2003 Chevrolet Impala Catalytic Converters

Essential 2003 Chevrolet Impala Catalytic Converters

Walker – Catalytic Converter- EPA Ultra, Direct Replacement, No Fabrication Needed (Part No.54626)

Catalytic Converter- EPA Ultra, Direct Replacement, No Fabrication Needed

from

$391.99
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:
  • EPA COMPLIANT — For use on OBDII vehicles, 1996 and newer. Not legal for sale or use in CA, CO or NY. Legal inME 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
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MagnaFlow – Standard Grade Federal / EPA Compliant Direct-Fit Catalytic Converter (Part No.93456)

Standard Grade Federal / EPA Compliant Direct-Fit Catalytic Converter

from

$304.99
MagnaFlow Standard Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 93456 helps keep the check engine light off. DIY installation is easy with the proper tools (no cutting or welding required). With features including mandrel-bent tubing to eliminate flow restrictions and stainless steel construction to resist corrosion, you can have confidence in the quality of this catalytic converter. Using state-of-the-art 3D scanning systems in the design process, the MagnaFlow metrology department ensures this new part to fit and function like the original equipment. This direct-fit catalytic converter is designed to fit the 1982-1992 Chevrolet Camaro, 1983-1993 Chevrolet Caprice, and additional vehicles. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for pre-OBDII Federally registered vehicles.

Product Features:
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency.
  • Simplifies installation with essential gaskets and hardware being included in the box.
  • Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last.
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Walker – Catalytic Converter- EPA Ultra, Direct Replacement, No Fabrication Needed (Part No.54627)

Catalytic Converter- EPA Ultra, Direct Replacement, No Fabrication Needed

from

$404.99
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:
  • EPA COMPLIANT — For use on OBDII vehicles, 1996 and newer. Not legal for sale or use in CA, CO or NY. Legal inME 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
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Dorman – Manifold Converter – Not Carb Compliant – Not For Sale – NY – CA – ME (Part No.674-049)

Manifold Converter - Not Carb Compliant - Not For Sale - NY - CA - ME

from

$561.99
This catalytic converter with integrated exhaust manifold – a.k.a. manifold converter – is precision-engineered to match the original equipment on specific vehicle years, makes and models for a reliable replacement.

Product Features:
  • Direct replacement – this manifold converter is designed to match the fit and performance of the original equipment on specific vehicles
  • Convenient kit – includes gaskets and downpipe hardware to simplify installation
  • Durable construction -manufactured within strict tolerances for reliable longevity
  • Trustworthy value – backed by team of engineers and quality control experts in the United States
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Walker – Catalytic Converter- EPA Standard, Direct Replacement, No Fabrication Needed (Part No.15037)

Catalytic Converter- EPA Standard, Direct Replacement, No Fabrication Needed

from

$105.99
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.

Product Features:
  • EPA COMPLIANT — For use on pre-OBDII vehicles, 1995 and older. Not legal for sale or use in CA, CO and NY. Legal in ME on all pre-OBD vehicles only. Consult your state’s aftermarket converter regulations for details.
  • NO BREAK IN REQUIRED — Ready to operate with application-specific converter shell design and mat compression, no converter break in required after installation
  • 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
  • OE-STYLE DESIGN — Features aluminized heat shields when originally equipped, to match OE design, protecting the undercarriage from heat created by the converter
  • BUY WITH CONFIDENCE — Backed by Walker’s 25,000-mile/40,000-kilometer emissions and 5-year 50,000-mile/80,000-kilometer structural integrity warranty. Visit Walkerexhaust.com for details.
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MagnaFlow – OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter (Part No.52001)

OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter

from

$715.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 52001. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun body converter yourself using the proper tools, no cutting or welding required. MagnaFlow’s state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE spun body design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. Designed to fit the 2014-2020 Chevrolet Impala, 2010-2015 Buick LaCrosse, and more, this direct-fit catalytic converter also interchanges with OE parts 19419593 and 20894010, among others. Hardware is included to eliminate the hassle of working with corroded factory parts. 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.

Product Features:
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency.
  • Simplifies installation with essential gaskets and hardware being included in the box.
  • Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last.
See More

Walker – Catalytic Converter- EPA Ultra, Universal/ Fabrication Needed (Part No.93253)

Catalytic Converter- EPA Ultra, Universal/ Fabrication Needed

from

$184.99
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.

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.
  • 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
  • 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
  • OE-STYLE DESIGN — Features aluminized heat shields when originally equipped, to match OE design, protecting the undercarriage from heat created by the converter
  • BUY WITH CONFIDENCE — Backed by Walker’s 25,000-mile/40,000-kilometer emissions and 5-year 50,000-mile/80,000-kilometer structural integrity warranty. Visit Walkerexhaust.com for details.
See More

MagnaFlow – OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter (Part No.49195)

OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter

from

$496.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 49195. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun body converter yourself using the proper tools, no cutting or welding required. MagnaFlow’s state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE spun body design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This direct-fit catalytic converter is designed to fit the 2006-2011 Chevrolet Impala and 2006-2007 Chevrolet Monte Carlo. Avoid potential exhaust leaks by using the included gaskets to get a proper seal. 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.

Product Features:
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency.
  • Simplifies installation with essential gaskets and hardware being included in the box.
  • Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last.
See More

MagnaFlow – OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter (Part No.51532)

OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter

from

$397.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 51532. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun body converter yourself using the proper tools, no cutting or welding required. MagnaFlow’s state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE spun body design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This direct-fit catalytic converter is designed to fit the 1997-2005 Buick Century, 2000-2005 Chevrolet Impala, and additional vehicles. Avoid potential exhaust leaks by using the included gaskets to get a proper seal. 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.

Product Features:
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency.
  • Simplifies installation with essential gaskets and hardware being included in the box.
  • Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last.
See More

Walker – CalCat Catalytic Converter- CARB Certified, Universal / Fabrication Needed (Part No.81124)

CalCat Catalytic Converter- CARB Certified, Universal / Fabrication Needed

from

$669.99
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 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
  • BUY WITH CONFIDENCE — Backed by Walker’s 50,000-mile/80,000-kilometer emissions and structural integrity warranty
See More

MagnaFlow – California Grade CARB Compliant Direct-Fit Catalytic Converter (Part No.5461195)

California Grade CARB Compliant Direct-Fit Catalytic Converter

from

$1544.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 5461195. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun body converter yourself using the proper tools, no cutting or welding required. MagnaFlow’s state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE spun body design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This direct-fit catalytic converter is designed to fit the 2006-2009 Chevrolet Impala and 2006-2007 Chevrolet Monte Carlo. Avoid potential exhaust leaks by using the included gaskets to get a proper seal. 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:
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency.
  • Simplifies installation with essential gaskets and hardware being included in the box.
  • Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last.
See More

MagnaFlow – HM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter (Part No.23433)

HM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter

from

$379.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 23433. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun body converter yourself using the proper tools, no cutting or welding required. MagnaFlow’s state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE spun body design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This direct-fit catalytic converter is designed to fit the 1997-2005 Buick Century, 2000-2005 Chevrolet Impala, and additional vehicles. Avoid potential exhaust leaks by using the included gaskets to get a proper seal. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with Federal/EPA Emission systems.

Product Features:
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency.
  • Simplifies installation with essential gaskets and hardware being included in the box.
  • Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last.
See More

MagnaFlow – OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter (Part No.52594)

OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter

from

$566.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 52594. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun body converter yourself using the proper tools, no cutting or welding required. MagnaFlow’s state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE spun body design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. Designed to fit the 2014-2020 Chevrolet Impala, 2012-2015 Buick LaCrosse, and more, this direct-fit catalytic converter also interchanges with OE parts 20926628 and 20965398, among others. Hardware is included to eliminate the hassle of working with corroded factory parts. 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.

Product Features:
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency.
  • Simplifies installation with essential gaskets and hardware being included in the box.
  • Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last.
See More

MagnaFlow – Standard Grade Federal / EPA Compliant Direct-Fit Catalytic Converter (Part No.93418)

Standard Grade Federal / EPA Compliant Direct-Fit Catalytic Converter

from

$166.99
MagnaFlow Standard Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 93418 helps keep the check engine light off. DIY installation is easy with the proper tools (no cutting or welding required). With features including mandrel-bent tubing to eliminate flow restrictions and stainless steel construction to resist corrosion, you can have confidence in the quality of this catalytic converter. Using state-of-the-art 3D scanning systems in the design process, the MagnaFlow metrology department ensures this new part to fit and function like the original equipment. This direct-fit catalytic converter is designed to fit the 1978-1983 Chevrolet Malibu, 1978-1983 Chevrolet El Camino, and additional vehicles. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for pre-OBDII Federally registered vehicles.

Product Features:
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency.
  • Simplifies installation with essential gaskets and hardware being included in the box.
  • Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last.
See More

Walker – Donut Exhaust Pipe Flange Gasket: Graphite, Heat Resistant, Premium Materials (Part No.31391)

Donut Exhaust Pipe Flange Gasket: Graphite, Heat Resistant, Premium Materials

from

$11.49
Complete your exhaust repair with Walker┬« gaskets and flanges. Available in a variety of styles and sizes, they’re designed to work with OE exhaust components and Walker aftermarket replacement parts.

Product Features:
  • AVAILABLE IN DIFFERENT SIZES — Offered in a variety of styles and sizesfora quality vehicle repair
  • HEAT RESISTANT — Designed to resist heat for long-lasting performance
  • PREMIUM MATERIALS — Made from high-quality materials for durability and long life
  • ENGINEERING EXPERTISE — Parts are reviewed and validated and approved by Walker engineers through rigorous research and development
  • REAL-WORLD TESTED — Parts are tested on-vehicle and validated to ensure optimal performance on the road
  • EASIER TO INSTALL — Featuring slotted bolt holes (where applicable) for easy installation, gasket slips into place
  • BETTER TOGETHER — Use premium Walker-½ accessories when installing Walker catalytic converters and mufflers for a complete exhaust system upgrade
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Walker – Donut Exhaust Pipe Flange Gasket: Fiber with Steel, Heat Resistant, Premium Materials (Part No.31400)

Donut Exhaust Pipe Flange Gasket: Fiber with Steel, Heat Resistant, Premium Materials

from

$3.29
Complete your exhaust repair with Walker┬« gaskets and flanges. Available in a variety of styles and sizes, they’re designed to work with OE exhaust components and Walker aftermarket replacement parts.

Product Features:
  • AVAILABLE IN DIFFERENT SIZES — Offered in a variety of styles and sizesfora quality vehicle repair
  • HEAT RESISTANT — Designed to resist heat for long-lasting performance
  • PREMIUM MATERIALS — Made from high-quality materials for durability and long life
  • ENGINEERING EXPERTISE — Parts are reviewed and validated and approved by Walker engineers through rigorous research and development
  • REAL-WORLD TESTED — Parts are tested on-vehicle and validated to ensure optimal performance on the road
  • EASIER TO INSTALL — Featuring slotted bolt holes (where applicable) for easy installation, gasket slips into place
  • BETTER TOGETHER — Use premium Walker-½ accessories when installing Walker catalytic converters and mufflers for a complete exhaust system upgrade
See More

Walker – Donut Exhaust Pipe Flange Gasket: Metal, Heat Resistant, Premium Materials (Part No.31602)

Donut Exhaust Pipe Flange Gasket: Metal, Heat Resistant, Premium Materials

from

$16.99
Complete your exhaust repair with Walker┬« gaskets and flanges. Available in a variety of styles and sizes, they’re designed to work with OE exhaust components and Walker aftermarket replacement parts.

Product Features:
  • AVAILABLE IN DIFFERENT SIZES — Offered in a variety of styles and sizesfora quality vehicle repair
  • HEAT RESISTANT — Designed to resist heat for long-lasting performance
  • PREMIUM MATERIALS — Made from high-quality materials for durability and long life
  • ENGINEERING EXPERTISE — Parts are reviewed and validated and approved by Walker engineers through rigorous research and development
  • REAL-WORLD TESTED — Parts are tested on-vehicle and validated to ensure optimal performance on the road
  • EASIER TO INSTALL — Featuring slotted bolt holes (where applicable) for easy installation, gasket slips into place
  • BETTER TOGETHER — Use premium Walker-½ accessories when installing Walker catalytic converters and mufflers for a complete exhaust system upgrade
See More

AP Exhaust – Exhaust Pipe Gasket (Part No.H40061323273APE)

Exhaust Pipe Gasket

from

$10.44
Exhaust Pipe Gasket

FELPRO – Exhaust Pipe Gasket (Part No.H4006977394FEL)

Exhaust Pipe Gasket

from

$6.42
Exhaust Pipe Gasket

2003 Chevrolet Impala Catalytic Converters

Maybe you’re in the middle of a full rebuild of that 2003 Chevrolet Impala. Maybe you just need a couple of Catalytic Converters. Either way, Advance Auto Parts has 13 different Catalytic Converters in our inventory ranging from $16.99 to $641.99. That means you can find the exact parts or products you need to keep that 2003 Chevrolet Impala running smoothly.

Catalytic Converters are only as good as their brand. We stock 2 different brands to make sure you have plenty of trusted parts to choose from for your 2003 Chevrolet Impala. Walker and MagnaFlow are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

We know you’ll find the perfect Catalytic Converters for your 2003 Chevrolet Impala, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 143 reviews in this category, some of the top rated parts include HM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter with 3.8 stars and HM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter with 4.4 stars.

So if you’re in the market for aftermarket Catalytic Converters to keep your 2003 Chevrolet Impala rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

Catalytic Converters Brands To Make Your 2003 Chevrolet Impala Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 2003 Chevrolet Impala demands trusted brand parts and products to keep it running. Many trusted brands of Catalytic Converters make up Advance Auto Parts’ inventory, and all are ready to help make your Impala the best it can be. Be sure to browse some of our top Catalytic Converters brands and parts.

Popular Walker Catalytic Converters

We carry Walker parts in our stock across Catalytic Converters and Catalytic Converter Gaskets categories, plus more. For a 2003 Chevrolet Impala, our most popular Walker Catalytic Converters include:
EPA Ultra-Boxed Direct Fit Converter
from $409.99
(1)
EPA Ultra-Boxed Direct Fit Converter
Catalytic Converters

FAQs for 2003 Chevrolet Impala Catalytic Converters

What are the most purchased Catalytic Converters for the 2003 Chevrolet Impala?

Out of 13 Catalytic Converters for the 2003 Chevrolet Impala, the most popular in our inventory are:
OEM Grade Federal / EPA Compliant Universal Catalytic Converter
from $194.99
This product is not rated
OEM Grade Federal / EPA Compliant Universal Catalytic Converter
Catalytic Converters
EPA Ultra-Boxed Direct Fit Converter
from $424.99
This product is not rated
EPA Ultra-Boxed Direct Fit Converter
Catalytic Converters
HM Grade Federal / EPA Compliant Universal Catalytic Converter
from $178.99
This product is not rated
HM Grade Federal / EPA Compliant Universal Catalytic Converter
Catalytic Converters

What are the top-rated 2003 Chevrolet Impala Catalytic Converters?

Top-rated Catalytic Converters for your 2003 Chevrolet Impala based on customer reviews/ratings are:
HM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter
from $391.99
(13)
HM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter
“Hey it works great”
HM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter
from $379.99
(5)
HM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter
“After several mechanics “Checking” my car for months and numerous friends making suggestions, I finally made the decision to go on line to Advance Aut”