2003 Toyota 4Runner Catalytic Converters

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Keep Your 2003 Toyota 4Runner 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 Toyota 4Runner 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 $2.99 with an average 4.2 star rating. MagnaFlow offer similar pricing and quality, backed by strong customer feedback. With over 345 reviews and a solid 3.3 star average, you can shop with confidence knowing other Toyota 4Runner owners approve.

Competitive Prices and Extensive Inventory

The average price for a 2003 Toyota 4Runner Catalytic Converter at Advance Auto Parts is around $489.27, with a range that starts at $2.99 and goes up to $1,367.00. With 29 options in stock from 4 trusted brands, finding the right fit is easy. Popular picks like MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99204HM, MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99205HM, and MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99005HM 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 Mufflers. At Advance Auto Parts, we’re here to help you keep your 2003 Toyota 4Runner in peak condition, inside and out.

Essential 2003 Toyota 4Runner Catalytic Converters

Walker – Walker Exhaust Pipe Flange Gasket, 31307 (Part No.31307)

Walker Exhaust Pipe Flange Gasket, 31307

from

$2.99
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.
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Walker – Walker Exhaust Pipe Flange Gasket, 31534 (Part No.31534)

Walker Exhaust Pipe Flange Gasket, 31534

from

$7.69
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, 31332 (Part No.31332)

Walker Exhaust Pipe Flange Gasket, 31332

from

$5.79
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, 31321 (Part No.31321)

Walker Exhaust Pipe Flange Gasket, 31321

from

$4.99
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.
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Victor Reinz – Victor Reinz Catalytic Converter Gasket, 71-11141-00 (Part No.71-11141-00)

Victor Reinz Catalytic Converter Gasket, 71-11141-00

from

$4.99
With Victor Reinz gaskets, you can be sure you are getting sealing solutions that deliver OE quality gasket technology and engineering. That is because Victor Reinz is an original equipment supplier and the trusted choice of manufacturers the world over, offering broad coverage for foreign and domestic cars and trucks. In Victor Reinz gasket sets, you get the right combination of components needed for fast, long-lasting repairs.
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Walker – Walker Exhaust Pipe Flange Gasket, 31374 (Part No.31374)

Walker Exhaust Pipe Flange Gasket, 31374

from

$6.19
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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Dorman – Dorman Manifold Converter – CARB Compliant – Direct replacement, 672-920 (Part No.672-920)

Dorman Manifold Converter - CARB Compliant - Direct replacement, 672-920

from

$1600.00
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.
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MagnaFlow – MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 418005 (Part No.418005)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 418005

from

$477.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 418005. 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 2.25"" Inlet (ID) 2.25"" Outlet (ID), 93252" (Part No.93252)

"Walker Ultra EPA Universal Catalytic Converter 2.25"" Inlet (ID) 2.25"" Outlet (ID), 93252"

from

$195.99
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 Hm Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 23886 (Part No.23886)

MagnaFlow Hm Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 23886

from

$237.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 23886. 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. MagnaFlow 23886 includes (2) Flat Ring Gaskets and interchanges with OE parts 17410-16880, 18450-01090, 18450-01100, 18450-08030, 18450-08040, 18450-11160, 18450-16050, 18450-16140, 18450-16260, 18450-16340, 18450-16480, 18450-16490, 18450-16680, 18450-35020, 18450-35090, 18450-35140, 18450-43030, 18450-65010, 18450-65030, 18450-73040. 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 Manifold Catalytic Converter, 52057 (Part No.52057)

MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Manifold Catalytic Converter, 52057

from

$1242.00
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Manifold Catalytic Converter 52057. 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 Manifold Catalytic Converter is designed to fit the 2003-2004 Toyota 4Runner 4.0L. MagnaFlow 52057 includes (1) Flange Gasket, (1) Crush Ring Gasket and interchanges with OE parts 17140-31010, 17140-31011. 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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Dorman – Dorman Manifold Converter – Not CARB Compliant – Not For Sale – NY – CA – ME, 674-114 (Part No.674-114)

Dorman Manifold Converter - Not CARB Compliant - Not For Sale - NY - CA - ME, 674-114

from

$635.99
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.
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MagnaFlow – MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 447105 (Part No.447105)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 447105

from

$571.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 447105. 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 Direct Fit Catalytic Converter with Integrated Exhaust Manifold, 14661 (Part No.14661)

Walker Ultra EPA Direct Fit Catalytic Converter with Integrated Exhaust Manifold, 14661

from

$541.99
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.
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MagnaFlow – MagnaFlow California Grade Carb Compliant Direct-Fit Manifold Catalytic Converter, 5481341 (Part No.5481341)

MagnaFlow California Grade Carb Compliant Direct-Fit Manifold Catalytic Converter, 5481341

from

$1688.00
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Manifold Catalytic Converter 5481341. 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. MagnaFlow 5481341 includes (2) Nuts, (3) Bolts, (2) Flat Washers, (1) Flange Gasket, (1) Crush Ring Gasket and interchanges with OE parts 17150-0P010, 17150-0P020, 17150-0P070, 17150-0P100, 17150-0P140, 17150-0P260, 17150-31010, 17150-31011, 17150-31070, 17150-31240, 17150-31250, 17150-31320. 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 Direct-Fit Catalytic Converter, 93655 (Part No.93655)

MagnaFlow Hm Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 93655

from

$313.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 93655. 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 2003-2004 Lexus GX470 4.7L & 2003-2004 Toyota 4Runner 4.7L. MagnaFlow 93655 interchanges with OE parts 17410-50360. 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, 49698 (Part No.49698)

MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 49698

from

$571.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 49698. 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 2005-2009 Lexus GX470 4.7L & 2005-2009 Toyota 4Runner 4.7L. MagnaFlow 49698 interchanges with OE parts 17410-50450. 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 Standard EPA Direct Fit Catalytic Converter Overall Length 17.500 IN, 15653 (Part No.15653)

Walker Standard EPA Direct Fit Catalytic Converter Overall Length 17.500 IN, 15653

from

$338.99
Designed to provide the required reduction in tailpipe emissions and meet EPA emissions requirements with assured compliance, Walker Standard direct-fit catalytic converters are available for pre-OBD (1995 and older) vehicles. Count on Walker Standard converters for industry-leading fit and performance.
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aFe POWER – aFe POWER Catalytic Converter, 47-46008 (Part No.47-46008)

aFe POWER Catalytic Converter, 47-46008

from

$568.99
“Replace the faulty or old stock catalytic converter with the all new aFe power direct-fit cat replacement. This cat replacement is constructed of mandrel-bent, 100% MIG welded stainless steel for strength and durability. This unit comes with a 49-State federal approved cat and 3/8″” thick flanges for a secure hassle-free installation. This cat replacement is designed as a one piece system that retains the factory O2 sensor and hanger locations for a direct bolt-on and go solution. Stainless Steel Construction: This system is constructed of durable mandrel bent stainless steel tubing for maximum performance, corrosion resistance and strength, eliminating cracking. Factory Mounting Locations: Utilizes factory mounting locations and factory style flanges making it a true bolt-on system. Catalytic Converter: This kit comes with a 49-State federal approved catalytic converter for a bolt-on and go installation.”
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MagnaFlow – MagnaFlow Hm Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 23984 (Part No.23984)

MagnaFlow Hm Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 23984

from

$621.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 23984. 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 2003-2009 Toyota 4Runner 4.0L & 2007-2009 Toyota FJ Cruiser 4.0L. MagnaFlow 23984 includes (2) Crush Ring Gaskets and interchanges with OE parts 17450-31010, 17450-31030. 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 Direct Fit Catalytic Converter Overall Length 23.500 IN, 53625 (Part No.53625)

Walker Ultra EPA Direct Fit Catalytic Converter Overall Length 23.500 IN, 53625

from

$651.99
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

Dorman – Dorman Manifold Converter – Not CARB Compliant – Not For Sale – NY – CA – ME, 674-305 (Part No.674-305)

Dorman Manifold Converter - Not CARB Compliant - Not For Sale - NY - CA - ME, 674-305

from

$512.99
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.
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Walker – "Walker CalCat CARB Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 83508" (Part No.83508)

"Walker CalCat CARB Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 83508"

from

$661.99
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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Walker – Walker Ultra EPA Direct Fit Catalytic Converter Overall Length 36.250 IN, 53287 (Part No.53287)

Walker Ultra EPA Direct Fit Catalytic Converter Overall Length 36.250 IN, 53287

from

$728.99
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.
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Walker – Walker Ultra EPA Direct Fit Catalytic Converter Overall Length 31.43 IN, 50396 (Part No.50396)

Walker Ultra EPA Direct Fit Catalytic Converter Overall Length 31.43 IN, 50396

from

$652.99
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.
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Walker – Walker CalCat CARB Direct Fit Catalytic Converter Overall Length 17.000 IN, 81741 (Part No.81741)

Walker CalCat CARB Direct Fit Catalytic Converter Overall Length 17.000 IN, 81741

from

$1287.00
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.
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MagnaFlow – MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 53004 (Part No.53004)

MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 53004

from

$106.99
Keep the check engine light off with MagnaFlow Standard Grade Federal/EPA Compliant Universal Catalytic Converter 53004. 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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MagnaFlow – MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 5592306 (Part No.5592306)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 5592306

from

$1230.00
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 5592306. 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 Gaskets for 2003 Toyota 4Runners

Enhance your 2003 Toyota 4Runner with one of the 2 Catalytic Converter Gaskets we have in stock, starting at just $2.99.

Walker – Walker Exhaust Pipe Flange Gasket, 31332 (Part No.31332)

Walker Exhaust Pipe Flange Gasket, 31332

from

$5.79
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.
See More

Walker – Walker Exhaust Pipe Flange Gasket, 31307 (Part No.31307)

Walker Exhaust Pipe Flange Gasket, 31307

from

$2.99
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 Toyota 4Runner Catalytic Converters

Upgrade your 4Runner with one of our 27 best-selling Catalytic Converters, earning an average 3 stars rating across 28 reviews.

MagnaFlow – MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99205HM (Part No.99205HM)

MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99205HM

from

$196.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter 99205HM. 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 Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99204HM (Part No.99204HM)

MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99204HM

from

$196.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter 99204HM. 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

Dorman – Dorman Manifold Converter – Not CARB Compliant – Not For Sale – NY – CA – ME, 674-797 (Part No.674-797)

Dorman Manifold Converter - Not CARB Compliant - Not For Sale - NY - CA - ME, 674-797

from

$591.99
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.
See More

MagnaFlow – MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99005HM (Part No.99005HM)

MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99005HM

from

$242.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter 99005HM. 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"" Inlet (ID) 2"" Outlet (ID), 93251" (Part No.93251)

"Walker Ultra EPA Universal Catalytic Converter 2"" Inlet (ID) 2"" Outlet (ID), 93251"

from

$207.99
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

Dorman – Dorman Manifold Converter – Not CARB Compliant – Not For Sale – NY – CA – ME, 674-796 (Part No.674-796)

Dorman Manifold Converter - Not CARB Compliant - Not For Sale - NY - CA - ME, 674-796

from

$641.99
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.
See More

Walker – "Walker CalCat CARB Universal Catalytic Converter 2"" Inlet (ID) 2"" Outlet (ID), 83401" (Part No.83401)

"Walker CalCat CARB Universal Catalytic Converter 2"" Inlet (ID) 2"" Outlet (ID), 83401"

from

$495.99
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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Walker – Walker Ultra EPA Direct Fit Catalytic Converter with Integrated Exhaust Manifold, 16390 (Part No.16390)

Walker Ultra EPA Direct Fit Catalytic Converter with Integrated Exhaust Manifold, 16390

from

$1035.00
Designed to comply with EPA emissions requirements while delivering premium performance with assured compliance, Walker Ultra EPA-compliant manifold converters are available for import and domestic OBDII (1996 and newer) vehicles and feature an OE-style high-technology washcoat.
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Walker – "Walker CalCat CARB Universal Catalytic Converter 2.25"" Inlet (ID) 2.25"" Outlet (ID), 83402" (Part No.83402)

"Walker CalCat CARB Universal Catalytic Converter 2.25"" Inlet (ID) 2.25"" Outlet (ID), 83402"

from

$514.99
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, 51205 (Part No.51205)

MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51205

from

$213.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51205. 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, 51204 (Part No.51204)

MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51204

from

$213.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51204. 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 Direct Fit Catalytic Converter Overall Length 23.500 IN, 53625 (Part No.53625)

Walker Ultra EPA Direct Fit Catalytic Converter Overall Length 23.500 IN, 53625

from

$651.99
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

Dorman – Dorman Manifold Converter – CARB Compliant – Direct replacement, 673-7971 (Part No.673-7971)

Dorman Manifold Converter - CARB Compliant - Direct replacement, 673-7971

from

$1367.00
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.
See More

MagnaFlow – MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Manifold Catalytic Converter, 52057 (Part No.52057)

MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Manifold Catalytic Converter, 52057

from

$1242.00
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Manifold Catalytic Converter 52057. 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 Manifold Catalytic Converter is designed to fit the 2003-2004 Toyota 4Runner 4.0L. MagnaFlow 52057 includes (1) Flange Gasket, (1) Crush Ring Gasket and interchanges with OE parts 17140-31010, 17140-31011. 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 CalCat CARB Direct Fit Catalytic Converter 2.395"" Outlet (OD), 83465" (Part No.83465)

"Walker CalCat CARB Direct Fit Catalytic Converter 2.395"" Outlet (OD), 83465"

from

$1025.00
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.
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Walker – Walker Ultra EPA Direct Fit Catalytic Converter Overall Length 32.500 IN, 53623 (Part No.53623)

Walker Ultra EPA Direct Fit Catalytic Converter Overall Length 32.500 IN, 53623

from

$759.99
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.
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MagnaFlow – MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 49210 (Part No.49210)

MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 49210

from

$652.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 49210. 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 2003-2009 Toyota 4Runner 4.0L & 2007-2009 Toyota FJ Cruiser 4.0L. MagnaFlow 49210 includes (2) Crush Ring Gaskets and interchanges with OE parts 17450-31010, 17450-31030. 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 Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 49211 (Part No.49211)

MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 49211

from

$643.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 49211. 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 2003-2024 Toyota 4Runner 4.0L & 2007-2014 Toyota FJ Cruiser 4.0L. MagnaFlow 49211 includes (1) Donut Gasket, (2) Crush Ring Gaskets and interchanges with OE parts 17410-31380, 17410-31450, 17410-31A10, 17410-31F60. 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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Dorman – Dorman Manifold Converter – Not CARB Compliant – Not For Sale – NY – CA – ME, 674-114 (Part No.674-114)

Dorman Manifold Converter - Not CARB Compliant - Not For Sale - NY - CA - ME, 674-114

from

$635.99
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.
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MagnaFlow – MagnaFlow Hm Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 23984 (Part No.23984)

MagnaFlow Hm Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 23984

from

$621.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 23984. 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 2003-2009 Toyota 4Runner 4.0L & 2007-2009 Toyota FJ Cruiser 4.0L. MagnaFlow 23984 includes (2) Crush Ring Gaskets and interchanges with OE parts 17450-31010, 17450-31030. 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 Direct-Fit Catalytic Converter, 23985 (Part No.23985)

MagnaFlow Hm Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 23985

from

$612.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 23985. 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 2003-2024 Toyota 4Runner 4.0L & 2007-2014 Toyota FJ Cruiser 4.0L. MagnaFlow 23985 includes (1) Donut Gasket, (2) Crush Ring Gaskets and interchanges with OE parts 17410-31380, 17410-31450, 17410-31A10, 17410-31F60. 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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aFe POWER – aFe POWER Catalytic Converter, 47-46008 (Part No.47-46008)

aFe POWER Catalytic Converter, 47-46008

from

$568.99
“Replace the faulty or old stock catalytic converter with the all new aFe power direct-fit cat replacement. This cat replacement is constructed of mandrel-bent, 100% MIG welded stainless steel for strength and durability. This unit comes with a 49-State federal approved cat and 3/8″” thick flanges for a secure hassle-free installation. This cat replacement is designed as a one piece system that retains the factory O2 sensor and hanger locations for a direct bolt-on and go solution. Stainless Steel Construction: This system is constructed of durable mandrel bent stainless steel tubing for maximum performance, corrosion resistance and strength, eliminating cracking. Factory Mounting Locations: Utilizes factory mounting locations and factory style flanges making it a true bolt-on system. Catalytic Converter: This kit comes with a 49-State federal approved catalytic converter for a bolt-on and go installation.”
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aFe POWER – aFe POWER Catalytic Converter, 47-46007 (Part No.47-46007)

aFe POWER Catalytic Converter, 47-46007

from

$568.99
“Replace the faulty or old stock catalytic converter with the all new aFe power direct-fit cat replacement. This cat replacement is constructed of mandrel-bent, 100% MIG welded stainless steel for strength and durability. This unit comes with a 49-State federal approved cat and 3/8″” thick flanges for a secure hassle-free installation. This cat replacement is designed as a one piece system that retains the factory O2 sensor and hanger locations for a direct bolt-on and go solution. Stainless Steel Construction: This system is constructed of durable mandrel bent stainless steel tubing for maximum performance, corrosion resistance and strength, eliminating cracking. Factory Mounting Locations: Utilizes factory mounting locations and factory style flanges making it a true bolt-on system. Catalytic Converter: This kit comes with a 49-State federal approved catalytic converter for a bolt-on and go installation.”
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Walker – Walker Ultra EPA Direct Fit Catalytic Converter with Integrated Exhaust Manifold, 14661 (Part No.14661)

Walker Ultra EPA Direct Fit Catalytic Converter with Integrated Exhaust Manifold, 14661

from

$541.99
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.
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aFe POWER – aFe POWER Catalytic Converter, 47-46004 (Part No.47-46004)

aFe POWER Catalytic Converter, 47-46004

from

$491.99
“Replace the faulty or old stock catalytic converter with the all new aFe power direct-fit cat replacement. This cat replacement is constructed of mandrel-bent, 100% MIG welded stainless steel for strength and durability. This unit comes with a 49-State federal approved cat and 3/8″” thick flanges for a secure hassle-free installation. This cat replacement is designed as a one piece system that retains the factory O2 sensor and hanger locations for a direct bolt-on and go solution. Stainless Steel Construction: This system is constructed of durable mandrel bent stainless steel tubing for maximum performance, corrosion resistance and strength, eliminating cracking. Factory Mounting Locations: Utilizes factory mounting locations and factory style flanges making it a true bolt-on system. Catalytic Converter: This kit comes with a 49-State federal approved catalytic converter for a bolt-on and go installation.”
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MagnaFlow – MagnaFlow Hm Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 93655 (Part No.93655)

MagnaFlow Hm Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 93655

from

$313.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 93655. 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 2003-2004 Lexus GX470 4.7L & 2003-2004 Toyota 4Runner 4.7L. MagnaFlow 93655 interchanges with OE parts 17410-50360. 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, 51005 (Part No.51005)

MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51005

from

$252.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51005. 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 Toyota 4Runner

When it comes to finding the perfect Catalytic Converter for your 2003 Toyota 4Runner, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 4 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 $2.99. Purchasing a Catalytic Converter from us here at Advance Auto Parts is a smart move for both you and your 2003 Toyota 4Runner, providing peace of mind with parts that meet or exceed OEM standards.

Popular Walker 2003 Toyota 4Runner Catalytic Converters

If you’re looking for a top-quality Catalytic Converter for your 2003 Toyota 4Runner, 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 $2.99 and an average cost of $4.39, you’ll find the perfect Catalytic Converter for your needs and budget. Walker Catalytic Converters for the 2003 Toyota 4Runner come highly rated, with over 43 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, 31307
from $2.99
(5)
Walker Exhaust Pipe Flange Gasket, 31307
“replaced gasket”
Walker Exhaust Pipe Flange Gasket, 31332
from $5.79
(38)
Walker Exhaust Pipe Flange Gasket, 31332
“Perfect!!”

Top-Quality MagnaFlow 2003 Toyota 4Runner Catalytic Converters

For those in search of a high-quality Catalytic Converter for their 2003 Toyota 4Runner, Advance Auto Parts offers a great selection of MagnaFlow Catalytic Converters. With 1 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, giving you a range of options to suit your budget. Backed by over 5 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, 99205HM
from $196.99
(5)
MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99205HM
“needs to be cut to fit my application but worked great”

FAQs for 2003 Toyota 4Runner Catalytic Converters

What are the best-selling Catalytic Converters for 2003 Toyota 4Runners?

Out of 29 Catalytic Converters that fit 2003 Toyota 4Runners, the following parts are the top sellers:

What’s the price range for 2003 Toyota 4Runner Catalytic Converters?

The prices of Catalytic Converters for the 2003 Toyota 4Runner range from $2.99 up to $1,367.00 for the most premium parts.

What is the average price of a Catalytic Converter for a 2003 Toyota 4Runner?

The average price for Catalytic Converters for the 2003 Toyota 4Runner is $489.27. 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 Toyota 4Runner model years?

Yes, we carry Catalytic Converters for 39 model years of Toyota 4Runners between 1984 and 2024. The following model years are the most popular for Catalytic Converter purchases: 2019, 2018, 2017, 2016, 2015, 2014, 2013, 2012, and 2011.

What are the cheapest Catalytic Converters for my 2003 Toyota 4Runner?

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

Yes. We stock Catalytic Converters for 15 other popular 2003 Toyota models. Some of the most popular are 2003 Corolla Catalytic Converters, 2003 Camry Catalytic Converters, 2003 Land Cruiser Catalytic Converters, 2003 Celica Catalytic Converters, and 2003 Avalon Catalytic Converters.

What are the top-rated Catalytic Converters that fit the 2003 Toyota 4Runner?

Based on 345 reviews by customers, our 2003 Toyota 4Runner Catalytic Converters have an average customer rating of 3.3 stars. These are the highest-rated categories of Catalytic Converters for the 2003 Toyota 4Runner and their top-rated products:

What types of Catalytic Converters do you sell for my 2003 Toyota 4Runner?

As of 8/2/26, these are some of the most in-demand types of Catalytic Converters for a 2003 Toyota 4Runner:

Can I get help with 2003 Toyota 4Runner Catalytic Converter orders?

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

What is your return policy for Toyota 4Runner Catalytic Converters?

Advance Auto Parts keeps returns simple. For new Toyota 4Runner Catalytic Converters and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.