Subaru WRX Catalytic Converters

Your One-Stop Shop For Trusted Subaru WRX Catalytic Converters

If you’re in search of Subaru WRX Catalytic Converters aftermarket or OEM parts, consider your search over! Advance Auto Parts carries 5 Catalytic Converters from top brands with prices ranging from $194.99 to $839.99.

Beyond great prices, we stock trusted brands manufacturing all types of Catalytic Converters for your Subaru WRX.

And don’t forget to read customer reviews across all Catalytic Converters categories in our catalog. Buy with confidence by leveraging past customer experiences of our aftermarket and OEM parts.

At Advance Auto Parts, we don’t think top quality Catalytic Converters have to cost top dollar, and we prove it. Browse our top Subaru WRX Catalytic Converters below, order online to ship to your home, or head into your nearest Advance Auto Parts location to get started.

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Essential Subaru WRX Catalytic Converters

Walker – CalCat CARB Universal Catalytic Converter 2.25" Inlet (ID) 2.25" Outlet (ID) (Part No.84406)

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

from

$347.99
Designed, tested and validated for assured compliance to meet CARB standards, Walker CalCat Universal Catalytic Converters are available for OBDII (1996 and newer) and non-OBD (1995 and older) vehicles.

Product Features:
  • CARB COMPLIANT : For use on OBDII vehicles, 1996 and newer and non-OBD 1995 and older. Legal for sale in CA, CO, NY & other states requiring CARB-compliant replacement converters. Consult your state’s aftermarket converter regulations.
  • SUPERIOR TECHNOLOGY : Optimal high technology wash coat formulated to deliver superior performance (as compared to EPA-compliant converters)
  • CONSISTENT PERFORMANCE : Utilizes a precise OE-style coating process to apply catalyst material to the substrate, providing consistent performance for assured emissions compliance
  • DURABLE : Features stainless-steel body with aluminized pipe and heat shields for durability
  • FLEXIBLE SOLUTION : Customizable design features expandable bushings for easy fitment and may require specialized fabrication and/or welding for installation
  • BUY WITH CONFIDENCE : Backed by Walker’s 50,000-mile/80,000-kilometer emissions and structural integrity warranty
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MagnaFlow – Direct-Fit OEM Grade Federal / EPA Compliant Catalytic Converter (Part No.21-822)

Direct-Fit OEM Grade Federal / EPA Compliant Catalytic Converter

from

$839.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-822. 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 2015-2021 Subaru WRX 2.0L & 2014-2018 Subaru Forester 2.0L. MagnaFlow 21-822 includes (2) Flat Washers, (3) Nuts, (1) Flange Gasket, (3) Bolts and interchanges with OE parts 44612AA770, 44612AA771. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with California or Federal/EPA Emission systems.

Product Features:
  • Simplifies installation with essential gaskets and hardware being included in the box
  • Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
  • High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
  • Simplifies installation with essential gaskets and hardware being included in the box
  • Durable 308 stainless steel MIG welds
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MagnaFlow – Direct-Fit OEM Grade Federal / EPA Compliant Catalytic Converter (Part No.21-232)

Direct-Fit OEM Grade Federal / EPA Compliant Catalytic Converter

from

$453.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-232. 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 2015-2016 Subaru WRX 2.0L. MagnaFlow 21-232 includes (1) Flange Gasket, (1) Donut Gasket, (1) Torca Clamp and interchanges with OE parts 44621AA190. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with California or Federal/EPA Emission systems.

Product Features:
  • Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
  • Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
  • Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
  • High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
  • Simplifies installation with essential gaskets and hardware being included in the box
  • Durable 308 stainless steel MIG welds
See More

MagnaFlow – Direct-Fit OEM Grade Federal / EPA Compliant Catalytic Converter (Part No.52621)

Direct-Fit OEM Grade Federal / EPA Compliant Catalytic Converter

from

$534.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 52621. 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 2015-2021 Subaru WRX 2.0L & 2014-2018 Subaru Forester 2.0L. MagnaFlow 52621 includes (1) Donut Gasket, (2) Flat Washers, (2) Bolts, (2) Nuts, (1) Flange Gasket and interchanges with OE parts 44621AA140. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with California or Federal/EPA Emission systems.

Product Features:
  • Simplifies installation with essential gaskets and hardware being included in the box
  • Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
  • High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
  • Simplifies installation with essential gaskets and hardware being included in the box
  • Durable 308 stainless steel MIG welds
See More

MagnaFlow – Universal OEM Grade Federal / EPA Compliant Catalytic Converter (Part No.51206)

Universal OEM Grade Federal / EPA Compliant Catalytic Converter

from

$194.99
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.

Product Features:
  • Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
  • Durable 308 stainless steel MIG welds
  • Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
  • High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
  • Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off
See More

Catalytic Converters Brands You Can Trust For Your Subaru WRX

2 trusted brands of Catalytic Converters line our shelves, ready to help keep your Subaru WRX running smooth. Below are some of the most popular brands and their top Catalytic Converters offerings:

Most Purchased Subaru WRX Catalytic Converters from Walker

When you buy the most frequently purchased Walker brand Catalytic Converters, you can be confident it will be the right part for your Subaru WRX. Here are the Walker Catalytic Converters Advanced Auto customers buy the most:
CalCat CARB Universal Catalytic Converter 2.25" Inlet (ID) 2.25" Outlet (ID)
from $347.99
This product is not rated
CalCat CARB Universal Catalytic Converter 2.25" Inlet (ID) 2.25" Outlet (ID)
Catalytic Converters
Universal OEM Grade Federal / EPA Compliant Catalytic Converter
from $194.99
This product is not rated
Universal OEM Grade Federal / EPA Compliant Catalytic Converter
Catalytic Converters
Direct-Fit OEM Grade Federal / EPA Compliant Catalytic Converter
from $453.99
This product is not rated
Direct-Fit OEM Grade Federal / EPA Compliant Catalytic Converter
Catalytic Converters

FAQs for Subaru WRX Catalytic Converters

What are the most purchased Catalytic Converters for the Subaru WRX?

Out of 5 Catalytic Converters for the Subaru WRX, the most popular in our inventory are:
CalCat CARB Universal Catalytic Converter 2.25" Inlet (ID) 2.25" Outlet (ID)
from $347.99
This product is not rated
CalCat CARB Universal Catalytic Converter 2.25" Inlet (ID) 2.25" Outlet (ID)
Catalytic Converters
Universal OEM Grade Federal / EPA Compliant Catalytic Converter
from $194.99
This product is not rated
Universal OEM Grade Federal / EPA Compliant Catalytic Converter
Catalytic Converters
Direct-Fit OEM Grade Federal / EPA Compliant Catalytic Converter
from $453.99
This product is not rated
Direct-Fit OEM Grade Federal / EPA Compliant Catalytic Converter
Catalytic Converters