On a 2010 Nissan Altima, replacing a catalytic converter typically costs between $900 and $2,000, depending on the number of converters involved, the part choice (aftermarket vs OEM), and local labor rates.
Prices vary by engine option, emissions configuration, and the shop’s rate structure. Some Altima models use one catalytic converter, while others may have two. In states with stricter emissions rules, such as California, CARB-certified parts may be required, which can raise the price. Additional components, like oxygen sensors, may also need replacement if they are worn or defective.
What affects the cost
The final price is driven by several factors, from the choice of parts to the car's emission configuration and local labor rates. Here are the main variables shops consider when pricing a catalytic converter replacement for a 2010 Altima.
- Number of catalytic converters that need replacement. Some 2010 Altima models use one converter; others may have two, which increases parts and labor costs.
- Part type: aftermarket/direct-fit catalytic converters are typically cheaper than OEM/Nissan-branded units, and CARB-certified parts may be required in certain states.
- Labor rate and time: labor costs depend on the shop’s hourly rate and the complexity of removal/install, often 1–3 hours depending on the setup.
- Additional parts or service: oxygen sensors, gaskets, bolts, or wiring harnesses may require replacement, adding to the bill.
- Regional price variation: prices are higher in areas with strong demand or higher overhead costs, such as large cities or states with stricter emissions rules.
These factors combine to produce a broad price range, so customers should get a written estimate before work begins.
Typical price ranges for a 2010 Nissan Altima
Shop price estimates generally fall into two bands depending on part choice and number of converters. The following ranges illustrate what you might expect in many U.S. markets as of 2024–2026, but actual quotes can vary.
- One catalytic converter replacement (most common on a 2010 Altima with a single cat): aftermarket parts total roughly $300–$700, plus labor of about $75–$150 per hour for 1–2 hours (roughly $150–$300). Estimated all-in total: about $450–$1,000. OEM/Nissan direct-fit replacement could push parts to roughly $600–$1,100 with similar labor, for a total of about $750–$1,400.
- Two catalytic converters (if applicable): aftermarket parts typically $400–$900 total, labor $150–$350, giving a total around $800–$1,350. OEM parts could be $1,000–$1,800 or more, with labor pushing the total toward $1,300–$2,200+.
Because states like California require CARB-certified parts for street use, costs there can be higher, and some shops may only install certified units, which can affect price and availability.
What to expect at the shop
During the visit, a shop will typically perform a diagnostic to confirm the issue, inspect the exhaust system, and determine whether one or both catalytic converters require replacement. The process usually involves removing corroded or damaged parts, installing the new converter(s), replacing any worn sensors or hardware, and testing the exhaust system to ensure proper operation and a successful inspection or emissions test where applicable. Some vehicles may require a drive cycle or test drive to confirm the repair is effective.
Ask for a written estimate that itemizes parts and labor, and confirm any warranty on the converter and labor. If you’re upgrading to CARB-certified parts in a non-CARB state, verify local regulations to avoid future compliance issues.
Summary
Replacing a catalytic converter on a 2010 Nissan Altima typically costs in the ballpark of several hundred to a couple thousand dollars depending on whether aftermarket or OEM parts are used, how many converters are involved, and local labor rates. Prospective buyers should obtain multiple quotes, confirm whether sensors are included, and check for CARB certification where required. The broad takeaway is that while the price varies, the repair tends to be a mid-to-high hundreds in straightforward cases, and higher if two converters or OEM parts are needed.