Acura EL Catalytic Converters: Everything You Need to Know

The Acura EL is a compact sedan sold in the Canadian market from 1997 to 2005. It was a rebadged version of the Honda Civic. All EL models came with 4-cylinder engines and used a single catalytic converter. OEM catalytic converters contain a ceramic or metallic honeycomb substrate coated with precious metal catalysts like platinum, palladium, and rhodium.

Direct-fit replacement Acura EL Catalytic Converters are available from aftermarket brands like Walker, Bosal, Eastern Catalytic, and MagnaFlow. Proper inlet/outlet dimensions and flange style must match the stock converter to fit the EL exhaust system. CARB-compliant converters are required for Acura EL models sold in California.

Specific Details on the Acura EL Catalytic Converters

Recommended Replacement Converters:

  • Walker Ultra EPA Standard Cat – Part #54015
  • Bosal EPA Standard Converter – Part #44302
  • Eastern Catalytic EPA Standard Cat – Part #72012

Troubleshooting Tips for Acura EL Catalytic Converters:

  • If the check engine light comes on, use an OBD-II scanner to pull the diagnostic trouble code (DTC). This will help determine if the converter is faulty.
  • Look for signs like reduced performance, increased fuel consumption, and metallic rattling noises from the exhaust.
  • Inspect the oxygen sensor performance and exhaust system for leaks before condemning the converter.

Installation Tips:

  • Always replace gaskets and donut seals to prevent exhaust leaks. High temp silicone sealant can also be used.
  • The inlet/outlet pipe diameter on the Acura EL converter is 2.25″. Make sure to get the correct inlet/outlet size.
  • Tighten the converter mounting nuts to 22-27 ft-lbs to prevent loosening.
  • Reconnect oxygen sensors to the new converter in their original locations.
  • Clear any codes with a scan tool after installation to reset fuel trim and engine functions.

Read More: Acura CL Catalytic Converters: Everything You Need to Know

How To Replace Catalytic Converter on an Acura EL


We must install the catalytic converter in the same orientation and location as the original converter in the exhaust system. This action ensures proper exhaust gas flow through the converter. Position the Acura EL Catalytic Converters between the exhaust manifold and the mid-pipe, and bolt them to the existing mounting brackets.

Exhaust Seals:

Use new exhaust donut gaskets to seal the inlet and outlet flanges of the converter. This prevents harmful exhaust leaks. Apply a thin layer of high-temp silicone sealant to help create a solid seal.

Oxygen Sensors:

There are oxygen sensor bungs both upstream and downstream of the converter. These must be positioned properly so the O2 sensors can be reinstalled in their original locations. The sensors enable closed-loop fuel control.

Inspect Other Components:

Inspect the rest of the exhaust system and engine when replacing the Acura EL Catalytic Converters. Look for leaks, damage, or other issues that could have caused converter failure.

Post-Installation Check:

After installing the new Acura EL Catalytic Converter, clear any codes with an OBD2 scanner. Test drive the vehicle and verify catalyst efficiency monitors are set as “Ready.” This indicates the new converter is working properly.

FAQs about Acura EL Catalytic Converters

What is a catalytic converter in my Acura EL, and what does it do? 

A catalytic converter in your Acura EL is an emissions control device that converts harmful pollutants like carbon monoxide, hydrocarbons, and nitrogen oxides into less harmful substances. It plays a crucial role in reducing vehicle emissions.

How long does an Acura EL catalytic converter typically last? 

The lifespan of an Acura EL catalytic converter can vary, but it generally ranges from 100,000 to 150,000 miles. Proper maintenance and driving habits can influence its longevity.

What are the symptoms of a clogged Acura EL catalytic converter? 

Signs of a clogged catalytic converter in our Acura EL may include:

  • Reduced engine performance.
  • Increased fuel consumption.
  • A noticeable drop in acceleration.
  • The illumination of the “Check Engine” light.

Can a clogged Acura EL catalytic converter be cleaned? 

Cleaning a clogged catalytic converter is typically ineffective in the majority of cases. It often requires replacement to restore proper vehicle performance and emissions.

How much does it cost to replace an Acura EL catalytic converter? 

The cost of replacing an Acura EL catalytic converter can vary based on the model year, type of converter, and labor costs. It typically ranges from $200 to $1,500, including parts and labor.

What are the benefits of using a high-quality catalytic converter in my Acura EL? 

A high-quality catalytic converter can help reduce emissions, improve fuel efficiency, and ensure your vehicle complies with environmental regulations, contributing to cleaner air and better overall performance.

Can I sell my old Acura EL catalytic converter as scrap? 

Yes, you can sell your old catalytic converter as scrap. Catalytic converters contain precious metals like platinum, palladium, and rhodium, which have scrap value.

How can I determine the scrap price of my Acura EL catalytic converter?

 Acura EL converter scrap prices for catalytic converters fluctuate based on market conditions and the specific metals inside. You can estimate its value with local scrap yards or online resources.

Are aftermarket catalytic converters available for my Acura EL, and are they a good option? 

Yes, there are aftermarket catalytic converters available for Acura EL models. They can be a cost-effective alternative, but ensuring they meet emission standards and are compatible with your vehicle is essential.

What can I do to extend the life of my Acura EL catalytic converter? 

To extend the life of your catalytic converter, maintain your vehicle regularly, use quality fuel, fix any engine-related issues promptly, and drive responsibly to minimize excessive wear and tear on the converter.

What is the Acura EL known for?

The Acura EL is renowned for its luxurious features, smooth handling, and a balance of performance and comfort. It’s a compact sedan that offers a premium driving experience.

What are the key features of the Acura EL?

The Acura EL boasts leather upholstery, advanced safety systems, high-quality audio systems, and a responsive and efficient engine.

What is the fuel efficiency of the Acura EL?

The Acura EL is designed with fuel efficiency in mind. Its engine optimization and aerodynamic features contribute to impressive gas mileage, making it an economical choice for daily commutes.

What is the performance like for the Acura EL?

With a focus on a balanced driving experience, the Acura EL offers a responsive and smooth performance. Its precise steering and well-tuned suspension enhance both city driving and highway cruising.

Are there different trims available for the Acura EL?

Yes, the Acura EL typically comes in different trims, each offering varying features and luxury. Check with your local dealership for the latest trim options available.

What is the safety rating of the Acura EL?

The Acura EL often receives high safety ratings thanks to its advanced safety features, including airbags, anti-lock brakes, stability control, and more. Always refer to the latest safety ratings for the most accurate information.

What maintenance does the Acura EL require?

Regular maintenance, such as oil changes, tire rotations, and brake inspections, is essential for keeping the Acura EL in optimal condition. Follow the manufacturer’s recommended service schedule for best results.

Is the Acura EL a good choice for families?

While the Acura EL is a compact sedan, it can be suitable for small families. Its safety features, comfortable interior, and reliability make it a practical choice for daily family use.

How does the Acura EL handle different weather conditions?

The Acura EL is designed to handle various weather conditions competently. However, like any vehicle, it’s crucial to equip it with appropriate tires and follow safe driving practices in inclement weather.

What is the resale value of the Acura EL?

The Acura EL typically retains a good resale value thanks to its reputation for reliability and the durability of its components. Regular maintenance and care can positively impact the resale value.

I am Nicolas, an automobile engineer with over 5 years of experience in exhaust systems and catalytic converters. I am passionate about learning and understanding how things work, and I am always looking for new ways to improve the performance and efficiency of automotive exhaust systems.

Sharing Is Caring:

Leave a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.