2012 Cadillac CTS Catalytic Converters

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Keep Your 2012 Cadillac CTS 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 2012 Cadillac CTS 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.

Competitive Prices and Extensive Inventory

The average price for a 2012 Cadillac CTS Catalytic Converter at Advance Auto Parts is around $482.56, with a range that starts at $18.49 and goes up to $1,031.99. With 16 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like Exhaust Pipe Flange Gasket, CalCat CARB Universal Catalytic Converter 2.25" Inlet (ID) 2.25" Outlet (ID), and Universal OEM Grade Federal / EPA Compliant Catalytic Converter start at just $18.49 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 Pipes and Exhaust System Kits. At Advance Auto Parts, we’re here to help you keep your 2012 Cadillac CTS in peak condition, inside and out.

Essential 2012 Cadillac CTS Catalytic Converters

Walker – Exhaust Pipe Flange Gasket (Part No.31379)

Exhaust Pipe Flange Gasket

from

$18.49
Complete your exhaust repair with Walker gaskets and flanges. Available in a variety of styles and sizes, they’re designed to work with OE exhaust components and Walker aftermarket replacement parts.

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

MagnaFlow – Direct-Fit California Grade CARB Compliant Catalytic Converter (Part No.551573)

Direct-Fit California Grade CARB Compliant Catalytic Converter

from

$997.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 551573. 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 2013-2015 Cadillac ATS 2.0L & 2014-2015 Cadillac CTS 2.0L. MagnaFlow 551573 includes (2) Bolts. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.

Product Features:
  • Durable 308 stainless steel MIG welds
  • 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 California Grade CARB Compliant Catalytic Converter (Part No.456205)

Universal California Grade CARB Compliant Catalytic Converter

from

$854.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 456205. 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.

Product Features:
  • Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
  • Compact, lightweight construction enables installation in confined areas, welding is required
  • Durable 308 stainless steel MIG welds
  • Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off
  • Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
See More

Walker – CalCat CARB Direct-Fit Catalytic Converter – 1.995" Outlet (OD) (Part No.82883)

CalCat CARB Direct-Fit Catalytic Converter - 1.995" Outlet (OD)

from

$1099.99
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.

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.
  • DIRECT-FIT DESIGN – Direct-fit bolt-on replacement solution with OE-style hangers, brackets, routings and heat shields for easy installation that doesn’t require specialized fabrication or welding
  • 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
  • STRONG AND DURABLE – Features thick OE-style flanges, hangers and brackets for strength and stainless-steel body with aluminized pipe and heat shields for durability
  • BUY WITH CONFIDENCE – Backed by Walker’s 50,000-mile/80,000-kilometer emissions and structural integrity limited warranty
See More

Walker – Ultra EPA Direct Fit Catalytic Converter 2" Outlet (OD) (Part No.16546)

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

from

$589.99
Designed to comply with EPA standards while delivering premium performance with assured compliance, Walker Ultra Direct-Fit Catalytic Converters provide premium performance and are available for import and domestic OBDII (1996 and newer) vehicles.

Product Features:
  • EPA COMPLIANT : For use on OBDII vehicles, 1996 and newer. Not legal for sale or use in CA, CO & NY. Legal in ME on EPA Federal Emission Equipped Vehicles only. Consult your state’s aftermarket converter regulations for details.
  • DIRECT-FIT DESIGN : Direct-fit bolt-on replacement solution with OE-style hangers, brackets, routings and heat shields for easy installation that doesn’t require specialized fabrication and/or welding
  • KEEPS CHECK ENGINE LIGHT OFF FOR EMISSIONS CODES : OE-style high-technology wash coat and optimal precious metal load delivers required reduction in tailpipe emissions to match vehicle application
  • STRONG AND DURABLE : Features thick OE-style flanges, hangers and brackets for strength and durability
  • OE-STYLE DESIGN : Features aluminized heat shields when originally equipped, to match OE design, protecting the undercarriage from heat created by the converter
  • BUY WITH CONFIDENCE : Backed by Walker’s 25,000-mile/40,000-kilometer emissions and 5-year 50,000-mile/80,000-kilometer structural integrity warranty. Visit Walkerexhaust.com for details.
See More

MagnaFlow – Direct-Fit OEM Grade Federal / EPA Compliant Catalytic Converter (Part No.51137)

Direct-Fit OEM Grade Federal / EPA Compliant Catalytic Converter

from

$539.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 51137. 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 Cadillac CTS 3.2L. MagnaFlow 51137 includes (4) Flat Washers, (2) Bolts, (2) Nuts, (1) Flange Gasket, (1) Crush 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.

Product Features:
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
  • OE-sized barbed exhaust hangers made from corrosion-resistant 410 stainless steel, designed to reduce noise and vibration
  • Durable 308 stainless steel MIG welds
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
  • 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
  • Simplifies installation with essential gaskets and hardware being included in the box
See More

Walker – Ultra EPA Direct-Fit Catalytic Converter – 2.24" Outlet (OD) (Part No.16684)

Ultra EPA Direct-Fit Catalytic Converter - 2.24" Outlet (OD)

from

$493.99
Product Features:
  • EPA COMPLIANT – For use on OBDII vehicles, 1996 and newer. Not legal for sale or use in CA, CO & NY. Legal in ME on EPA Federal Emission Equipped Vehicles only. Consult your state’s aftermarket converter regulations for details.
  • DIRECT-FIT DESIGN – Direct-fit bolt-on replacement solution with OE-style hangers, brackets, routings and heat shields for easy installation that doesn’t require specialized fabrication and welding
  • KEEPS CHECK ENGINE LIGHT OFF FOR EMISSIONS CODES – OE-style high-technology wash coat and optimal precious metal load delivers required reduction in tailpipe emissions to match vehicle application
  • STRONG AND DURABLE – Features thick OE-style flanges, hangers and brackets for strength and durability
  • OE-STYLE DESIGN – Features aluminized heat shields when originally equipped, to match OE design, protecting the undercarriage from heat created by the converter
  • BUY WITH CONFIDENCE – Backed by Walker’s 25,000-mile/40,000-kilometer emissions and 50,000-mile/80,000-kilometer structural integrity limited warranty. Visit Walkerexhaust.com for details.
See More

Walker – Ultra EPA Direct Fit Catalytic Converter, 3.111" Inlet (ID) 2.25" Outlet (OD) (Part No.75511)

Ultra EPA Direct Fit Catalytic Converter, 3.111" Inlet (ID) 2.25" Outlet (OD)

from

$364.99
Designed to comply with EPA standards while delivering premium performance with assured compliance, Walker® Ultra® Direct-Fit Catalytic Converters provide premium performance and are available for import and domestic OBDII (1996 and newer) vehicles.

Product Features:
  • EPA COMPLIANT — For use on OBDII vehicles, 1996 and newer. Not legal for sale or use in CA, CO or NY. Legal in ME on EPA Federal Emission Equipped Vehicles only. Consult your state’s aftermarket converter regulations for details.
  • DIRECT-FIT DESIGNá–áDirect-fit bolt-on replacement solution with OE-style hangers, brackets, routings and heat shields for easy installationáthatádoesn’t require specialized fabricationáand/or welding
  • KEEPS CHECK ENGINE LIGHT OFFáFOR EMISSIONS CODESá–áOE-style high-technologyáwashcoatáand optimaláprecious metal load delivers required reduction in tailpipe emissionsáto match vehicle application
  • STRONGáANDáDURABLEá–áFeatures thick OE-style flanges, hangersáandábrackets for strength andádurability
  • APPLICATION-ENGINEERED –áFeatures aluminized heat shields when originally equipped, to match OE design, protecting the undercarriage from heat created by the converter
  • BUY WITH CONFIDENCE — Backed by Walker’s structural integrity warranty
See More

MagnaFlow – Direct-Fit California Grade CARB Compliant Catalytic Converter (Part No.4561049)

Direct-Fit California Grade CARB Compliant Catalytic Converter

from

$1606.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 4561049. 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 2004 Cadillac CTS 3.2L. MagnaFlow 4561049 includes (4) Flat Washers, (2) Bolts, (2) Nuts, (1) Crush Ring Gasket, (1) Flange 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.

Product Features:
  • Your trusted source for CARB-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
  • OE-sized barbed exhaust hangers made from corrosion-resistant 410 stainless steel, designed to reduce noise and vibration
  • 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 HM Grade Federal / EPA Compliant Catalytic Converter (Part No.24931)

Direct-Fit HM Grade Federal / EPA Compliant Catalytic Converter

from

$539.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 24931. 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 2004-2009 Cadillac CTS 3.6L & 2005-2007 Cadillac CTS 2.8L. MagnaFlow 24931 includes (1) Donut Gasket, (1) Crush 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 Federal/EPA Emission systems.

Product Features:
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
  • 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.51573)

Direct-Fit OEM Grade Federal / EPA Compliant Catalytic Converter

from

$575.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 51573. 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 2013-2015 Cadillac ATS 2.0L & 2014-2015 Cadillac CTS 2.0L. MagnaFlow 51573 includes (2) Bolts and interchanges with OE parts 12653068, 12656409. 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:
  • Durable 308 stainless steel MIG welds
  • 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.49171)

Direct-Fit OEM Grade Federal / EPA Compliant Catalytic Converter

from

$484.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 49171. 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 49171 includes (4) Bolts, (1) Flange 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.

Product Features:
  • High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
  • 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

Walker – CalCat CARB Universal Catalytic Converter 2.5" Inlet (ID) 2.5" Outlet (ID) (Part No.84206)

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

from

$209.99
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
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

MagnaFlow – Direct-Fit California Grade CARB Compliant Catalytic Converter (Part No.5421173)

Direct-Fit California Grade CARB Compliant Catalytic Converter

from

$835.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 5421173. 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 2009-2015 Cadillac CTS 6.2L. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.

Product Features:
  • Your trusted source for CARB-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

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
See More

MagnaFlow – Universal HM Grade Federal / EPA Compliant Catalytic Converter (Part No.99204HM)

Universal HM Grade Federal / EPA Compliant Catalytic Converter

from

$179.99
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.

Product Features:
  • Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off
  • Compact, lightweight construction enables installation in confined areas, welding is required
  • High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
  • 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
See More

MagnaFlow – Direct-Fit OEM Grade Federal / EPA Compliant Catalytic Converter (Part No.21-408)

Direct-Fit OEM Grade Federal / EPA Compliant Catalytic Converter

from

$717.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-408. 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 21-408 includes (1) Flange Ring, (1) Flange Gasket, (2) Nuts, (2) Bolts and interchanges with OE parts 12656953, 12656955, 12670571, 12673998, 12679573, 19420222. 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:
  • High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
  • 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

Walker – Ultra EPA Direct Fit Catalytic Converter (Part No.14726)

Ultra EPA Direct Fit Catalytic Converter

from

$667.99
Designed to comply with EPA standards while delivering premium performance with assured compliance, Walker® Ultra® Direct-Fit Catalytic Converters provide premium performance and are available for import and domestic OBDII (1996 and newer) vehicles.

Product Features:
  • EPA COMPLIANT — For use on OBDII vehicles, 1996 and newer. Not legal for sale or use in CA, CO or NY. Legal in ME on EPA Federal Emission Equipped Vehicles only. Consult your state’s aftermarket converter regulations for details.
  • DIRECT-FIT DESIGNá–áDirect-fit bolt-on replacement solution with OE-style hangers, brackets, routings and heat shields for easy installationáthatádoesn’t require specialized fabricationáand/or welding
  • KEEPS CHECK ENGINE LIGHT OFFáFOR EMISSIONS CODESá–áOE-style high-technologyáwashcoatáand optimaláprecious metal load delivers required reduction in tailpipe emissionsáto match vehicle application
  • STRONGáANDáDURABLEá–áFeatures thick OE-style flanges, hangersáandábrackets for strength andádurability
  • APPLICATION-ENGINEERED –áFeatures aluminized heat shields when originally equipped, to match OE design, protecting the undercarriage from heat created by the converter
  • BUY WITH CONFIDENCE — Backed by Walker’s structural integrity warranty
See More

Walker – Ultra EPA Direct-Fit Catalytic Converter (Part No.52502)

Ultra EPA Direct-Fit Catalytic Converter

from

$751.99
Product Features:
  • EPA COMPLIANT – For use on OBDII vehicles, 1996 and newer. Not legal for sale or use in CA, CO & NY. Legal in ME on EPA Federal Emission Equipped Vehicles only. Consult your state’s aftermarket converter regulations for details.
  • DIRECT-FIT DESIGN – Direct-fit bolt-on replacement solution with OE-style hangers, brackets, routings and heat shields for easy installation that doesn’t require specialized fabrication and welding
  • KEEPS CHECK ENGINE LIGHT OFF FOR EMISSIONS CODES – OE-style high-technology wash coat and optimal precious metal load delivers required reduction in tailpipe emissions to match vehicle application
  • STRONG AND DURABLE – Features thick OE-style flanges, hangers and brackets for strength and durability
  • OE-STYLE DESIGN – Features aluminized heat shields when originally equipped, to match OE design, protecting the undercarriage from heat created by the converter
  • BUY WITH CONFIDENCE – Backed by Walker’s 25,000-mile/40,000-kilometer emissions and 50,000-mile/80,000-kilometer structural integrity limited warranty. Visit Walkerexhaust.com for details.
See More

MagnaFlow – Direct-Fit OEM Grade Federal / EPA Compliant Manifold Catalytic Converter (Part No.51547)

Direct-Fit OEM Grade Federal / EPA Compliant Manifold Catalytic Converter

from

$520.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Manifold Catalytic Converter 51547. 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 2010-2014 Cadillac CTS 3.0L & 2012-2019 Cadillac CTS 3.6L. MagnaFlow 51547 includes (2) Nuts, (1) Donut Gasket, (2) Bolts, (2) Flat Washers, (1) Flange Gasket and interchanges with OE parts 20943056, 22882837. 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
  • High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
  • Durable 308 stainless steel MIG welds
  • Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
  • Simplifies installation with essential gaskets and hardware being included in the box
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
See More

Walker – CalCat CARB Direct Fit Catalytic Converter (Part No.84682)

CalCat CARB Direct Fit Catalytic Converter

from

$838.99
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.

Product Features:
  • DIRECT-FIT DESIGN — Direct-fit bolt-on replacement solution with OE-style hangers, brackets, routings and heat shields for easy installation that doesn’t require specialized fabrication and/or welding
  • SUPERIOR TECHNOLOGY — Optimal high technology washcoat formulated to deliver superior performance (as compared to EPA-compliant converters)
  • SUPERIOR TECHNOLOGYá–áOptimal highátechnologyáwashcoatáformulatedáto deliver superior performance (as compared to EPA-compliantáconverters)
  • CONSISTENT PERFORMANCE — Utilizes a precise OE-style coating process to apply catalyst material to the substrate, providing consistent performance for assured emissions compliance
  • CONSISTENT PERFORMANCEá–áUtilizes a precise OE-style coating process to apply catalyst material to the substrate, providing consistent performance for assured emissions compliance
  • STRONG AND DURABLE — Features thick OE-style flanges, hangers and brackets for strength and stainless-steel body with aluminized pipe and heat shields for durability
  • STRONGáANDáDURABLEá–áFeatures thick OE-style flanges, hangersáandábrackets for strength and stainless-steel body with aluminized pipe and heat shields for durability
  • BUY WITH CONFIDENCE — Backed by Walker’s emissions and structural integrity warranty. Visit Walkerexhaust.com for details.
See More

Walker – CalCat CARB Universal Catalytic Converter (Part No.84615)

CalCat CARB Universal Catalytic Converter

from

$359.99
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:
  • SUPERIOR TECHNOLOGY — Optimal high technology washcoat formulated to deliver superior performance (as compared to EPA-compliant converters)
  • SUPERIOR TECHNOLOGYá–áOptimal highátechnologyáwashcoatáformulatedáto deliver superior performance (as compared to EPA-compliantáconverters)
  • CONSISTENT PERFORMANCE — Utilizes a precise OE-style coating process to apply catalyst material to the substrate, providing consistent performance for assured emissions compliance
  • CONSISTENT PERFORMANCEá–áUtilizes 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
  • DURABLEá–áFeatures 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 emissions and structural integrity warranty. Visit Walkerexhaust.com for details.
See More

Walker – Ultra EPA Direct-Fit Catalytic Converter – 2.24" Outlet (OD) (Part No.16685)

Ultra EPA Direct-Fit Catalytic Converter - 2.24" Outlet (OD)

from

$485.99
Product Features:
  • EPA COMPLIANT – For use on OBDII vehicles, 1996 and newer. Not legal for sale or use in CA, CO & NY. Legal in ME on EPA Federal Emission Equipped Vehicles only. Consult your state’s aftermarket converter regulations for details.
  • DIRECT-FIT DESIGN – Direct-fit bolt-on replacement solution with OE-style hangers, brackets, routings and heat shields for easy installation that doesn’t require specialized fabrication and welding
  • KEEPS CHECK ENGINE LIGHT OFF FOR EMISSIONS CODES – OE-style high-technology wash coat and optimal precious metal load delivers required reduction in tailpipe emissions to match vehicle application
  • STRONG AND DURABLE – Features thick OE-style flanges, hangers and brackets for strength and durability
  • OE-STYLE DESIGN – Features aluminized heat shields when originally equipped, to match OE design, protecting the undercarriage from heat created by the converter
  • BUY WITH CONFIDENCE – Backed by Walker’s 25,000-mile/40,000-kilometer emissions and 50,000-mile/80,000-kilometer structural integrity limited warranty. Visit Walkerexhaust.com for details.
See More

MagnaFlow – Universal OEM Grade Federal / EPA Compliant Catalytic Converter (Part No.51204)

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 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.

Product Features:
  • Compact, lightweight construction enables installation in confined areas, welding is required
  • Durable 308 stainless steel MIG welds
  • High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
  • Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
  • Compact, lightweight construction enables installation in confined areas, welding is required
See More

MagnaFlow – Direct-Fit OEM Grade Federal / EPA Compliant Catalytic Converter (Part No.49885)

Direct-Fit OEM Grade Federal / EPA Compliant Catalytic Converter

from

$566.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 49885. 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 2004-2009 Cadillac CTS 3.6L & 2005-2007 Cadillac CTS 2.8L. MagnaFlow 49885 includes (1) Crush Ring Gasket, (1) Donut 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.

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

Walker – CalCat CARB Universal Catalytic Converter (Part No.84683)

CalCat CARB Universal Catalytic Converter

from

$926.99
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.

Product Features:
  • DIRECT-FIT DESIGN — Direct-fit bolt-on replacement solution with OE-style hangers, brackets, routings and heat shields for easy installation that doesn’t require specialized fabrication and/or welding
  • SUPERIOR TECHNOLOGY — Optimal high technology washcoat formulated to deliver superior performance (as compared to EPA-compliant converters)
  • SUPERIOR TECHNOLOGYá–áOptimal highátechnologyáwashcoatáformulatedáto deliver superior performance (as compared to EPA-compliantáconverters)
  • CONSISTENT PERFORMANCE — Utilizes a precise OE-style coating process to apply catalyst material to the substrate, providing consistent performance for assured emissions compliance
  • CONSISTENT PERFORMANCEá–áUtilizes a precise OE-style coating process to apply catalyst material to the substrate, providing consistent performance for assured emissions compliance
  • STRONG AND DURABLE — Features thick OE-style flanges, hangers and brackets for strength and stainless-steel body with aluminized pipe and heat shields for durability
  • STRONGáANDáDURABLEá–áFeatures thick OE-style flanges, hangersáandábrackets for strength and stainless-steel body with aluminized pipe and heat shields for durability
  • BUY WITH CONFIDENCE — Backed by Walker’s emissions and structural integrity warranty. Visit Walkerexhaust.com for details.
See More

MagnaFlow – Direct-Fit OEM Grade Federal / EPA Compliant Catalytic Converter (Part No.49884)

Direct-Fit OEM Grade Federal / EPA Compliant Catalytic Converter

from

$573.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 49884. 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 2004-2009 Cadillac CTS 3.6L & 2005-2007 Cadillac CTS 2.8L. MagnaFlow 49884 includes (1) Crush Ring Gasket, (1) Donut 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.

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

Most Popular Catalytic Converter Gasket for 2012 Cadillac CTSs

Enhance your 2012 Cadillac CTS with this popular Catalytic Converter Gasket we have in stock, for $18.49.

Walker – Exhaust Pipe Flange Gasket (Part No.31379)

Exhaust Pipe Flange Gasket

from

$18.49
Complete your exhaust repair with Walker gaskets and flanges. Available in a variety of styles and sizes, they’re designed to work with OE exhaust components and Walker aftermarket replacement parts.

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

Best-Selling 2012 Cadillac CTS Catalytic Converters

Upgrade your CTS with one of our 15 best-selling 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
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

MagnaFlow – Universal OEM Grade Federal / EPA Compliant Catalytic Converter (Part No.51205)

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 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.

Product Features:
  • Compact, lightweight construction enables installation in confined areas, welding is required
  • 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
  • Compact, lightweight construction enables installation in confined areas, welding is required
  • Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off
See More

MagnaFlow – Direct-Fit California Grade CARB Compliant Catalytic Converter (Part No.557427)

Direct-Fit California Grade CARB Compliant Catalytic Converter

from

$1031.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 557427. 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 2010-2014 Cadillac CTS 3.0L. MagnaFlow 557427 includes (1) Torca Clamp. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.

Product Features:
  • High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
  • Your trusted source for CARB-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
  • OE-sized barbed exhaust hangers made from corrosion-resistant 410 stainless steel, designed to reduce noise and vibration
  • 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 California Grade CARB Compliant Catalytic Converter (Part No.557428)

Direct-Fit California Grade CARB Compliant Catalytic Converter

from

$1026.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 557428. 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 2010-2014 Cadillac CTS 3.0L. MagnaFlow 557428 includes (1) Torca Clamp. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.

Product Features:
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
  • Your trusted source for CARB-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
  • OE-sized barbed exhaust hangers made from corrosion-resistant 410 stainless steel, designed to reduce noise and vibration
  • 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 California Grade CARB Compliant Catalytic Converter (Part No.5421173)

Direct-Fit California Grade CARB Compliant Catalytic Converter

from

$835.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 5421173. 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 2009-2015 Cadillac CTS 6.2L. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.

Product Features:
  • Your trusted source for CARB-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.21-179)

Direct-Fit OEM Grade Federal / EPA Compliant Catalytic Converter

from

$675.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-179. 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 2009-2015 Cadillac CTS 6.2L. MagnaFlow 21-179 includes (1) Donut Gasket, (2) Bolts, (2) Nuts, (1) Crush Ring Gasket and interchanges with OE parts 22882840, 22940824, 25813641. 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

Walker – Ultra EPA Direct Fit Catalytic Converter (Part No.14726)

Ultra EPA Direct Fit Catalytic Converter

from

$667.99
Designed to comply with EPA standards while delivering premium performance with assured compliance, Walker® Ultra® Direct-Fit Catalytic Converters provide premium performance and are available for import and domestic OBDII (1996 and newer) vehicles.

Product Features:
  • EPA COMPLIANT — For use on OBDII vehicles, 1996 and newer. Not legal for sale or use in CA, CO or NY. Legal in ME on EPA Federal Emission Equipped Vehicles only. Consult your state’s aftermarket converter regulations for details.
  • DIRECT-FIT DESIGNá–áDirect-fit bolt-on replacement solution with OE-style hangers, brackets, routings and heat shields for easy installationáthatádoesn’t require specialized fabricationáand/or welding
  • KEEPS CHECK ENGINE LIGHT OFFáFOR EMISSIONS CODESá–áOE-style high-technologyáwashcoatáand optimaláprecious metal load delivers required reduction in tailpipe emissionsáto match vehicle application
  • STRONGáANDáDURABLEá–áFeatures thick OE-style flanges, hangersáandábrackets for strength andádurability
  • APPLICATION-ENGINEERED –áFeatures aluminized heat shields when originally equipped, to match OE design, protecting the undercarriage from heat created by the converter
  • BUY WITH CONFIDENCE — Backed by Walker’s structural integrity warranty
See More

MagnaFlow – Direct-Fit OEM Grade Federal / EPA Compliant Catalytic Converter (Part No.49172)

Direct-Fit OEM Grade Federal / EPA Compliant Catalytic Converter

from

$649.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 49172. 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 2009-2015 Cadillac CTS 6.2L. 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

Walker – Ultra EPA Direct Fit Catalytic Converter (Part No.14725)

Ultra EPA Direct Fit Catalytic Converter

from

$637.99
Designed to comply with EPA standards while delivering premium performance with assured compliance, Walker® Ultra® Direct-Fit Catalytic Converters provide premium performance and are available for import and domestic OBDII (1996 and newer) vehicles.

Product Features:
  • EPA COMPLIANT — For use on OBDII vehicles, 1996 and newer. Not legal for sale or use in CA, CO or NY. Legal in ME on EPA Federal Emission Equipped Vehicles only. Consult your state’s aftermarket converter regulations for details.
  • DIRECT-FIT DESIGNá–áDirect-fit bolt-on replacement solution with OE-style hangers, brackets, routings and heat shields for easy installationáthatádoesn’t require specialized fabricationáand/or welding
  • KEEPS CHECK ENGINE LIGHT OFFáFOR EMISSIONS CODESá–áOE-style high-technologyáwashcoatáand optimaláprecious metal load delivers required reduction in tailpipe emissionsáto match vehicle application
  • STRONGáANDáDURABLEá–áFeatures thick OE-style flanges, hangersáandábrackets for strength andádurability
  • APPLICATION-ENGINEERED –áFeatures aluminized heat shields when originally equipped, to match OE design, protecting the undercarriage from heat created by the converter
  • BUY WITH CONFIDENCE — Backed by Walker’s structural integrity warranty
See More

MagnaFlow – Direct-Fit OEM Grade Federal / EPA Compliant Manifold Catalytic Converter (Part No.51548)

Direct-Fit OEM Grade Federal / EPA Compliant Manifold Catalytic Converter

from

$535.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Manifold Catalytic Converter 51548. 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 2010-2014 Cadillac CTS 3.0L & 2012-2019 Cadillac CTS 3.6L. MagnaFlow 51548 includes (2) Flat Washers, (1) Donut Gasket, (2) Bolts, (1) Flange Gasket, (2) Nuts and interchanges with OE parts 20943055, 22882836. 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:
  • High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
  • Simplifies installation with essential gaskets and hardware being included in the box
  • 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
  • Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
  • Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
See More

MagnaFlow – Direct-Fit OEM Grade Federal / EPA Compliant Manifold Catalytic Converter (Part No.51547)

Direct-Fit OEM Grade Federal / EPA Compliant Manifold Catalytic Converter

from

$520.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Manifold Catalytic Converter 51547. 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 2010-2014 Cadillac CTS 3.0L & 2012-2019 Cadillac CTS 3.6L. MagnaFlow 51547 includes (2) Nuts, (1) Donut Gasket, (2) Bolts, (2) Flat Washers, (1) Flange Gasket and interchanges with OE parts 20943056, 22882837. 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
  • High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
  • Durable 308 stainless steel MIG welds
  • Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
  • Simplifies installation with essential gaskets and hardware being included in the box
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
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Walker – Ultra EPA Direct Fit Catalytic Converter, 3.111" Inlet (ID) 2.25" Outlet (OD) (Part No.75510)

Ultra EPA Direct Fit Catalytic Converter, 3.111" Inlet (ID) 2.25" Outlet (OD)

from

$454.99
Designed to comply with EPA standards while delivering premium performance with assured compliance, Walker® Ultra® Direct-Fit Catalytic Converters provide premium performance and are available for import and domestic OBDII (1996 and newer) vehicles.

Product Features:
  • EPA COMPLIANT — For use on OBDII vehicles, 1996 and newer. Not legal for sale or use in CA, CO or NY. Legal in ME on EPA Federal Emission Equipped Vehicles only. Consult your state’s aftermarket converter regulations for details.
  • DIRECT-FIT DESIGNá–áDirect-fit bolt-on replacement solution with OE-style hangers, brackets, routings and heat shields for easy installationáthatádoesn’t require specialized fabricationáand/or welding
  • KEEPS CHECK ENGINE LIGHT OFFáFOR EMISSIONS CODESá–áOE-style high-technologyáwashcoatáand optimaláprecious metal load delivers required reduction in tailpipe emissionsáto match vehicle application
  • STRONGáANDáDURABLEá–áFeatures thick OE-style flanges, hangersáandábrackets for strength andádurability
  • APPLICATION-ENGINEERED –áFeatures aluminized heat shields when originally equipped, to match OE design, protecting the undercarriage from heat created by the converter
  • BUY WITH CONFIDENCE — Backed by Walker’s structural integrity warranty
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Walker – Ultra EPA Direct Fit Catalytic Converter, 3.111" Inlet (ID) 2.25" Outlet (OD) (Part No.75511)

Ultra EPA Direct Fit Catalytic Converter, 3.111" Inlet (ID) 2.25" Outlet (OD)

from

$364.99
Designed to comply with EPA standards while delivering premium performance with assured compliance, Walker® Ultra® Direct-Fit Catalytic Converters provide premium performance and are available for import and domestic OBDII (1996 and newer) vehicles.

Product Features:
  • EPA COMPLIANT — For use on OBDII vehicles, 1996 and newer. Not legal for sale or use in CA, CO or NY. Legal in ME on EPA Federal Emission Equipped Vehicles only. Consult your state’s aftermarket converter regulations for details.
  • DIRECT-FIT DESIGNá–áDirect-fit bolt-on replacement solution with OE-style hangers, brackets, routings and heat shields for easy installationáthatádoesn’t require specialized fabricationáand/or welding
  • KEEPS CHECK ENGINE LIGHT OFFáFOR EMISSIONS CODESá–áOE-style high-technologyáwashcoatáand optimaláprecious metal load delivers required reduction in tailpipe emissionsáto match vehicle application
  • STRONGáANDáDURABLEá–áFeatures thick OE-style flanges, hangersáandábrackets for strength andádurability
  • APPLICATION-ENGINEERED –áFeatures aluminized heat shields when originally equipped, to match OE design, protecting the undercarriage from heat created by the converter
  • BUY WITH CONFIDENCE — Backed by Walker’s structural integrity warranty
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Walker – CalCat CARB Universal Catalytic Converter 2.25" Inlet (ID) 2.25" Outlet (ID) (Part No.84205)

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

from

$206.99
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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FAQs for 2012 Cadillac CTS Catalytic Converters

What are the best-selling Catalytic Converters for 2012 Cadillac CTSs?

Out of 16 Catalytic Converters that fit 2012 Cadillac CTSs, the following parts are the top sellers:

What’s the price range for 2012 Cadillac CTS Catalytic Converters?

The prices of Catalytic Converters for the 2012 Cadillac CTS range from $18.49 up to $1,031.99 for the most premium parts.

What is the average price of a Catalytic Converter for a 2012 Cadillac CTS?

The average price for Catalytic Converters for the 2012 Cadillac CTS is $482.56. 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 Cadillac CTS model years?

Yes, we carry Catalytic Converters for 15 model years of Cadillac CTSs between 2003 and 2019. The following model years are the most popular for Catalytic Converter purchases: 2019, 2018, 2017, 2016, 2015, 2014, 2013, 2011, and 2010.

What are the cheapest Catalytic Converters for my 2012 Cadillac CTS?

Does Advance Auto Parts sell Catalytic Converters for any other 2012 Cadillac models?

Yes. We stock Catalytic Converters for 3 other popular 2012 Cadillac models. Some of the most popular are 2012 Escalade Catalytic Converters, 2012 Escalade ESV Catalytic Converters, 2012 Escalade EXT Catalytic Converters, and 2012 SRX Catalytic Converters.

What types of Catalytic Converters do you sell for my 2012 Cadillac CTS?

As of 3/1/26, these are some of the most in-demand types of Catalytic Converters for a 2012 Cadillac CTS:

Can I get help with 2012 Cadillac CTS Catalytic Converter orders?

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

What is your return policy for Cadillac CTS Catalytic Converters?

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