Looking for the best OBD II compliant catalytic converters? We’ve curated a list of top 10 options that are EPA compliant, easy to install, and designed to reduce emissions while keeping your car running smoothly.
Finding the right catalytic converter can be tricky, especially with so many options out there. But don’t worry, we’ve got you covered with the best OBD II compliant catalytic converters that meet strict standards and fit your vehicle perfectly.
These converters are EPA compliant, ensuring they’re legal and efficient. They’re designed to reduce emissions while keeping your car running smoothly. Plus, they’re easy to install, saving you time and hassle.
Direct-fit designs, durable materials, and high-flow performance make these converters stand out. Ready to upgrade your vehicle? Let’s dive in!
List of Top 10 OBD II Compliant Catalytic Converters
| Image | Title | Best For | Price |
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Catalytic Converter, QKVBKAU Direct-Fit EPA & CARB Compliant for Hyundai Sonata, for Kia Forte, Optima & More | Catalytic Convertor Replaces 16648, 289602G540, 289602G710 | OBD II & High-Flow Design |
This catalytic converter is perfect for Hyundai and Kia owners who need a reliable, direct-fit replacement. It’s EPA and CARB-compliant, ensuring legal use in all 50 states, including California. |
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FortunaFlow Catalytic Converter Compatible with Honda Civic LX/HX/DX/CX 1996 1997 1998 1999 2000,Del Sol 1996 1997 1.6L L4 Front Position Replace 642597, 674439(EPA Compliant high flow standard) |
This FortunaFlow Catalytic Converter is perfect for Honda Civic and Del Sol owners who need a reliable, EPA-compliant replacement. It’s ideal for fixing P0420 or P0430 codes and passing OBD-II tests without hassle. |
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KAX 1PC High Flow Catalytic Converter Compatible with 2012-2019 Soul 1.6L, 2012-2017 Accen-t, 2012-2017 Rio Direct-Fit Stainless Steel Catalyst Convertor Replace 16681, 642036, 41068,EPA Compliant |
This KAX High Flow Catalytic Converter is perfect for car owners who need a reliable replacement for their 2012-2019 Kia Soul 1.6L, 2012-2017 Hyundai Accent, or 2012-2017 Rio. It’s easy to install and built to last, making it ideal for those looking to improve power and fuel economy without hassle. |
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KAC 2″ Universal Catalytic Converter, Catalytic Convertor with shield, 93241,53004 Stainless Steel Automotive Replacement Catalytic Converter 2PCS(EPA Complaint) |
This KAC 2″ Universal Catalytic Converter is perfect for car owners who want a reliable, EPA-compliant replacement. It’s easy to install and works well for most vehicles, except in California and New York. |
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Catalytic Converter, QKVBKAU for Kia Optima 2.4L L4 | EPA Compliant Replacement | OBD II & High Flow Design | catalytic convertor Replaces OEM# 674-128, 10H56963, 48767736KA |
This catalytic converter is perfect for Kia Optima owners with a 2.4L L4 engine (2009-2015) who need a reliable replacement that meets EPA standards. It’s not for CARB states, so check your local laws before buying. |
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JT Exhaust Catalytic Converter Compatible with Hyundai Elantra 2011 2012 2013 1.8L, Kia Forte 2014-2016 2.0L (EPA Compliant) |
This JT Exhaust Catalytic Converter is perfect for Hyundai Elantra 2011-2013 1.8L and Kia Forte 2014-2016 2.0L owners who want to pass emission tests and improve their car’s performance. It’s easy to install and built to last. |
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Catalytic Converter, QKVBKAU for Toyota Camry/Venza | EPA Compliant Replacement | OBD II & High Flow Design | catalytic convertor Replaces OEM# 16692, 641489, 41100 |
This catalytic converter is perfect for Toyota owners who need a reliable replacement for their Camry (2012-2017) or Venza (2009-2015). It’s EPA compliant and meets federal standards, making it a smart choice for those outside CARB-regulated states. |
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FortunaFlow Catalytic Converter Compatible with Toyota Tacoma 2005-2015 2.7L Rear,Replace 54702,174100C100(EPA Compliant high flow standard) |
This FortunaFlow Catalytic Converter is perfect for Toyota Tacoma owners (2005-2015, 2.7L) who want a reliable, cost-saving replacement that’s easy to install and EPA compliant. |
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Nilight Catalytic Converter for Toyota Tacoma 2.7L 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015(EPA Standard) |
This Nilight Catalytic Converter is perfect for Toyota Tacoma owners with a 2.7L engine, model years 2005-2015, who need a reliable, EPA-compliant replacement that’s easy to install and built to last. |
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Catalytic Converter, QKVBKAU for Acura TSX, Honda Accord 2.4L L4 | EPA Compliant Replacement | OBD II & High Flow Design | catalytic convertor Replaces OEM# 16590, 641499, 674968 |
This catalytic converter is perfect for Acura TSX and Honda Accord owners who need a reliable, EPA-compliant replacement. It’s easy to install and built to last, ensuring your vehicle runs smoothly. |
Detailed Reviews
Discover the top 10 OBD II Compliant Catalytic Converters in our expert-curated guide. Each product is thoroughly reviewed for performance, durability, and value. Whether you need EPA compliance, easy installation, or long-lasting materials, this guide has you covered. Find the perfect fit for your vehicle and drive with confidence.
1. Catalytic Converter, QKVBKAU Direct-Fit EPA & CARB Compliant for Hyundai Sonata, for Kia Forte, Optima & More | Catalytic Convertor Replaces 16648, 289602G540, 289602G710 | OBD II & High-Flow Design

This catalytic converter is a direct-fit solution for Hyundai and Kia vehicles. It’s designed for specific models like the Sonata, Forte, and Optima.
It meets EPA and CARB standards, ensuring legal use in all 50 states. The stainless steel housing and triple precious metals deliver durability and efficient emissions reduction.
Easy installation, professional help recommended. Ensures proper fit and prevents leaks. Maintains warranty validity.
| Pros | Cons |
|---|---|
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Perfect For:
This catalytic converter is perfect for Hyundai and Kia owners who need a reliable, direct-fit replacement. It’s EPA and CARB-compliant, ensuring legal use in all 50 states, including California.
Ready to Purchase?
2. FortunaFlow Catalytic Converter Compatible with Honda Civic LX/HX/DX/CX 1996 1997 1998 1999 2000,Del Sol 1996 1997 1.6L L4 Front Position Replace 642597, 674439(EPA Compliant high flow standard)

The FortunaFlow Catalytic Converter is compatible with Honda Civic models from 1996 to 2000 and the Del Sol 1996-1997. It’s a direct fit design, so no extra changes are needed. This part is EPA compliant and meets high flow standards.
It solves common issues like P0420 and P0430 warning lights. The sturdy stainless steel build ensures it lasts long under high heat and pressure.
Check compatibility before buying, as it’s not for sale in some states. The precise flange design makes installation easy with included gaskets and hardware.
| Pros | Cons |
|---|---|
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Perfect For:
This FortunaFlow Catalytic Converter is perfect for Honda Civic and Del Sol owners who need a reliable, EPA-compliant replacement. It’s ideal for fixing P0420 or P0430 codes and passing OBD-II tests without hassle.
Ready to Purchase?
3. KAX 1PC High Flow Catalytic Converter Compatible with 2012-2019 Soul 1.6L, 2012-2017 Accen-t, 2012-2017 Rio Direct-Fit Stainless Steel Catalyst Convertor Replace 16681, 642036, 41068,EPA Compliant

The KAX High Flow Catalytic Converter is compatible with Kia and Hyundai models like the 2012-2019 Soul 1.6L, 2012-2017 Accent, and 2012-2017 Rio. Its stainless steel body resists rust and ensures long-lasting performance. The double-layer ceramic carrier boosts flow rate and fuel efficiency.
Installation is easy with included gaskets and hardware—no modifications needed. Note: It meets OBD II Standards but is not legal in California or New York.
| Pros | Cons |
|---|---|
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Perfect For:
This KAX High Flow Catalytic Converter is perfect for car owners who need a reliable replacement for their 2012-2019 Kia Soul 1.6L, 2012-2017 Hyundai Accent, or 2012-2017 Rio. It’s easy to install and built to last, making it ideal for those looking to improve power and fuel economy without hassle.
Ready to Purchase?
4. KAC 2″ Universal Catalytic Converter, Catalytic Convertor with shield, 93241,53004 Stainless Steel Automotive Replacement Catalytic Converter 2PCS(EPA Complaint)

The KAC 2″ Universal Catalytic Converter is a stainless steel automotive replacement part. It comes in a set of 2 pieces and is EPA compliant.
This converter is widely compatible with 2″ universal systems. It meets OBD II standards, but not CARB. It’s not legal in California or New York.
The honeycomb structure inside improves purification efficiency. It reduces harmful gases like CO, HC, and NOx. It’s easy to install with a plug-and-play design.
| Pros | Cons |
|---|---|
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Perfect For:
This KAC 2″ Universal Catalytic Converter is perfect for car owners who want a reliable, EPA-compliant replacement. It’s easy to install and works well for most vehicles, except in California and New York.
Ready to Purchase?
5. Catalytic Converter, QKVBKAU for Kia Optima 2.4L L4 | EPA Compliant Replacement | OBD II & High Flow Design | catalytic convertor Replaces OEM# 674-128, 10H56963, 48767736KA

This catalytic converter is a direct-fit replacement for Kia Optima 2.4L L4 (2009-2015). It meets EPA standards and is designed to match OEM specifications.
Easy installation, no modifications needed, and professional fitting recommended.
| Pros | Cons |
|---|---|
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Perfect For:
This catalytic converter is perfect for Kia Optima owners with a 2.4L L4 engine (2009-2015) who need a reliable replacement that meets EPA standards. It’s not for CARB states, so check your local laws before buying.
Ready to Purchase?
6. JT Exhaust Catalytic Converter Compatible with Hyundai Elantra 2011 2012 2013 1.8L, Kia Forte 2014-2016 2.0L (EPA Compliant)

The JT Exhaust Catalytic Converter is EPA compliant, meeting strict emission standards. It’s designed for specific Hyundai and Kia models, ensuring a perfect fit.
This converter uses extra precious metal catalyst to boost efficiency and pass emission tests. It also features high-quality materials for longer service life.
Easy to install, direct-fit design, and built to last.
| Pros | Cons |
|---|---|
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Perfect For:
This JT Exhaust Catalytic Converter is perfect for Hyundai Elantra 2011-2013 1.8L and Kia Forte 2014-2016 2.0L owners who want to pass emission tests and improve their car’s performance. It’s easy to install and built to last.
Ready to Purchase?
7. Catalytic Converter, QKVBKAU for Toyota Camry/Venza | EPA Compliant Replacement | OBD II & High Flow Design | catalytic convertor Replaces OEM# 16692, 641489, 41100

This catalytic converter is a direct-fit replacement for specific Toyota models. It works with Toyota Camry 2.5L (2012-2017) and Toyota Venza 2.7L (2009-2015). Always check your vehicle details before buying to ensure it fits.
It meets EPA standards and is OBD II compliant. This unit replaces OEM parts like 16692, 641489, and 41100. It keeps your vehicle’s original performance and functionality.
Not legal in CARB states like California, Colorado, New York, or Maine. Professional installation is recommended for the best results.
| Pros | Cons |
|---|---|
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Perfect For:
This catalytic converter is perfect for Toyota owners who need a reliable replacement for their Camry (2012-2017) or Venza (2009-2015). It’s EPA compliant and meets federal standards, making it a smart choice for those outside CARB-regulated states.
Ready to Purchase?
8. FortunaFlow Catalytic Converter Compatible with Toyota Tacoma 2005-2015 2.7L Rear,Replace 54702,174100C100(EPA Compliant high flow standard)

The FortunaFlow Catalytic Converter is a direct fit for Toyota Tacoma 2005-2015 2.7L Rear models. It replaces parts 54702 and 174100C100, offering a cost-saving alternative to dealer prices.
This converter is EPA compliant, easy to install, and comes with a 1-year warranty. It stabilizes OBD-II tests and eliminates warning lights. Not for sale in CA, NY, CO, or ME.
| Pros | Cons |
|---|---|
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Perfect For:
This FortunaFlow Catalytic Converter is perfect for Toyota Tacoma owners (2005-2015, 2.7L) who want a reliable, cost-saving replacement that’s easy to install and EPA compliant.
Ready to Purchase?
9. Nilight Catalytic Converter for Toyota Tacoma 2.7L 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015(EPA Standard)

The Nilight Catalytic Converter is a direct-fit replacement for Toyota Tacoma 2.7L models from 2005 to 2015. It’s EPA compliant, designed for OBDII vehicles, and ensures easy installation with its OE-style design.
This converter is strong and durable, made with stainless steel and aluminized materials. It keeps your check engine light off and reduces tailpipe emissions, making it a reliable choice for your vehicle.
| Pros | Cons |
|---|---|
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Perfect For:
This Nilight Catalytic Converter is perfect for Toyota Tacoma owners with a 2.7L engine, model years 2005-2015, who need a reliable, EPA-compliant replacement that’s easy to install and built to last.
Ready to Purchase?
10. Catalytic Converter, QKVBKAU for Acura TSX, Honda Accord 2.4L L4 | EPA Compliant Replacement | OBD II & High Flow Design | catalytic convertor Replaces OEM# 16590, 641499, 674968

This catalytic converter is a direct-fit replacement for specific Acura TSX and Honda Accord models. It’s EPA compliant and meets OBD II standards, ensuring your vehicle runs smoothly and legally.
Made with stainless steel and precious metals, it’s built to last. Professional installation is recommended for the best results.
| Pros | Cons |
|---|---|
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Perfect For:
This catalytic converter is perfect for Acura TSX and Honda Accord owners who need a reliable, EPA-compliant replacement. It’s easy to install and built to last, ensuring your vehicle runs smoothly.
Ready to Purchase?
Buying Guide
Finding the right catalytic converter is easy with our guide. We’ll help you pick the best OBD II compliant option for your car.
Buying a catalytic converter can feel tricky, but we’ve made it simple. Here’s what to look for:
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Vehicle Compatibility:
Make sure the converter fits your car’s make, model, and year. Check details like engine size for a perfect match. -
EPA Compliance:
Choose a converter that meets EPA standards to ensure it’s legal and efficient in your state. -
Material Quality:
Look for stainless steel or aluminized materials for durability and long-lasting performance. -
Ease of Installation:
Pick a direct-fit design with included hardware for a hassle-free installation. -
Emission Reduction:
Ensure it reduces harmful gases like CO, HC, and NOx effectively. -
Warranty:
A good warranty, like 1-year coverage, adds peace of mind and shows the product’s reliability. -
Price and Value:
Compare prices and features to find the best balance between cost and quality.
With these tips, you’ll find the perfect OBD II compliant catalytic converter for your vehicle.