How Much It Costs to Replace a Catalytic Converter on a 2008 Honda Fit

Expect to pay roughly $450–$1,000 with an aftermarket EPA-compliant part in most states, $900–$1,800 for a CARB-compliant unit in California and other CARB states, and $1,500–$2,400 for a genuine Honda converter. Prices in 2025 vary based on part type, local labor rates, and whether your state requires a CARB-certified converter.

What Drives the Price

Several factors determine how much you’ll spend replacing the catalytic converter on a 2008 Honda Fit. Understanding each component helps you budget and choose the right option for your location and needs.

• Converter type: Aftermarket EPA-compliant ($200–$600), CARB-compliant ($600–$1,100), or OEM Honda ($1,200–$1,800) for the part alone.
• Labor: Typically 1.0–2.0 hours; at common 2025 shop rates ($110–$180/hr), expect $120–$360, with rusted hardware potentially adding time and cost.
• Diagnostics: Many shops charge $100–$180 to confirm a P0420/P0430 and rule out other causes before replacement.
• Ancillary items: Gaskets, hardware, and potentially oxygen sensors can add $30–$300.
• Regulatory requirements: CARB states (e.g., CA, NY, CO) require CARB-certified converters, which are pricier and must match an approved part number.

Taken together, those variables explain why estimates range broadly and why quotes can differ between independent shops and dealerships.

Typical Price Scenarios in 2025

Below are realistic out-the-door ranges based on where you live and which part you select.

Aftermarket EPA-Compliant (most non-CARB states): $450–$1,000

This is the most common, budget-friendly route outside CARB jurisdictions. Parts from reputable brands often run $200–$600, with labor and small parts bringing the total into the $450–$1,000 range. This option is not legal in CARB states.

CARB-Compliant (CA, NY, CO, and other CARB jurisdictions): $900–$1,800

CARB-certified converters cost more due to stricter standards and certification. Expect the part to be $600–$1,100, plus labor and incidentals. Shops must install an approved unit matched to your vehicle and document the installation.

Genuine Honda (OEM): $1,500–$2,400

Dealerships and some independents can supply the Honda manifold-integrated converter. It’s usually the most expensive option, favored when maximum fitment assurance or warranty alignment is desired. Total cost includes the higher part price and standard labor.

Time Required and What the Job Includes

Replacing the Fit’s primary converter—typically integrated with the exhaust manifold—doesn’t usually take long, but rusted fasteners can complicate the job. Here’s what most shops do.

1. Confirm the diagnosis (scan for P0420, check fuel trims, inspect for exhaust leaks).
2. Remove heat shields and O2 sensors; unbolt the manifold/converter assembly.
3. Install the new converter with fresh gaskets/hardware; reinstall O2 sensors.
4. Clear codes, perform a test drive, and verify readiness monitors.

Under normal conditions, the work takes 1–2 hours; add time if studs are seized or additional exhaust components need attention.

Ways to Save and Avoid Repeat Failures

If you’re trying to keep costs in check while ensuring longevity, consider these practical steps.

• Verify the cause: A P0420 can stem from exhaust leaks, lazy O2 sensors, or software issues—fixing those may avert a converter replacement.
• Choose the right certification: In CARB states, insist on a CARB-approved unit to pass inspection and avoid rework.
• Replace worn O2 sensors proactively if mileage is high; it can protect the new converter and improve fuel control.
• Address underlying issues (misfires, oil burning, coolant leaks) that can quickly ruin a new cat.
• Compare quotes from independents and dealerships; ask for line-item estimates on parts, labor, and diagnostics.

These steps help ensure you spend only what you need to and that your replacement passes emissions long term.

Signs You Might Not Need a Converter Yet

Before committing to a replacement, make sure the root cause truly is a failing catalytic converter.

• Exhaust leaks upstream of the cat, especially at the manifold or flex pipe, can trigger P0420.
• O2 sensor aging or wiring faults can mislead the ECU into flagging converter efficiency.
• Recent battery disconnect or ECM reset may require drive cycles before monitors stabilize.
• Rich/lean conditions from vacuum leaks, MAF/MAP issues, or injector problems can mimic a bad cat.

Confirming or eliminating these possibilities can save hundreds of dollars and prevent unnecessary parts replacement.

Related Costs and Considerations

Budget for a smog re-test if applicable ($20–$60), and consider an anti-theft shield if catalytic theft is a concern in your area ($150–$450 installed). Federal emissions warranties (8 years/80,000 miles) won’t apply to a 2008 model anymore, but extended warranties might—check your coverage.

Bottom Line

For a 2008 Honda Fit in 2025, plan on $450–$1,000 with an aftermarket EPA-compliant converter, $900–$1,800 for a CARB-compliant unit in regulated states, and $1,500–$2,400 for OEM. Final price hinges on the part you choose, local labor rates, and confirming the diagnosis to avoid unnecessary replacement.

Summary

Replacing the 2008 Honda Fit’s catalytic converter typically costs $450–$1,000 with a standard aftermarket part, $900–$1,800 with a CARB-compliant unit, and $1,500–$2,400 for OEM. Factor in diagnostics, labor, and potential O2 sensors. Verify the cause of any emissions code first, select a legally compliant converter for your state, and address underlying engine issues to protect your new cat.

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

The average cost for a Honda Fit Catalytic Converter Replacement is between $1,442 and $1,519.

How much does a shop charge to replace a catalytic converter?

For direct-fit options, a replacement can cost anywhere from $300.00 to $2,500.00, depending on the model, for just the cost of the part. You should also think about labor costs, which could cost between $70 and $130 an hour to install the converter.

Can you drive a Honda with a bad catalytic converter?

You may also notice the engine is noisier, and the vehicle may feel sluggish. Running the car this way could reduce fuel efficiency and even damage some components. Rather than trying to drive a car with a missing catalytic converter, it’s best to have it towed to a garage for repairs.

Is it worth fixing a catalytic converter?

Yes, it is usually worth fixing or replacing a catalytic converter to prevent vehicle damage, ensure compliance with emission laws, and avoid fines. However, the economic decision of repairing an old car versus buying a new one is a significant factor, especially if the repair cost is a large percentage of the vehicle’s value. You should weigh the cost of replacement against your car’s current value and the potential for other mechanical problems.
 
Reasons to Fix Your Catalytic Converter

• Prevent Engine Damage: A faulty converter can lead to engine issues, including reduced performance and increased fuel consumption. 
• Comply with Emission Laws: A functioning catalytic converter is crucial for meeting emission standards. 
• Avoid Fines: In states with emissions tests, a bad catalytic converter will cause your car to fail, potentially leading to fines and the inability to register your vehicle. 
• Restore Performance: Replacing a clogged converter restores proper exhaust flow, improving engine efficiency and fuel economy. 

Factors to Consider Before Deciding

• Cost vs. Vehicle Value: Compare the cost of a new catalytic converter and labor against the car’s market value. If the repair cost is close to or exceeds the car’s worth, a new car might be a better investment. 
• Extent of the Damage: Minor damage, like a small crack, might be reparable, but significant damage often requires complete replacement. 
• Underlying Causes: The failure of a catalytic converter can be a symptom of a deeper engine issue, such as misfires or incorrect fuel mixtures. You must fix the root cause to prevent another converter from failing. 
• Your Location’s Laws: Research your state’s specific emissions testing requirements and the consequences of failing them. 
• Labor Costs: The part itself is expensive, but installation costs add to the overall price. If you’re comfortable with DIY work, replacing the converter yourself can save on labor.