2019 Acura RLX Catalytic Converters

Keep Your 2019 Acura RLX 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 2019 Acura RLX 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 Heat Shield Bolt Sets. 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 2019 Acura RLX Catalytic Converter at Advance Auto Parts is around $103.52, with a range that starts at $14.29 and goes up to $281.99. With 2 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like Heat Shield Bolt Set and OEM Grade Federal / EPA Compliant Universal Catalytic Converter start at just $14.29 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 2019 Acura RLX in peak condition, inside and out.

Essential 2019 Acura RLX Catalytic Converters

Dorman – Help – Heat Shield Bolt Set (Part No.03294CD)

Heat Shield Bolt Set

from

$14.29
The catalytic converter heat shield bolt is essential for keeping heat from the exhaust system, away from adjacent car parts and flammable materials positioned under the vehicle. Our direct replacement heat shield bolt secures and holds the catalytic converter heat shield in place.

Product Features:
  • Direct replacement ensures a proper fit every time.
  • For extra protection our Heat Shield Bolts are galvanized for rust-resistance
  • Easy to install – No special tools required during installation
  • Testing on this part includes salt water corrosion and hardness testing for conformance to product standards and quality
See More

Walker – CalCat CARB Direct Fit Catalytic Converter (Part No.84161)

CalCat CARB Direct Fit Catalytic Converter

from

$996.99
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.
  • 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 washcoat 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
See More

MagnaFlow – OEM Grade Federal / EPA Compliant Manifold Catalytic Converter (Part No.51898)

OEM Grade Federal / EPA Compliant Manifold Catalytic Converter

from

$525.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 51898. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun body 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 spun body 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. Designed to fit the 2009-2020 Honda Pilot, 2008-2019 Honda Odyssey, and more, this direct-fit catalytic converter also interchanges with OE parts 18280-5MJ-A00 and 18280-RLV-A00, among others. The included gaskets & hardware reduce the possibility of a leaking seal while avoiding the need to reuse corroded factory parts for installation. 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.
  • Simplifies installation with essential gaskets and hardware being included in the box.
  • Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last.
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

$265.99
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.
  • 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 washcoat 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
See More

Dorman – Manifold Converter – Not Carb Compliant – Not For Sale – NY – CA – ME (Part No.674-145)

Manifold Converter - Not Carb Compliant - Not For Sale - NY - CA - ME

from

$526.99
This catalytic converter with integrated exhaust manifold – a.k.a. manifold converter – is precision-engineered to match the original equipment on specific vehicle years, makes and models for a reliable replacement.

Product Features:
  • Direct replacement – this manifold converter is designed to match the fit and performance of the original equipment on specific vehicles.
  • Convenient kit – includes gaskets and downpipe hardware to simplify installation.
  • Durable construction -manufactured within strict tolerances for reliable longevity
  • Trustworthy value – backed by team of engineers and quality control experts in the United States
See More

MagnaFlow – OEM Grade Federal / EPA Compliant Manifold Catalytic Converter (Part No.51893)

OEM Grade Federal / EPA Compliant Manifold Catalytic Converter

from

$530.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 51893. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun body 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 spun body 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. Designed to fit the 2009-2020 Honda Pilot, 2008-2019 Honda Odyssey, and more, this direct-fit catalytic converter also interchanges with OE parts 18180-5MJ-A00 and 18180-RLV-A00, among others. The included gaskets & hardware reduce the possibility of a leaking seal while avoiding the need to reuse corroded factory parts for installation. 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.
  • Simplifies installation with essential gaskets and hardware being included in the box.
  • Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last.
See More

Dorman – Manifold Converter – Not Carb Compliant – Not For Sale – NY – CA – ME (Part No.674-146)

Manifold Converter - Not Carb Compliant - Not For Sale - NY - CA - ME

from

$485.99
This catalytic converter with integrated exhaust manifold – a.k.a. manifold converter – is precision-engineered to match the original equipment on specific vehicle years, makes and models for a reliable replacement.

Product Features:
  • Direct replacement – this manifold converter is designed to match the fit and performance of the original equipment on specific vehicles.
  • Convenient kit – includes gaskets and downpipe hardware to simplify installation.
  • Durable construction -manufactured within strict tolerances for reliable longevity
  • Trustworthy value – backed by team of engineers and quality control experts in the United States
See More

MagnaFlow – OEM Grade Federal / EPA Compliant Universal Catalytic Converter (Part No.51656)

OEM Grade Federal / EPA Compliant Universal Catalytic Converter

from

$281.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51656. The Universal design allows the part to fit a wide array of vehicles (cutting and welding required), and the stainless steel construction of this spun body catalytic converter is highly resistant to corrosion. The single laser fusion weld of the spun body 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 California or 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.
  • Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last.
See More

Walker – CalCat CARB Direct Fit Catalytic Converter (Part No.84162)

CalCat CARB Direct Fit Catalytic Converter

from

$986.99
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.
  • 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 washcoat 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
See More

Most Popular Catalytic Converter for 2019 Acura RLXes

Enhance your 2019 Acura RLX with this popular Catalytic Converter we have in stock, for $281.99.

MagnaFlow – OEM Grade Federal / EPA Compliant Universal Catalytic Converter (Part No.51656)

OEM Grade Federal / EPA Compliant Universal Catalytic Converter

from

$281.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51656. The Universal design allows the part to fit a wide array of vehicles (cutting and welding required), and the stainless steel construction of this spun body catalytic converter is highly resistant to corrosion. The single laser fusion weld of the spun body 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 California or 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.
  • Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last.
See More

Best-Selling 2019 Acura RLX Catalytic Converter Heat Shield Bolt Set

Upgrade your RLX with our best-selling Catalytic Converter Heat Shield Bolt Set.

Dorman – Help – Heat Shield Bolt Set (Part No.03294CD)

Heat Shield Bolt Set

from

$14.29
The catalytic converter heat shield bolt is essential for keeping heat from the exhaust system, away from adjacent car parts and flammable materials positioned under the vehicle. Our direct replacement heat shield bolt secures and holds the catalytic converter heat shield in place.

Product Features:
  • Direct replacement ensures a proper fit every time.
  • For extra protection our Heat Shield Bolts are galvanized for rust-resistance
  • Easy to install – No special tools required during installation
  • Testing on this part includes salt water corrosion and hardness testing for conformance to product standards and quality
See More

FAQs for 2019 Acura RLX Catalytic Converters

What are the best-selling Catalytic Converters for 2019 Acura RLXes?

Out of 2 Catalytic Converters that fit 2019 Acura RLXes, the following parts are the top sellers:

What’s the price range for 2019 Acura RLX Catalytic Converters?

The prices of Catalytic Converters for the 2019 Acura RLX range from $14.29 up to $281.99 for the most premium parts.

What is the average price of a Catalytic Converters Catalytic Converter for a 2019 Acura RLX?

The average price for Catalytic Converters for the 2019 Acura RLX is $103.52. 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 Acura RLX model years?

Yes, we carry Catalytic Converters for 5 model years of Acura RLXes between 2014 and 2020. The following model years are the most popular for Catalytic Converter purchases: 2020, 2018, 2017, 2016, 2015, and 2014.

What are the cheapest Catalytic Converters for my 2019 Acura RLX?

The cheapest 2019 Acura RLX Catalytic Converters we carry are:

Does Advance Auto Parts sell Catalytic Converters for any other 2019 Acura models?

Yes. We stock Catalytic Converters for 4 other popular 2019 Acura models. Some of the most popular are 2019 MDX Catalytic Converters, 2019 NSX Catalytic Converters, 2019 TLX Catalytic Converters, 2019 ILX Catalytic Converters, and 2019 RDX Catalytic Converters.

What types of Catalytic Converters do you sell for my 2019 Acura RLX?

As of 4/10/25, these are some of the most in-demand types of Catalytic Converters for a 2019 Acura RLX:

Can I get help with 2019 Acura RLX Catalytic Converter orders?

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

What is your return policy for Acura RLX Catalytic Converters?

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