2003 Chevrolet Astro Catalytic Converters

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Keep Your 2003 Chevrolet Astro 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 Astro 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.

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 and MagnaFlow. For example, Walker Catalytic Converters start at just $9.99 with an average 4.2 star rating. MagnaFlow offer similar pricing and quality, backed by strong customer feedback. With over 40 reviews and a solid 3.9 star average, you can shop with confidence knowing other Chevrolet Astro owners approve.

Competitive Prices and Extensive Inventory

The average price for a 2003 Chevrolet Astro Catalytic Converter at Advance Auto Parts is around $675.64, with a range that starts at $9.99 and goes up to $2,466.00. With 20 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99306HM, MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51306, and "Walker CalCat CARB Universal Catalytic Converter 3"" Inlet (ID) 3"" Outlet (ID), 83509" start at just $204.99 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 Mufflers and Exhaust Pipes. At Advance Auto Parts, we’re here to help you keep your 2003 Chevrolet Astro in peak condition, inside and out.

Essential 2003 Chevrolet Astro Catalytic Converters

Walker – Walker Exhaust Pipe Flange Gasket, 31398 (Part No.31398)

Walker Exhaust Pipe Flange Gasket, 31398

from

$19.79
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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Walker – Walker Exhaust Pipe Flange Gasket, 31588 (Part No.31588)

Walker Exhaust Pipe Flange Gasket, 31588

from

$9.99
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.
See More

Walker – "Walker CalCat CARB Universal Catalytic Converter 3"" Inlet (ID) 3"" Outlet (ID), 81924" (Part No.81924)

"Walker CalCat CARB Universal Catalytic Converter 3"" Inlet (ID) 3"" Outlet (ID), 81924"

from

$897.99
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. Walker CalCat catalytic converters are thoroughly tested to ensure they meet CARB performance requirements.
See More

Walker – "Walker CalCat CARB Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 80906" (Part No.80906)

"Walker CalCat CARB Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 80906"

from

$673.99
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. Walker CalCat catalytic converters are thoroughly tested to ensure they meet CARB performance requirements.
See More

MagnaFlow – MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51209 (Part No.51209)

MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51209

from

$213.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51209. 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.
See More

MagnaFlow – MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51306 (Part No.51306)

MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51306

from

$221.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51306. 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.
See More

MagnaFlow – MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 445009 (Part No.445009)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 445009

from

$603.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 445009. 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.
See More

Walker – "Walker Standard EPA Universal Catalytic Converter 3"" Inlet (ID) 3"" Outlet (ID), 15043" (Part No.15043)

"Walker Standard EPA Universal Catalytic Converter 3"" Inlet (ID) 3"" Outlet (ID), 15043"

from

$159.99
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 Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 94006 (Part No.94006)

MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 94006

from

$131.99
Keep the check engine light off with MagnaFlow Standard Grade Federal/EPA Compliant Universal Catalytic Converter 94006. 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.
See More

MagnaFlow – MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 447106 (Part No.447106)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 447106

from

$571.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 447106. 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.
See More

MagnaFlow – MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 458008 (Part No.458008)

MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 458008

from

$2300.00
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 458008. 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 2000-2005 Chevrolet Astro 4.3L & 2000-2005 GMC Safari 4.3L. MagnaFlow 458008 includes (1) Torca Clamp, (2) Donut Gaskets, (1) Flange 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.
See More

MagnaFlow – MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 3391474 (Part No.3391474)

MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 3391474

from

$975.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 3391474. 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 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.
See More

Walker – "Walker CalCat CARB Direct Fit Catalytic Converter 3.25"" Inlet (ID) 2.75"" Outlet (OD), 81947" (Part No.81947)

"Walker CalCat CARB Direct Fit Catalytic Converter 3.25"" Inlet (ID) 2.75"" Outlet (OD), 81947"

from

$2466.00
Designed, tested and validated for assured compliance to meet CARB standards, Walker CalCat direct-fit catalytic converters are available for OBDII (1996 and newer) and non-OBD (1995 and older) vehicles and delivers a precise OE-style fit. Walker CalCat catalytic converters are thoroughly tested to ensure they meet CARB performance requirements.
See More

MagnaFlow – MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99209HM (Part No.99209HM)

MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99209HM

from

$196.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter 99209HM. 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.
See More

Walker – "Walker CalCat CARB Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 81723" (Part No.81723)

"Walker CalCat CARB Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 81723"

from

$983.99
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. Walker CalCat catalytic converters are thoroughly tested to ensure they meet CARB performance requirements.
See More

MagnaFlow – MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99647HM (Part No.99647HM)

MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99647HM

from

$281.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter 99647HM. 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.
See More

Walker – "Walker CalCat CARB Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 83403" (Part No.83403)

"Walker CalCat CARB Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 83403"

from

$613.99
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. Walker CalCat catalytic converters are thoroughly tested to ensure they meet CARB performance requirements.
See More

MagnaFlow – MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 339105 (Part No.339105)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 339105

from

$523.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 339105. 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.
See More

MagnaFlow – MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 339106 (Part No.339106)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 339106

from

$523.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 339106. 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.
See More

MagnaFlow – MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 458006 (Part No.458006)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 458006

from

$458.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 458006. 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.
See More

MagnaFlow – MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 447238 (Part No.447238)

MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 447238

from

$2300.00
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 447238. 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 2000-2005 Chevrolet Astro 4.3L & 2000-2005 GMC Safari 4.3L. MagnaFlow 447238 includes (1) Torca Clamp, (2) Donut Gaskets, (1) Flange 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.
See More

Walker – "Walker Ultra EPA Direct Fit Catalytic Converter 2.625"" Inlet (ID), 50418" (Part No.50418)

"Walker Ultra EPA Direct Fit Catalytic Converter 2.625"" Inlet (ID), 50418"

from

$768.99
Designed to comply with EPA standards while delivering premium performance with assured compliance, Walker Ultra direct-fit catalytic converters are available for import and domestic OBDII (1996 and newer) vehicles. Count on Walker Ultra converters for industry-leading fit and function.
See More

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

"Walker CalCat CARB Universal Catalytic Converter 3"" Inlet (ID) 3"" Outlet (ID), 81919"

from

$1243.00
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.
See More

Walker – "Walker CalCat CARB Universal Catalytic Converter 3"" Inlet (ID) 3"" Outlet (ID), 82703" (Part No.82703)

"Walker CalCat CARB Universal Catalytic Converter 3"" Inlet (ID) 3"" Outlet (ID), 82703"

from

$1029.00
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.
See More

MagnaFlow – MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99306HM (Part No.99306HM)

MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99306HM

from

$204.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter 99306HM. 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.
See More

Walker – "Walker Ultra EPA Universal Catalytic Converter 2.25"" Inlet (ID) 2.25"" Outlet (ID), 93271" (Part No.93271)

"Walker Ultra EPA Universal Catalytic Converter 2.25"" Inlet (ID) 2.25"" Outlet (ID), 93271"

from

$261.99
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.
See More

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

"Walker CalCat CARB Universal Catalytic Converter 3"" Inlet (ID) 3"" Outlet (ID), 80907"

from

$673.99
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. Walker CalCat catalytic converters are thoroughly tested to ensure they meet CARB performance requirements.
See More

MagnaFlow – MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 447209 (Part No.447209)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 447209

from

$425.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 447209. 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.
See More

Most Popular Catalytic Converter Gasket for 2003 Chevrolet Astros

Enhance your 2003 Chevrolet Astro with this popular Catalytic Converter Gasket we have in stock, for $9.99.

Walker – Walker Exhaust Pipe Flange Gasket, 31588 (Part No.31588)

Walker Exhaust Pipe Flange Gasket, 31588

from

$9.99
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.
See More

Best-Selling 2003 Chevrolet Astro Catalytic Converters

Upgrade your Astro with one of our 19 best-selling Catalytic Converters, earning an average 3.67 stars rating across 28 reviews.

MagnaFlow – MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99306HM (Part No.99306HM)

MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99306HM

from

$204.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter 99306HM. 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.
See More

Walker – "Walker Ultra EPA Universal Catalytic Converter 3"" Inlet (ID) 3"" Outlet (ID), 93304" (Part No.93304)

"Walker Ultra EPA Universal Catalytic Converter 3"" Inlet (ID) 3"" Outlet (ID), 93304"

from

$348.99
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.
See More

Walker – "Walker Ultra EPA Direct Fit Catalytic Converter 3.25"" Inlet (ID), 50526" (Part No.50526)

"Walker Ultra EPA Direct Fit Catalytic Converter 3.25"" Inlet (ID), 50526"

from

$771.99
Designed to comply with EPA standards while delivering premium performance with assured compliance, Walker Ultra direct-fit catalytic converters are available for import and domestic OBDII (1996 and newer) vehicles. Count on Walker Ultra converters for industry-leading fit and function.
See More

MagnaFlow – MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99209HM (Part No.99209HM)

MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99209HM

from

$196.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter 99209HM. 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.
See More

MagnaFlow – MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51306 (Part No.51306)

MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51306

from

$221.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51306. 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.
See More

Walker – "Walker Ultra EPA Universal Catalytic Converter 2.25"" Inlet (ID) 2.25"" Outlet (ID), 93271" (Part No.93271)

"Walker Ultra EPA Universal Catalytic Converter 2.25"" Inlet (ID) 2.25"" Outlet (ID), 93271"

from

$261.99
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.
See More

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

"Walker CalCat CARB Universal Catalytic Converter 3"" Inlet (ID) 3"" Outlet (ID), 83509"

from

$967.99
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. Walker CalCat catalytic converters are thoroughly tested to ensure they meet CARB performance requirements.
See More

Walker – "Walker CalCat CARB Direct Fit Catalytic Converter 3.25"" Inlet (ID) 2.75"" Outlet (OD), 81947" (Part No.81947)

"Walker CalCat CARB Direct Fit Catalytic Converter 3.25"" Inlet (ID) 2.75"" Outlet (OD), 81947"

from

$2466.00
Designed, tested and validated for assured compliance to meet CARB standards, Walker CalCat direct-fit catalytic converters are available for OBDII (1996 and newer) and non-OBD (1995 and older) vehicles and delivers a precise OE-style fit. Walker CalCat catalytic converters are thoroughly tested to ensure they meet CARB performance requirements.
See More

MagnaFlow – MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 458008 (Part No.458008)

MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 458008

from

$2300.00
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 458008. 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 2000-2005 Chevrolet Astro 4.3L & 2000-2005 GMC Safari 4.3L. MagnaFlow 458008 includes (1) Torca Clamp, (2) Donut Gaskets, (1) Flange 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.
See More

Walker – "Walker CalCat CARB Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 81723" (Part No.81723)

"Walker CalCat CARB Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 81723"

from

$983.99
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. Walker CalCat catalytic converters are thoroughly tested to ensure they meet CARB performance requirements.
See More

Walker – "Walker CalCat CARB Universal Catalytic Converter 3"" Inlet (ID) 3"" Outlet (ID), 81924" (Part No.81924)

"Walker CalCat CARB Universal Catalytic Converter 3"" Inlet (ID) 3"" Outlet (ID), 81924"

from

$897.99
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. Walker CalCat catalytic converters are thoroughly tested to ensure they meet CARB performance requirements.
See More

MagnaFlow – MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 49082 (Part No.49082)

MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 49082

from

$751.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 49082. 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 2000-2005 Chevrolet Astro 4.3L & 2000-2005 GMC Safari 4.3L. MagnaFlow 49082 includes (1) Torca Clamp, (2) Donut Gaskets, (1) Flange Gasket and interchanges with OE parts 15744810. 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.
See More

MagnaFlow – MagnaFlow Hm Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 23484 (Part No.23484)

MagnaFlow Hm Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 23484

from

$715.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 23484. 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 2000-2005 Chevrolet Astro 4.3L & 2000-2005 GMC Safari 4.3L. MagnaFlow 23484 includes (1) Torca Clamp, (2) Donut Gaskets, (1) Flange Gasket and interchanges with OE parts 15744810. 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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Walker – "Walker CalCat CARB Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 83403" (Part No.83403)

"Walker CalCat CARB Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 83403"

from

$613.99
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. 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, 459009 (Part No.459009)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 459009

from

$549.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 459009. 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, 458006 (Part No.458006)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 458006

from

$458.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 458006. 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 Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51647 (Part No.51647)

MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51647

from

$292.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51647. 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, 99647HM (Part No.99647HM)

MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99647HM

from

$281.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter 99647HM. 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 Universal Catalytic Converter, 51209 (Part No.51209)

MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51209

from

$213.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51209. 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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Top-Rated Catalytic Converter Brands For Your 2003 Chevrolet Astro

When it comes to finding the perfect Catalytic Converter for your 2003 Chevrolet Astro, 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 MagnaFlow, and more, all known for their exceptional customer ratings (average brand rating of 4.2 stars) and competitive prices, as low as $9.99. Purchasing a Catalytic Converter from us here at Advance Auto Parts is a smart move for both you and your 2003 Chevrolet Astro, providing peace of mind with parts that meet or exceed OEM standards.

Popular Walker 2003 Chevrolet Astro Catalytic Converters

If you’re looking for a top-quality Catalytic Converter for your 2003 Chevrolet Astro, Advance Auto Parts has exactly what you need with our selection of Walker Catalytic Converters. We have 3 Walker Catalytic Converters in stock for this fitment, all known for their durability and precision fit. With prices starting at just $9.99 and an average cost of $376.99, you’ll find the perfect Catalytic Converter for your needs and budget. Walker Catalytic Converters for the 2003 Chevrolet Astro come highly rated, with over 28 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 Ultra EPA Universal Catalytic Converter 3"" Inlet (ID) 3"" Outlet (ID), 93304"
from $348.99
(15)
"Walker Ultra EPA Universal Catalytic Converter 3"" Inlet (ID) 3"" Outlet (ID), 93304"
“This is a good replcacement if you have welding capability.Total cost to me was about half of what a complete new assembly.Must remove complete exhaus”
"Walker Ultra EPA Direct Fit Catalytic Converter 3.25"" Inlet (ID), 50526"
from $771.99
(1)
"Walker Ultra EPA Direct Fit Catalytic Converter 3.25"" Inlet (ID), 50526"
“Well made… fit perfect. Wish I had gotten better information on the o2 sensors. Some people say you can clean them, others say you can’t. It woul”
Walker Exhaust Pipe Flange Gasket, 31588
from $9.99
(12)
Walker Exhaust Pipe Flange Gasket, 31588
“Ok. Could have used 409 as well”

Top-Quality MagnaFlow 2003 Chevrolet Astro Catalytic Converters

For those in search of a high-quality Catalytic Converter for their 2003 Chevrolet Astro, Advance Auto Parts offers a great selection of MagnaFlow Catalytic Converters. With 2 MagnaFlow Catalytic Converters in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Catalytic Converters start at just $196.99, with an average price of $200.99, giving you a range of options to suit your budget. Backed by over 7 customer ratings and an average rating of 4.1 stars, MagnaFlow Catalytic Converters provide both reliability and excellent performance. Choosing a MagnaFlow Catalytic Converter from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99306HM
from $204.99
(6)
MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99306HM
“Worked perfect for the car, enough back pressure the “check engine” light doesn’t come on. It is a little louder than stock converter, but definitely ”

FAQs for 2003 Chevrolet Astro Catalytic Converters

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

Out of 20 Catalytic Converters that fit 2003 Chevrolet Astros, the following parts are the top sellers:

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

The prices of Catalytic Converters for the 2003 Chevrolet Astro range from $9.99 up to $2,466.00 for the most premium parts.

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

The average price for Catalytic Converters for the 2003 Chevrolet Astro is $675.64. 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 Astro model years?

Yes, we carry Catalytic Converters for 19 model years of Chevrolet Astros between 1985 and 2005. The following model years are the most popular for Catalytic Converter purchases: 2005, 2004, 2002, 2001, 2000, 1999, 1998, 1997, and 1996.

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

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 Astro?

Based on 40 reviews by customers, our 2003 Chevrolet Astro Catalytic Converters have an average customer rating of 3.9 stars. These are the highest-rated categories of Catalytic Converters for the 2003 Chevrolet Astro and their top-rated products:

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

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

Can I get help with 2003 Chevrolet Astro 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 Astro Catalytic Converters?

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