Prices typically range from about 150 to 600 dollars for aftermarket direct-fit units, and roughly 500 to 1,500 dollars for OEM dealer replacements, with installation labor usually adding another 100 to 300 dollars. Exact numbers depend on engine type, whether your model uses one or two catalytic converters, and where you buy.
What affects the price
Several factors influence the final cost of a catalytic converter for a 2004 Honda Accord. Engine variant (4-cylinder vs. V6), the number of converters in the exhaust system (single vs. dual converters), the type of replacement (OEM vs. aftermarket), and the seller or retailer all play significant roles. Local labor rates also affect the total bill.
Engine and exhaust configuration
The Accord from this era can have different exhaust layouts. Some 2004 Accords use a single catalytic converter, while others—particularly V6 configurations—may employ two. The presence of a pre-cat (front converter) and a main cat can change both the price and the installation complexity.
New versus used or remanufactured
New OEM parts from the dealer generally cost more but offer guaranteed fit and emissions compliance. Aftermarket new direct-fit units are cheaper but must match your vehicle’s year and engine. Used or remanufactured converters are the least expensive option but come with higher risk of failure or failing emissions tests.
Buying options
The following options show common paths buyers take, with typical price ranges to illustrate how costs can add up.
- OEM Honda replacement (dealer): typically 500–1,500 dollars, depending on engine and whether one or two converters are involved.
- Aftermarket direct-fit catalytic converter: commonly 150–600 dollars; these are designed to bolt in without major fabrication.
- Aftermarket universal catalytic converter: roughly 50–200 dollars, but installation often requires custom fittings and may not always meet emissions standards without professional modification.
- Used or remanufactured catalytic converter: about 100–400 dollars, depending on condition and source.
In short, the best choice balances cost, fit, and compliance. OEM parts offer reliable fit and emission compatibility but at a higher price; aftermarket direct-fit options save money while still fitting properly.
Where to buy and pricing considerations
Where you shop affects both price and guarantees. Consider these sources and their typical characteristics when budgeting for a 2004 Accord catalytic converter.
- Authorized Honda dealer: higher price, but guaranteed compatibility and warranty.
- Auto parts chains (AutoZone, O'Reilly, Advance Auto): a mix of OEM and aftermarket direct-fit options with warranties varying by brand.
- Online retailers (RockAuto, PartsGeek, Amazon): often the widest range of brands and prices; verify part numbers and compatibility with your VIN.
- Salvage yards / used parts suppliers: lowest upfront cost but higher risk of wear, corrosion, or uncertain reliability.
When shopping, match the part number to your VIN, confirm whether one or two cats are needed, and check emissions requirements in your area. Warranty length and return policies are also important considerations.
Labor and installation considerations
Labor costs vary by region and shop, but you can generally expect installation to take between 1 and 3 hours. Professional installation typically runs around 100–300 dollars in many markets, with higher rates for complex dual-cat setups or if additional exhaust work is required. If you choose a universal converter, budget for potential fabrication time and material costs.
Summary
For a 2004 Honda Accord, catalytic converter pricing hinges on engine type, the number of converters, and the seller. Expect roughly 150–600 dollars for aftermarket direct-fit parts, and 500–1,500 dollars for OEM dealer replacements, with labor adding about 100–300 dollars. To get the best value, confirm compatibility with your VIN, consider emissions requirements in your area, and weigh the trade-offs between OEM fit and aftermarket savings. A well-chosen converter can restore performance and pass inspections without unnecessary expense.
By staying informed about your car’s specific configuration and shopping across trusted sources, you can navigate the price landscape for a 2004 Honda Accord catalytic converter more effectively.


