How much does it cost to replace a catalytic converter on a Acura?

A typical installed price falls roughly in the range of $1,000 to $3,000, depending on the Acura model, whether you use an OEM or aftermarket catalytic converter, and the local labor rate.

Replacing a catalytic converter is a common repair for Acura owners when the converter becomes clogged or damaged, or when it fails an emissions test. The exact cost depends on several factors, including the model and engine, how many converters the car has, whether the shop uses factory parts or aftermarket equivalents, and the labor time required to access and remove the old unit. Below you’ll find a breakdown of the drivers behind price, followed by typical cost ranges and practical guidance for getting quotes.

What drives the price

Several factors influence the final price you’ll pay for replacing a catalytic converter on an Acura. Understanding these can help you compare quotes more accurately.

• Parts type and quality: OEM (factory) catalytic converters generally cost more than aftermarket equivalents, but some aftermarket parts come with shorter warranties or fitment concerns.


• Labor costs and time: Labor rates vary by region and shop, and some models require more extensive exhaust work or sensor replacement, increasing hours billed.


• Vehicle specifics: The number of catalytic converters (single vs. dual), their location, and the engine type can change part and labor costs. Some Acura models have more complex exhaust routing.


• Additional repairs or replacements: Oxygen sensors, wiring, heat shields, gaskets, or exhaust pipes may also need attention during the job, adding to the bill.


• Local regulations and inspections: In some areas, emissions-related work may trigger inspections or re-certification fees.

In practice, the final price reflects a mix of these variables. Always ask for a written quote that breaks down parts and labor, and confirm whether a warranty covers the replaced converter and any related components.

Typical installed costs by scenario

The following ranges reflect common situations for Acura models in the United States as of 2024–2025. They differentiate between OEM and aftermarket parts, and whether the car has one or multiple catalytic converters.

• OEM catalytic converter (single-cat on most models): Part is typically $700–$1,900; labor usually $150–$400; installed total commonly $850–$2,300. Some high-demand models or years may push higher.


• OEM catalytic converter (dual-cat or more complex exhaust): Part is typically $1,400–$3,000+; labor $250–$600; installed total often $1,650–$3,600+. Higher if both converters or tricky access is involved.


• Aftermarket catalytic converter (single-cat): Part roughly $200–$600; labor $100–$350; installed total generally $300–$950. Prices vary by brand and fitment.


• Aftermarket catalytic converter (dual-cat or more complex): Part roughly $300–$900; labor $250–$600; installed total generally $550–$1,500. Expect higher costs for models with two cats and longer exhaust runs.

Note: These ranges are intended as guidance. Your exact cost can be higher or lower depending on your specific Acura model (for example, ILX, TLX, MDX, RDX, or NSX variants), engine type, whether you need a sensor replacement, regional labor rates, and whether the shop uses OEM or aftermarket parts. For a precise quote, request written estimates from multiple reputable shops, and ask about any available warranties on parts and labor.

What to do next

To avoid surprises, follow these practical steps when planning a catalytic converter replacement for your Acura.

• Get multiple quotes from independent shops and dealers, and ask for itemized pricing.


• Ask whether the quote includes any required oxygen sensors, gaskets, or exhaust clamps, and whether a warranty applies to those components.


• Clarify whether the replacement is with OEM parts or aftermarket equivalents, and understand the warranty terms for each option.


• Check if the vehicle may require ancillary work (e.g., exhaust pipe replacement, heat shields, or wiring) that could add to the cost.


• Ensure the shop performs an emissions-related check after the repair, and keeps documentation in case you need it for inspections.

By comparing quotes and understanding the components of the bill, you can choose the option that best fits your budget and needs while ensuring the repair returns your Acura to proper performance and emissions compliance.

Summary

Replacing a catalytic converter on an Acura typically costs between $1,000 and $3,000 installed, with OEM parts generally on the higher end and aftermarket parts offering more affordable options. Costs depend on model, number of converters, labor rates, and whether additional repairs are required. Gather several written quotes, confirm warranty coverage, and consider the trade-off between OEM fitment and aftermarket pricing to make an informed decision.

Is it worth replacing a catalytic converter?

Yes, replacing a catalytic converter is often worth it to avoid legal penalties, significant engine damage, and poor performance. While the initial cost is high, driving without one is not recommended due to the risk of failing emissions tests, a loud engine, reduced fuel efficiency, and potential damage to other engine components. 
Reasons to replace your catalytic converter 
This video explains the reasons why replacing a catalytic converter is worth it: 49sStudent LessonYouTube · Sep 18, 2023

• Avoid legal and inspection issues: Many states require a working catalytic converter to pass emissions and smog tests for vehicle registration. Driving without one is illegal in most places. 
• Prevent engine damage: A malfunctioning or clogged converter can cause the engine to work harder, leading to sluggishness, misfires, and other issues. Continued driving can lead to more extensive and costly engine damage or failure. 
• Improve vehicle performance: A new converter will restore engine performance, improve acceleration, and can prevent other problems like stalling. 
• Increase fuel efficiency: A clogged converter can decrease your gas mileage, so replacement can improve your fuel economy. 
• Reduce harmful emissions: The primary function of a catalytic converter is to reduce harmful pollutants from your vehicle's exhaust, which is beneficial for the environment. 

When to consider replacement

• Signs of a problem: Look for symptoms like reduced engine power, a sulfur or rotten egg smell from the exhaust, poor acceleration, or a loud rattling noise from the exhaust system. The "check engine" light is often a sign of a failing catalytic converter, but it could also be triggered by other engine issues, so a proper diagnosis is important. 
• Cost vs. long-term cost: Even though replacement is expensive, the cost of ignoring the problem can lead to even more expensive engine repairs down the line. 
• Repair vs. replacement: If the catalytic converter is damaged, get an estimate for both repair and replacement. Often, replacement is the better option if the repair cost is similar to a new part. 

What is the cheapest way to replace a catalytic converter?

The cheapest way to fix a catalytic converter is to have a universal converter welded in by a muffler shop, which can cost between $200$ 200$200 and $300$ 300$300. For certain issues, a less expensive alternative to replacement could be a catalytic converter cleaner or, for certain code issues, an oxygen (O2) sensor spacer, but a replacement is the only guaranteed solution for a clogged converter.
 
This video explains how to clean a catalytic converter: 45sAuto V Fix YouTube · Jan 21, 2022
Less expensive repair options

• Universal converter replacement: A universal converter is a cheaper alternative to a direct-fit replacement. A muffler shop can cut out the old converter and weld in the new universal one, which can cost anywhere from $200$ 200$200 to $300$ 300$300. 
• Catalytic converter cleaner: If the converter is simply clogged with soot from a rich fuel mixture, a chemical cleaner may be effective. However, this is not a guaranteed fix and may only be a temporary solution. 
• Oxygen sensor spacer: In some cases, a P0420 or P0430 code might be a false positive caused by an oxygen sensor issue. A cheaper fix can be to install an O2 sensor spacer, which can be made from a "spark plug non-fouler" or purchased online. However, this is only a temporary solution and may not work, and it may not be legal for emissions testing. 

Other factors to consider

• Diagnosis is key: Before choosing a repair option, make sure to properly diagnose the issue. An O2 sensor issue or exhaust leak might be the problem, and addressing that first could save you money. 
• Direct-fit vs. universal: If your vehicle requires a direct-fit converter (e.g., newer cars where it's part of the exhaust manifold), it will likely be much more expensive, ranging from $300$ 300$300 to $2,500$ 2 comma 500$2,500 or more for just the part. 
• DIY installation: If you are comfortable with auto repairs, you could potentially save on labor costs by replacing the converter yourself, especially if you have a universal fit model that you can bolt or clamp into place. 

This video demonstrates how to replace a stolen catalytic converter: 59sChrisFixYouTube · Aug 29, 2024

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

The average cost for an Acura TL Catalytic Converter Replacement is between $1,978 and $2,042. Labor costs are estimated between $125 and $184 while parts are priced between $1,853 and $1,858.

Can I still drive with a bad catalytic converter?

You can technically drive with a bad catalytic converter, but it's not recommended, especially if it's clogged, as it can lead to engine damage, poor performance, and potential legal issues. If the converter is simply inefficient but not blocked, you may be able to drive for a while, but if it becomes clogged, it can cause severe issues like engine misfires or a total loss of power, as the exhaust cannot escape. A professional diagnosis is needed to determine the extent of the problem. 
This video explains the symptoms of a bad catalytic converter: 1m8020 AutomotiveYouTube · Apr 14, 2024
Risks of driving with a bad catalytic converter

• Engine damage: A clogged converter can cause extreme back pressure, which can damage engine components like crankshafts, rings, and bearings over time. 
• Poor performance: You may experience a significant loss of power, engine misfires, rough idling, and an inability to accelerate past a certain speed. 
• Legal issues: In many areas, it is illegal to drive with a faulty or missing catalytic converter, and you could be fined or fail an emissions test. 
• Increased emissions: A failing converter will not properly clean the exhaust, leading to increased pollution. 

What to do if you suspect a bad catalytic converter

• Avoid driving: If you suspect a clogged converter, it is best to avoid driving the car to prevent further damage. 
• Get a professional diagnosis: Have a mechanic diagnose the issue to determine if the converter is clogged or just inefficient. 
• Consider towing: If you have to move the vehicle, consider using a tow truck to take it to a repair shop. 

You can watch this video for more information on the risks of driving with a bad catalytic converter: 47sTalkingTechTrendsYouTube · Apr 21, 2025