Short answer: Replacing catalytic converters on a 2011 Honda Accord typically costs between roughly $600 and $3,000 in total, depending on whether you use aftermarket or OEM parts and whether one or two converters are replaced. Labor often adds about $80–$150 per hour.
The 2011 Accord’s exhaust system commonly contains two catalytic converters (a front and a rear unit), though exact configuration can vary by engine type and market. Prices also differ if you’re in a California CARB region, where compliant units may be required. Below are the main cost categories and what to expect in today’s market.
Cost options for a 2011 Honda Accord catalytic converter
Prices fall into two broad categories: OEM (original equipment manufacturer) parts and aftermarket replacements. The number of converters involved (one or two) also shifts the total cost.
OEM catalytic converters
- Per converter (front or rear): typically about $700–$1,200.
- Two converters (parts only): roughly $1,400–$2,400.
- Installed total (parts plus labor): commonly around $1,600–$3,300 for two converters, depending on labor rates and shop charges.
OEM parts tend to fit perfectly and may be required for CARB compliance in some regions; they are usually pricier but come with dealership support and a warranty.
Aftermarket catalytic converters
- Per converter (direct-fit): typically about $200–$550.
- Two converters (parts only): roughly $400–$1,100.
- Installed total (parts plus labor): commonly around $600–$2,000 for two converters, depending on labor rates and shop charges.
Aftermarket units are generally cheaper and widely available, but you should verify CARB compliance in states that require it and confirm fitment for your specific engine variant.
What affects the total price
Several factors determine how much you’ll pay for catalytic converter replacement beyond the basic OEM vs aftermarket choice.
- Number of converters to replace (one vs two).
- Whether the region requires CARB-compliant parts (California and some other areas).
- Source of parts (dealer vs independent parts store vs online retailer).
- Labor rates and the time required for access and removal in the exhaust system.
In practice, these factors mean you can see a wide range in quotes from local shops. Always request a written estimate that breaks down parts and labor and confirms CARB compliance if you’re in a regulated state.
What to expect during installation
Understanding the installation process can help you plan and avoid surprises at the shop.
- Shop inspection to confirm how many converters need replacement and verify part compatibility.
- Choice of parts (OEM vs aftermarket) and confirmation of any warranties or guarantees.
- Removal of the old catalytic converters and installation of the new units, with attention to exhaust seals and sensors.
- Oxygen sensor checks and ECU recalibration if required by the new hardware.
- Test drive and emissions readiness check to ensure proper operation.
If you replace both converters, consider inspecting related exhaust components (gaskets, hangers, and sensors) and addressing any corrosion or wear that could impact the new units’ lifespan.
Summary
For a 2011 Honda Accord, catalytic converter replacement costs span from roughly $600 to $2,000 for aftermarket parts (plus labor) and from about $1,600 to $3,300 for OEM parts installed. The exact total depends on how many converters are involved, whether you need CARB-compliant parts, and the local labor rates. Shop around for quotes from multiple providers, verify part compatibility, and confirm whether CARB compliance is required in your area.