2021 Buick Enclave Catalytic Converters

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Keep Your 2021 Buick Enclave 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 2021 Buick Enclave 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. For example, Walker Catalytic Converters start at just $5.49 with an average 4.2 star rating. With over 67 reviews and a solid 4.3 star average, you can shop with confidence knowing other Buick Enclave owners approve.

Competitive Prices and Extensive Inventory

The average price for a 2021 Buick Enclave Catalytic Converter at Advance Auto Parts is around $499.83, with a range that starts at $5.49 and goes up to $1,331.00. With 8 options in stock from 3 trusted brands, finding the right fit is easy. Popular picks like MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51204, Dorman Manifold Converter – Not CARB Compliant – Not For Sale – NY – CA – ME, 674-068, and MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 23-278 start at just $213.99 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 Gaskets and Exhaust Pipes. At Advance Auto Parts, we’re here to help you keep your 2021 Buick Enclave in peak condition, inside and out.

Essential 2021 Buick Enclave Catalytic Converters

Dorman – Dorman Manifold Converter – Not CARB Compliant – Not For Sale – NY – CA – ME, 674-068 (Part No.674-068)

Dorman Manifold Converter - Not CARB Compliant - Not For Sale - NY - CA - ME, 674-068

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.
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MagnaFlow – MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 23-278 (Part No.23-278)

MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 23-278

from

$632.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 23-278. 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 2018-2023 Buick Enclave 3.6L & 2018-2023 Chevrolet Traverse 3.6L. MagnaFlow 23-278 includes (2) Nuts, (2) Bolts, (2) Gaskets, (2) Washers and interchanges with OE parts 23481265, 84256774. 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, 51579 (Part No.51579)

MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 51579

from

$331.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 51579. 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 51579 includes (2) Bolts, (2) Flange Gaskets and interchanges with OE parts 19418968, 20906951. 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, 49445 (Part No.49445)

MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 49445

from

$1223.00
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 49445. 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 49445 includes (2) Nuts, (5) Bolts, (1) Flange Gasket, (1) Flat Ring Gasket. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with California or Federal/EPA Emission systems.
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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.
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MagnaFlow – MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 5592579 (Part No.5592579)

MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 5592579

from

$1439.00
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 5592579. 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 5592579 includes (2) Bolts, (2) Flange Gaskets. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.
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Walker – Walker CalCat CARB Direct Fit Catalytic Converter, 84893 (Part No.84893)

Walker CalCat CARB Direct Fit Catalytic Converter, 84893

from

$673.99
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 2"" Outlet (OD), 16710" (Part No.16710)

"Walker Ultra EPA Direct Fit Catalytic Converter 2"" Outlet (OD), 16710"

from

$655.99
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 Universal Catalytic Converter, 51206 (Part No.51206)

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

from

$213.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51206. The Universal design allows the part to fit a wide array of vehicles, and the stainless steel construction of this catalytic converter is highly resistant to corrosion. The single laser fusion welds greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with Federal/EPA Emission systems.
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Walker – Walker Ultra EPA Direct Fit Catalytic Converter Overall Length 17.000 IN, 16998 (Part No.16998)

Walker Ultra EPA Direct Fit Catalytic Converter Overall Length 17.000 IN, 16998

from

$592.99
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 14.000 IN, 14703 (Part No.14703)

Walker Ultra EPA Direct Fit Catalytic Converter Overall Length 14.000 IN, 14703

from

$634.99
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 Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 23-277 (Part No.23-277)

MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 23-277

from

$734.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 23-277. 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 2018-2023 Buick Enclave 3.6L & 2018-2023 Chevrolet Traverse 3.6L. MagnaFlow 23-277 includes (2) Nuts, (2) Bolts, (2) Gaskets, (2) Washers and interchanges with OE parts 19420286, 23481266, 84256773. 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 Ultra EPA Direct Fit Catalytic Converter 2"" Outlet (OD), 16709" (Part No.16709)

"Walker Ultra EPA Direct Fit Catalytic Converter 2"" Outlet (OD), 16709"

from

$701.99
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 Catalytic Converter, 5451446 (Part No.5451446)

MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 5451446

from

$1593.00
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 5451446. 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 5451446 includes (2) Nuts, (2) Bolts, (1) Flange Gasket, (1) Flat Ring Gasket. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.
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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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Walker – Walker Exhaust Pipe Flange Gasket, 31337 (Part No.31337)

Walker Exhaust Pipe Flange Gasket, 31337

from

$5.49
Complete your exhaust repair with Walker gaskets and flanges. Built from quality materials for long lasting durability, they’re available in a range of styles and sizes. Each component is designed to work seamlessly with OE exhaust systems and Walker aftermarket replacement parts.
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Most Popular Catalytic Converter Gaskets for 2021 Buick Enclaves

Enhance your 2021 Buick Enclave with one of the 2 Catalytic Converter Gaskets we have in stock, starting at just $5.49.

Walker – Walker Exhaust Pipe Flange Gasket, 31337 (Part No.31337)

Walker Exhaust Pipe Flange Gasket, 31337

from

$5.49
Complete your exhaust repair with Walker gaskets and flanges. Built from quality materials for long lasting durability, they’re available in a range of styles and sizes. Each component is designed to work seamlessly with OE exhaust systems and Walker aftermarket replacement parts.
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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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Best-Selling 2021 Buick Enclave Catalytic Converters

Upgrade your Enclave with one of our 6 best-selling Catalytic Converters.

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

MagnaFlow – MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 280133 (Part No.280133)

MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 280133

from

$1331.00
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 280133. 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 2018-2023 Buick Enclave 3.6L & 2018-2023 Chevrolet Traverse 3.6L. MagnaFlow 280133 includes (6) Nuts, (2) Bolts, (6) Washers, (1) Torca Clamp and interchanges with OE parts 19420302, 84256772, 84297421, 84381384, 84396965, 84486634. 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 Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 23-277 (Part No.23-277)

MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 23-277

from

$734.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 23-277. 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 2018-2023 Buick Enclave 3.6L & 2018-2023 Chevrolet Traverse 3.6L. MagnaFlow 23-277 includes (2) Nuts, (2) Bolts, (2) Gaskets, (2) Washers and interchanges with OE parts 19420286, 23481266, 84256773. 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 Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 23-278 (Part No.23-278)

MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 23-278

from

$632.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 23-278. 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 2018-2023 Buick Enclave 3.6L & 2018-2023 Chevrolet Traverse 3.6L. MagnaFlow 23-278 includes (2) Nuts, (2) Bolts, (2) Gaskets, (2) Washers and interchanges with OE parts 23481265, 84256774. 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

Dorman – Dorman Manifold Converter – Not CARB Compliant – Not For Sale – NY – CA – ME, 674-068 (Part No.674-068)

Dorman Manifold Converter - Not CARB Compliant - Not For Sale - NY - CA - ME, 674-068

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

Walker – Walker Ultra EPA Direct Fit Catalytic Converter, 14852 (Part No.14852)

Walker Ultra EPA Direct Fit Catalytic Converter, 14852

from

$481.99
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

Top-Rated Catalytic Converter Brands For Your 2021 Buick Enclave

When it comes to finding the perfect Catalytic Converter for your 2021 Buick Enclave, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 3 trusted brands. We carry the most popular Catalytic Converter brands including Walker, and more, all known for their exceptional customer ratings (average brand rating of 4.2 stars) and competitive prices, as low as $5.49. Purchasing a Catalytic Converter from us here at Advance Auto Parts is a smart move for both you and your 2021 Buick Enclave, providing peace of mind with parts that meet or exceed OEM standards.

Popular Walker 2021 Buick Enclave Catalytic Converters

If you’re looking for a top-quality Catalytic Converter for your 2021 Buick Enclave, Advance Auto Parts has exactly what you need with our selection of Walker Catalytic Converters. We have 2 Walker Catalytic Converters in stock for this fitment, all known for their durability and precision fit. With prices starting at just $5.49 and an average cost of $5.84, you’ll find the perfect Catalytic Converter for your needs and budget. Walker Catalytic Converters for the 2021 Buick Enclave come highly rated, with over 67 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, 31337
from $5.49
(23)
Walker Exhaust Pipe Flange Gasket, 31337
“Right part”
Walker Exhaust Pipe Flange Gasket, 31374
from $6.19
(44)
Walker Exhaust Pipe Flange Gasket, 31374
“Crush gasket fit”

FAQs for 2021 Buick Enclave Catalytic Converters

What are the best-selling Catalytic Converters for 2021 Buick Enclaves?

Out of 8 Catalytic Converters that fit 2021 Buick Enclaves, the following parts are the top sellers:

What’s the price range for 2021 Buick Enclave Catalytic Converters?

The prices of Catalytic Converters for the 2021 Buick Enclave range from $5.49 up to $1,331.00 for the most premium parts.

What is the average price of a Catalytic Converter for a 2021 Buick Enclave?

The average price for Catalytic Converters for the 2021 Buick Enclave is $499.83. 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 Buick Enclave model years?

Yes, we carry Catalytic Converters for 15 model years of Buick Enclaves between 2008 and 2024. The following model years are the most popular for Catalytic Converter purchases: 2020, 2019, 2018, 2017, 2016, 2015, 2014, 2013, and 2012.

What are the cheapest Catalytic Converters for my 2021 Buick Enclave?

What are the top-rated Catalytic Converters that fit the 2021 Buick Enclave?

The one 2021 Buick Enclave Catalytic Converter we have in stock is the Walker Exhaust Pipe Flange Gasket, 31337. It is rated 4.5 stars and costs $5.49.

What types of Catalytic Converters do you sell for my 2021 Buick Enclave?

As of 8/2/26, these are some of the most in-demand types of Catalytic Converters for a 2021 Buick Enclave:

Can I get help with 2021 Buick Enclave Catalytic Converter orders?

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

What is your return policy for Buick Enclave Catalytic Converters?

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