Daysyore Direct-Fit Catalytic Converter 40234 for 1998-2002 Honda Accord DX/EX/LX 2.3L EPA Approved

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  • It is legal if your vehicle meets Federal EPA standards ONLY.
  • It is disabled if your vehicle is registered in CA, NY, CO & ME.
  • It is available if your vehicle meets California requirements, but is not registered in CA, NY, CO & ME.

Check Before Replacement

  1. Retrieve / repair all PCM trouble codes and updates.
  2. Repair all exhaust leaks and internal coolant leaks.
  3. Check for fuel control.
  4. Ensure the full and correct parts for use.

How to Replace

1. Remove the original converter.
2. Insert supplied gaskets to the correct position of the new converter.
3. Put the new converter in place.
4. Tighten all the bolts.
5. Reconnect the oxygen sensor.
6. Start engine and check for exhaust leaks.

HONDA ACCORD DX 1998-2002 2.3L
HONDA ACCORD EX 1998-2002 2.3L
HONDA ACCORD LX 1998-2002 2.3L
HONDA ACCORD SE 2000/2002 2.3L
Material Stainless Steel & Ceramic
Part Number 40234
Weight 3.5 kg
Year 1998-2002
Make Honda
Warranty 12 Months

Returns Policy

Thanks for choosing Daysyore. All of our Daysyore products are strictly tested by our quality inspection team before shipment, if you find any quality issue, please email us at

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

The refund will be processed within 7 working days after the receipt and validation of return. Please check your account then.


Do you ship internationally?

NO, We have our own warehouse in the United States and we only ship to the United States.

How much is the shipping?

Free shipping on all items

Shipping method?


Shipping Time?

Processing time: 1-3 Business days

Shipping time: US: 3-5 Business days

Will this fit my car?
The product is compatible with HONDA, and there is a compatibility list as a guide on the page of Vehicle Fitment for you. If you are still uncertain, please contact with the customer service.

O₂ sensor plug direction? pre cat or post cat?
The cat isn't directional, so you can flip it around either way, as long as the O₂ sensor plug is conveniently located with the O₂ sensor.

Is it approved by California?
Sorry, no. It is prohibited from sale in California, Colorado, Maine, and New York due to State emissions regulations.

Welded or flanged?
Both ends adopt convenient flange design, so you can directly install the bolts on the connections without complicated cutting or welding.

What to do if check engine light comes on?
Ensure that the gas and oil caps are on tight and that the oil dipstick is seated correctly. If the light remains on, it could be triggered by a faulty oxygen sensor, wrong installation of catalytic converter, bad spark plugs, malfunctioning thermostat or bad mass air flow sensor. If none of the above is true, please contact with the customer service ASAP.

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