Best Car Exhaust Catalytic Converters of 2026

Robert Reyes Avatar
Robert Reyes
Last Updated: Jan 9, 2026

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Car exhaust catalytic converters are devices that are installed in the exhaust systems of vehicles to reduce the amount of harmful pollutants emitted into the environment. They work by converting toxic gases, such as carbon monoxide and nitrogen oxides, into less harmful substances like carbon dioxide and water vapor. These converters are an important component of modern vehicles, as they help to reduce air pollution and improve air quality. They are required by law in many countries, including the United States, and are available for a wide range of vehicle models and types.

At a Glance: Our Top Picks

Cataclean Fuel and Exhaust System Cleaner 16oz 2-Pack Cover #TOP 1
Cataclean Fuel and Exhaust System Cleaner 16oz 2-Pack
ftb score rating icon 9.8
NewYall 1.6L Exhaust Manifold Catalytic Converter for Kia and Hyundai Cover #TOP 2
NewYall 1.6L Exhaust Manifold Catalytic Converter for Kia and Hyundai
ftb score rating icon 9.7
A-Premium Catalytic Converter for Nissan Altima Cover #TOP 3
A-Premium Catalytic Converter for Nissan Altima
ftb score rating icon 9.5

Top 10 Car Exhaust Catalytic Converters

#TOP 1

Cataclean Fuel and Exhaust System Cleaner 16oz 2-Pack

120007-2PK
Cataclean Fuel and Exhaust System Cleaner 16oz 2-Pack Cover
Cataclean (120007-2PK) Fuel and Exhaust System Cleaner - 16 fl. oz., (Pack of 2)

The Cataclean Fuel Cleaner helps you reduce harmful hydrocarbon emissions by up to half, making your vehicle more eco-friendly. It works to clear carbon buildup from key parts like your catalytic converter, oxygen sensors, fuel injectors, and cylinder heads, which can lead to better fuel efficiency. Using this cleaner can also improve your car’s overall performance, helping with common issues like power loss, hesitation, rough idling, hard starts, and reduced fuel economy. Plus, it’s safe to use in gasoline, diesel, hybrid, and flex-fuel vehicles without changing your fuel’s composition, giving you a convenient and effective way to maintain your engine.

What We Like
Reduces hydrocarbon emissions
Clears carbon buildup
Improves fuel efficiency
Enhances vehicle performance
Safe for multiple fuel types
#TOP 2

NewYall 1.6L Exhaust Manifold Catalytic Converter for Kia and Hyundai

285l0-2BEF1
NewYall 1.6L Exhaust Manifold Catalytic Converter for Kia and Hyundai Cover
NewYall 1.6L Exhaust Manifold Catalytic Converter for Kia Soul 2012-2016, Rio 2012-2017, Hyundai Accent 2011-2017, Veloster 2012-2017

The NewYall 1.6L Catalytic Converter is designed specifically for certain Kia and Hyundai models, including the Kia Soul (2012-2016) and Rio (2012-2017), as well as the Hyundai Accent (2011-2017) and Veloster (2012-2017). This part fits vehicles with a 1.6L L4 engine, ensuring compatibility and optimal performance. By choosing this converter, you benefit from a part tailored to your car’s engine size and model years, which can improve exhaust efficiency and help reduce harmful emissions. It's a reliable option if you need to replace your catalytic converter with one made for your vehicle’s exact specifications.

What We Like
Vehicle-specific fit
1.6L engine compatibility
Reduces harmful emissions
Supports multiple Kia and Hyundai models
#TOP 3

A-Premium Catalytic Converter for Nissan Altima

APCCT203
A-Premium Catalytic Converter for Nissan Altima Cover
A-Premium Front Exhaust Manifold Catalytic Converter W/Gasket Kit - Compatible with Nissan Altima 2007, 2008, 2009, 2010, 2011, 2012, 2013 L4 2.5L - Replace# 14002-JA01E - E.P.A. Compliant

The A-Premium Catalytic Converter is designed specifically for Nissan Altima models from 2007 to 2013 with a 2.5L engine. Its compatibility ensures a perfect fit, making installation straightforward for you. With multiple reference numbers, this converter is versatile and meets various requirements. It is crafted from stainless steel, offering durability and resistance to corrosion, which means you can rely on it for long-lasting performance. Additionally, it comes with a gasket and bolts, saving you time and effort during setup. Enjoy peace of mind with this E.P.A. compliant option that adheres to federal emissions standards.

What We Like
Vehicle compatibility
Durable stainless steel
Includes gasket and bolts
E.P.A. compliant
#TOP 4

Dylannet 2.5" Universal Weld-on Catalytic Converter

2.5 inch 2pcs
Dylannet 2.5" Universal Weld-on Catalytic Converter Cover
Dylannet 2.5" Inlet/Outlet Automobile Weld-on Catalytic Converter, Universal High Flow Front Cat Convertor Direct-Fit with Heat Shield and O2 Port Catalytic Convert (EPA Compliant) (2.5" 2PCS)

The Dylannet Weld-on Cat Converter is designed to help if your car suffers from increased fuel use, engine shaking, or reduced power. It also addresses issues like poor scheduling and bad odors from the exhaust. This converter features a 2.5-inch inlet and outlet with a total length of 13 inches, making it suitable for many vehicles, but be sure to check compatibility first. Made from high-quality stainless steel, it improves exhaust flow and boosts engine performance by increasing oxygen supply. This product is built to last and withstand tough conditions, giving you a reliable upgrade for your vehicle’s emissions system.

What We Like
Universal fit
Improves exhaust flow
Durable stainless steel
Reduces engine issues
Enhances engine power
#TOP 5

FOMIUZY High Flow Front Catalytic Converter Kit for Chevy Equinox GMC Terrain Captiva Sport 2.4L

2010-2014 Equinox
2010-2014 Front
FOMIUZY High Flow Front Catalytic Converter Kit for Chevy Equinox GMC Terrain Captiva Sport 2.4L Cover
FOMIUZY High Flow Front Catalytic Converter Kit Direct-Fit Chevy Equinox GMC Terrain 2010 2011 2012 2013 2014 Captiva Sport 2012 2013 2014 2015 2.4L

The FOMIUZY Catalytic Converter Kit is designed to meet strict EPA and OBD3 standards, ensuring your vehicle stays environmentally friendly. It’s a direct replacement for models like the Chevy Equinox and GMC Terrain, making it easy for you to fix issues like the P0420 engine code or a stolen catalytic converter. Constructed with durable stainless steel and aluminized pipes, this kit resists rust and lasts longer. The advanced ceramic carrier inside boosts airflow and surface area, helping your engine run more efficiently and improving fuel economy. Overall, it restores your car’s performance and reduces harmful emissions for a smoother drive.

What We Like
EPA and OBD3 compliant
Direct fit replacement
Durable stainless steel body
Improved airflow and fuel economy
#TOP 6

ASOPARTS 2.5" Universal Catalytic Converter

2.5"- for Universal
1 pack
2.5 Inch
ASOPARTS 2.5" Universal Catalytic Converter Cover
ASOPARTS 2.5" Universal Catalytic Converter, 2.5" Inlet/Outle Cat Converter with Heat Shield and O2 Port

The ASOPARTS Universal Cat Converter is designed to fit vehicles with a 2.5-inch outer diameter exhaust pipe, ensuring a perfect match for your car. Its direct replacement feature makes installation straightforward, saving you time and hassle. Made from durable stainless steel, this converter is built to resist heat, rust, and corrosion, ensuring longevity even in tough conditions. Additionally, it’s factory tested for compatibility, meaning you can install it with confidence. You’ll also enjoy peace of mind with the included 1-Year Warranty, providing support in case of any product issues.

What We Like
Universal fit for 2.5" pipes
Durable stainless steel construction
Easy installation process
1-Year Warranty included
#TOP 7

FOMIUZY High Flow Front Catalytic Converter Kit

wqpf Altima 2007-2013
Front
FOMIUZY High Flow Front Catalytic Converter Kit Cover
FOMIUZY High Flow Front Catalytic Converter Kit Direct-Fit Nissan Altima 2007 2008 2009 2010 2011 2012 2013 2.5L Replaces 674-933 140E2-ZX31E(EPA Compliant)

FOMIUZY Catalytic Converter Kit is a high-quality, direct-fit replacement for 2007-2013 Nissan Altima 2.5L. It is designed to solve common issues such as P0420 code and stolen catalytic converter. Made from stainless steel, the kit ensures excellent oxygen storage capacity and long service life. Its double-layer high temperature resistant ceramic carrier improves power and fuel economy. With strict production procedures, this catalytic converter complies with EPA and Obd3 standards. Not available in California, Colorado, New York, and Maine due to emission standards. Buy with confidence as it comes with a lifetime warranty, saving you money and providing peace of mind.

What We Like
Direct Replacement
High Quality
Excellent Clean Air Performance
#TOP 8

FOMIUZY 2.5 Inch High Flow Front Catalytic Converter

2.5 wqpf
1 Pack
2.5 Inch
FOMIUZY 2.5 Inch High Flow Front Catalytic Converter Cover
FOMIUZY 2.5 Inch Inlet/Outlet Universal High Flow Front Catalytic Converter Direct-Fit with O2 Port (EPA Compliant)

The FOMIUZY High Flow Catalytic Converter is designed as a direct replacement to fix issues like the P0420 engine code or a stolen catalytic converter, helping you restore your vehicle's performance and reduce exhaust noise. Made with a stainless steel body and high-quality aluminized pipes, it resists rust and ensures a long lifespan, so you can count on durability. Its double-layer ceramic carrier improves exhaust flow and surface area, which can boost your car’s power and fuel efficiency. This converter meets EPA and OBD3 standards, giving you peace of mind about emissions compliance, though it’s not sold in some states with stricter rules.

What We Like
Direct replacement fit
Rust-resistant stainless steel
Improved exhaust flow
EPA and OBD3 compliant
#TOP 9

MOCW 2.5 Inch High Flow Catalytic Converter

US-MOCW1101
MOCW 2.5 Inch High Flow Catalytic Converter Cover
MOCW 2.5 Inch Inlet Outlet Catalytic Converter Universal High Flow Front Catalytic Converter Direct Replacement with O2 Port (EPA Compliant), Stainless Steel, 2 Pcs

The MOCW High Flow Converter is designed to fit vehicles with a 2.5-inch exhaust pipe, making it a versatile choice for many models. It meets strict EPA standards, ensuring it is legal for use on vehicles built to federal requirements, though it is not suitable for states like California or New York with stricter rules. Made from durable 409 stainless steel, this converter offers long-lasting performance and comes with a 5-year or 50,000-mile warranty for peace of mind. Installation is straightforward as a direct replacement, but you may need professional help for cutting or welding to ensure a perfect fit.

What We Like
EPA compliant for federal vehicles
High-quality 409 stainless steel
Universal 2.5-inch fit
5-year/50,000-mile warranty
Direct replacement design
#TOP 10

FOMIUZY Front Catalytic Converter Kit for Chevy Silverado GMC Sierra 1500

Cadillac catalytic
FOMIUZY Front Catalytic Converter Kit for Chevy Silverado GMC Sierra 1500 Cover
FOMIUZY Front Catalytic Converter Kit Direct-Fit Chevy Silverado GMC Sierra 1500 1999 2000 2001 2002 2003 2004 2005 2006 Avalanche Suburban Tahoe Yukon XL Cadillac Escalade 4.3L 4.8L 5.3L

The FOMIUZY Catalytic Converter is designed to meet strict EPA and OBD2 standards, ensuring your vehicle stays environmentally compliant and reduces harmful emissions. If your engine shows a P0420 error code or your catalytic converter has been stolen, this direct-fit replacement is an easy fix that restores your car’s exhaust system and reduces noise. Made with durable stainless steel and aluminized pipes, it resists rust and lasts longer. The double-layer ceramic carrier enhances exhaust flow, improving your engine’s power and fuel efficiency. This converter helps keep your vehicle running smoothly and cleanly, giving you a better driving experience.

What We Like
EPA and OBD2 compliant
Direct-fit replacement
Durable stainless steel body
Improved exhaust flow
Boosts power and fuel economy
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What does a catalytic converter do in a car exhaust?

A catalytic converter is a unit that fits into the front part of exhaust system of a vehicle, close to the engine, to reduce the emission of gaseous pollutants, such as carbon monoxide (CO), nitrogen oxides (NOx) and hydrocarbons (HCs).

2. Is a catalytic converter necessary in a car exhaust system?

Without catalytic converters, vehicles release hydrocarbons, carbon monoxide, and nitrogen oxide. These gases are the largest source of ground level ozone, which causes smog and is harmful to plant life.

3. Why are catalytic converters being stolen so much?

Catalytic converters contain numerous rare earth metals, such as platinum, palladium, or rhodium, according to the NICB. Those rare earth metals are the key driver in theft, said David Glawe, the president and CEO of the National Insurance Crime Bureau told the PBS NewsHour's Nicole Ellis.

4. Do all exhausts have catalytic converters?

A vehicle will have a catalytic converter for each exhaust pipe—so while most cars will just need one, dual exhaust vehicles will need two. Catalytic converters became the norm after 1975, and most dual exhaust vehicles have V8 engines.

Editor's Notes

During our car exhaust catalytic converter research, we found 24 car exhaust catalytic converter products and shortlisted 10 quality products. We collected and analyzed 13,154 customer reviews through our big data system to write the car exhaust catalytic converters list. We found that most customers choose car exhaust catalytic converters with an average price of $116.62.

The car exhaust catalytic converters are available for purchase. We have researched hundreds of brands and picked the top brands of car exhaust catalytic converters, including Cataclean, NewYall, A-Premium, Dylannet, FOMIUZY. The seller of top 1 product has received honest feedback from 672 consumers with an average rating of 4.8.

Written by
Robert Reyes Avatar

Robert Reyes is a dedicated writer from San Francisco with a bachelor of degree in mechanics and a bachelor of degree in marketing. He focuses on making some complicated topics simple and enjoys explaining complex and technical things in an easy-to-understand way.