For a 2018 Honda Accord, you’re typically looking at a broad price range depending on whether you choose aftermarket or OEM parts, and whether the car uses one or two catalytic converters. In general, aftermarket direct-fit cats run roughly $200–$600 before installation, while OEM Honda converters tend to run about $800–$1,600 or more, with labor added on top. If your model uses two converters, expect higher part costs and longer installation times.
Cost landscape for 2018 Honda Accord catalytic converters
The following ranges reflect common market options and can vary by engine configuration and regional pricing. Always verify exact part numbers for your VIN to ensure proper fitment and emissions compliance.
- Aftermarket direct-fit catalytic converters (CARB-compliant where required): typically about $200–$600 before installation, depending on the supplier, engine variant, and whether one or two converters are involved.
- OEM Honda catalytic converters: typically about $800–$1,600 or more for a single unit, with higher prices at the dealer and for particular engine configurations; installation is extra.
Note: If the Accord uses two catalytic converters, the total part cost will be higher because you need to replace both units, plus labor for wiring sensors and sealing exhaust connections.
Where to shop for a replacement
Where you buy matters for price, fitment, and warranty. The following sources are common for Accord owners seeking a catalytic converter.
- Auto parts chains (AutoZone, O'Reilly, Advance Auto Parts): mostly aftermarket, direct-fit units; prices typically range from $200–$500 depending on brand and model year compatibility.
- Honda dealership parts department: OEM units priced roughly $800–$1,600 per converter, with higher costs for labor at dealership service counters.
- Online retailers (RockAuto, PartsGeek, Amazon, eBay Motors): wide range for aftermarket parts; expect about $250–$700, but verify fitment and CARB status and beware of counterfeit or universal-fit items.
- Salvage yards / used parts: potential savings in the $50–$300 range, but with higher risk of wear, unknown history, and possible emissions compliance issues.
When shopping, confirm the exact part number and CARB compliance for your state, and check the warranty terms and return policy before purchasing.
Labor and installation considerations
Labor costs and time depend on engine configuration, access, and whether sensors or additional exhaust components must be replaced. Here are common expectations from shops.
- Labor time: typically 1–3 hours, depending on how accessible the exhaust is and whether dual converters are involved.
- Labor cost: roughly $100–$300, varying by region and shop rate.
- Possible additional costs: O2 sensors, new gaskets, clamps, or welding if the old unit is seized or the pipe needs modification; these extras can add $50–$200+ to the bill.
Getting a precise quote usually requires confirming your exact engine type (1.5L or 2.0L turbo), whether there are one or two converters, and the preferred part (OEM vs aftermarket).
Additional considerations by engine and configuration
The 2018 Honda Accord offers different powertrains that can affect cat count and pricing. Most 1.5L turbo models use a single catalytic converter, while some configurations may involve multiple converters or additional exhaust components. Always verify the VIN-specific parts with a dealer, independent shop, or online parts catalog to ensure correct fitment and emissions compliance.
Summary
In short, expect about $200–$600 for a common aftermarket catalytic converter and about $800–$1,600 or more for an OEM Honda unit, excluding labor. If two converters are required, both part costs will apply. Labor typically runs $100–$300, with additional costs for sensors or gaskets. Always verify fitment and CARB compliance for your state, obtain multiple quotes, and consider whether a dealer, independent shop, or online retailer offers the best overall value and warranty.