2018 Subaru Legacy Catalytic Converters

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Keep Your 2018 Subaru Legacy 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 2018 Subaru Legacy looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Catalytic Converters and Catalytic Converter Gaskets. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Top-Rated Catalytic Converters from Trusted Brands

Looking for a reliable Catalytic Converter? We’ve got you covered with options from brands you know and trust like Walker. For example, Walker Catalytic Converters start at just $5.49 with an average 4.2 star rating. With over 116 reviews and a solid 4.8 star average, you can shop with confidence knowing other Subaru Legacy owners approve.

Competitive Prices and Extensive Inventory

The average price for a 2018 Subaru Legacy Catalytic Converter at Advance Auto Parts is around $411.76, with a range that starts at $5.49 and goes up to $1,202.00. With 5 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like Walker Ultra EPA Direct Fit Catalytic Converter Overall Length 27.625 IN, 16851, Walker Ultra EPA Direct Fit Catalytic Converter Overall Length 59.000 IN, 55708, and MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Manifold Catalytic Converter, 52202 start at just $305.99 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 2018 Subaru Legacy in peak condition, inside and out.

Essential 2018 Subaru Legacy Catalytic Converters

MagnaFlow – MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 21-276 (Part No.21-276)

MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 21-276

from

$691.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-276. 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 2010-2012 Subaru Legacy 2.5L. MagnaFlow 21-276 includes (1) Flange Gasket and interchanges with OE parts 44612AA490. 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 Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99184HM (Part No.99184HM)

MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99184HM

from

$188.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter 99184HM. The Universal design allows the part to fit a wide array of vehicles, and the stainless steel construction of this catalytic converter is highly resistant to corrosion. The single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with Federal/EPA Emission systems.
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Walker – Walker CalCat CARB Direct Fit Catalytic Converter Overall Length 59.290 IN, 84496 (Part No.84496)

Walker CalCat CARB Direct Fit Catalytic Converter Overall Length 59.290 IN, 84496

from

$591.99
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 Overall Length 55.750 IN, 55609 (Part No.55609)

Walker Ultra EPA Direct Fit Catalytic Converter Overall Length 55.750 IN, 55609

from

$1152.00
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 Manifold Catalytic Converter, 52202 (Part No.52202)

MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Manifold Catalytic Converter, 52202

from

$921.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Manifold Catalytic Converter 52202. 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 52202 includes (1) Torca Clamp, (1) Donut Gasket, (2) Flange Gaskets and interchanges with OE parts 44620AC23A, 44620AC25A. 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, 49160 (Part No.49160)

MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 49160

from

$1054.00
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 49160. 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 49160 includes (2) Nuts, (2) Bolts, (2) Flange Gaskets and interchanges with OE parts 44102AE200, 44102AG030, 44102AG040, 44612AA120, 44612AA130, 44612AA210, 44612AA280, 44612AA290, 44612AA350, 44612AA360, 44612AA370, 44612AA540, 44612AA590. 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 Standard Grade Federal / EPA Compliant Direct-Fit Catalytic Converter, 23283 (Part No.23283)

MagnaFlow Standard Grade Federal / EPA Compliant Direct-Fit Catalytic Converter, 23283

from

$224.99
Keep the check engine light off with MagnaFlow Standard Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 23283. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this converter yourself using the proper tools, no cutting or welding required. MagnaFlow’s state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with Federal/EPA Emission systems.
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Walker – "Walker CalCat CARB Universal Catalytic Converter 2"" Inlet (ID) 2"" Outlet (ID), 83218" (Part No.83218)

"Walker CalCat CARB Universal Catalytic Converter 2"" Inlet (ID) 2"" Outlet (ID), 83218"

from

$624.99
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 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.
See More

MagnaFlow – MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51234 (Part No.51234)

MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51234

from

$216.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51234. 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 CalCat CARB Direct Fit Catalytic Converter Overall Length 63.125 IN, 84497 (Part No.84497)

Walker CalCat CARB Direct Fit Catalytic Converter Overall Length 63.125 IN, 84497

from

$627.99
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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MagnaFlow – MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 337871 (Part No.337871)

MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 337871

from

$923.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 337871. 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 1990-1994 Subaru Legacy 2.2L. MagnaFlow 337871 includes (2) Flange Gaskets, (1) Crush 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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MagnaFlow – MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 444084 (Part No.444084)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 444084

from

$365.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 444084. The Universal design allows the part to fit a wide array of vehicles, and the stainless steel construction of this catalytic converter is highly resistant to corrosion. The single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.
See More

Walker – "Walker CalCat CARB Universal Catalytic Converter 2"" Inlet (ID) 2"" Outlet (ID), 84307" (Part No.84307)

"Walker CalCat CARB Universal Catalytic Converter 2"" Inlet (ID) 2"" Outlet (ID), 84307"

from

$544.99
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 Exhaust Pipe Flange Gasket, 31369 (Part No.31369)

Walker Exhaust Pipe Flange Gasket, 31369

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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Victor Reinz – Victor Reinz Catalytic Converter Gasket, 71-15760-00 (Part No.71-15760-00)

Victor Reinz Catalytic Converter Gasket, 71-15760-00

from

$28.49
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, 31388 (Part No.31388)

Walker Exhaust Pipe Flange Gasket, 31388

from

$5.99
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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Victor Reinz – Victor Reinz Catalytic Converter Gasket, 71-15165-00 (Part No.71-15165-00)

Victor Reinz Catalytic Converter Gasket, 71-15165-00

from

$5.99
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, 31357 (Part No.31357)

Walker Exhaust Pipe Flange Gasket, 31357

from

$19.79
Complete your exhaust repair with Walker gaskets and flanges. Built from quality materials for long lasting durability, they’re available in a range of styles and sizes. Each component is designed to work seamlessly with OE exhaust systems and Walker aftermarket replacement parts.
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Most Popular Catalytic Converters for 2018 Subaru Legacies

Enhance your 2018 Subaru Legacy with one of the 3 Catalytic Converters we have in stock, starting at just $305.99.

Walker – Walker Ultra EPA Direct Fit Catalytic Converter Overall Length 27.625 IN, 16851 (Part No.16851)

Walker Ultra EPA Direct Fit Catalytic Converter Overall Length 27.625 IN, 16851

from

$1202.00
Designed to comply with EPA standards while delivering premium performance with assured compliance, Walker Ultra direct-fit catalytic converters are available for import and domestic OBDII (1996 and newer) vehicles. Count on Walker Ultra converters for industry-leading fit and function.
See More

MagnaFlow – MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Manifold Catalytic Converter, 52202 (Part No.52202)

MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Manifold Catalytic Converter, 52202

from

$921.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Manifold Catalytic Converter 52202. 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 52202 includes (1) Torca Clamp, (1) Donut Gasket, (2) Flange Gaskets and interchanges with OE parts 44620AC23A, 44620AC25A. 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

Walker – Walker Ultra EPA Direct Fit Catalytic Converter Overall Length 59.000 IN, 55708 (Part No.55708)

Walker Ultra EPA Direct Fit Catalytic Converter Overall Length 59.000 IN, 55708

from

$305.99
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

Best-Selling 2018 Subaru Legacy Catalytic Converter Gaskets

Upgrade your Legacy with one of our 2 best-selling Catalytic Converter Gaskets, earning an average 4.75 stars rating across 29 reviews.

Walker – Walker Exhaust Pipe Flange Gasket, 31369 (Part No.31369)

Walker Exhaust Pipe Flange Gasket, 31369

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.
See More

Walker – Walker Exhaust Pipe Flange Gasket, 31388 (Part No.31388)

Walker Exhaust Pipe Flange Gasket, 31388

from

$5.99
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

Top-Rated Catalytic Converter Brands For Your 2018 Subaru Legacy

When it comes to finding the perfect Catalytic Converter for your 2018 Subaru Legacy, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 2 trusted brands. We carry the most popular Catalytic Converter brands including Walker, and more, all known for their exceptional customer ratings (average brand rating of 4.2 stars) and competitive prices, as low as $5.49. Purchasing a Catalytic Converter from us here at Advance Auto Parts is a smart move for both you and your 2018 Subaru Legacy, providing peace of mind with parts that meet or exceed OEM standards.

Popular Walker 2018 Subaru Legacy Catalytic Converters

If you’re looking for a top-quality Catalytic Converter for your 2018 Subaru Legacy, 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 $5.74, you’ll find the perfect Catalytic Converter for your needs and budget. Walker Catalytic Converters for the 2018 Subaru Legacy come highly rated, with over 29 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, 31388
from $5.99
(22)
Walker Exhaust Pipe Flange Gasket, 31388
“Worked great. Good product.”
Walker Exhaust Pipe Flange Gasket, 31369
from $5.49
(7)
Walker Exhaust Pipe Flange Gasket, 31369
“It was a perfect fit on my 4 cylinder 1999 S10 Xtreme. Note that the bolts to separate the pipe from the catalytic convertor can be very tough to remo”

FAQs for 2018 Subaru Legacy Catalytic Converters

What are the best-selling Catalytic Converters for 2018 Subaru Legacies?

Out of 5 Catalytic Converters that fit 2018 Subaru Legacies, the following parts are the top sellers:

What’s the price range for 2018 Subaru Legacy Catalytic Converters?

The prices of Catalytic Converters for the 2018 Subaru Legacy range from $5.49 up to $1,202.00 for the most premium parts.

What is the average price of a Catalytic Converter for a 2018 Subaru Legacy?

The average price for Catalytic Converters for the 2018 Subaru Legacy is $411.76. 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 Subaru Legacy model years?

Yes, we carry Catalytic Converters for 33 model years of Subaru Legacies between 1990 and 2024. The following model years are the most popular for Catalytic Converter purchases: 2019, 2017, 2016, 2015, 2014, 2013, 2012, 2011, and 2010.

What are the cheapest Catalytic Converters for my 2018 Subaru Legacy?

Does Advance Auto Parts sell Catalytic Converters for any other 2018 Subaru models?

Yes. We stock Catalytic Converters for 6 other popular 2018 Subaru models. Some of the most popular are 2018 Outback Catalytic Converters, 2018 Impreza Catalytic Converters, 2018 Forester Catalytic Converters, 2018 WRX Catalytic Converters, and 2018 Crosstrek Catalytic Converters.

What are the top-rated Catalytic Converters that fit the 2018 Subaru Legacy?

The one 2018 Subaru Legacy Catalytic Converter we have in stock is the Walker Exhaust Pipe Flange Gasket, 31369. It is rated 5 stars and costs $5.49.

What types of Catalytic Converters do you sell for my 2018 Subaru Legacy?

As of 8/2/26, these are some of the most in-demand types of Catalytic Converters for a 2018 Subaru Legacy:

Can I get help with 2018 Subaru Legacy Catalytic Converter orders?

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

What is your return policy for Subaru Legacy Catalytic Converters?

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