converter orders?

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

What is your return policy for Chevrolet Corvette Catalytic Converters?

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