Is the DENSO 234-2003 a direct-fit sensor?

Yes. It comes with a factory-style connector and threads into the stock bung, so no splicing is needed. Confirm the part number fits your vehicle before ordering.

Upstream or downstream?

That depends on the vehicle. The 234-2003 is listed for specific positions on specific models, so check the fitment for your car's bank and sensor location.

Will it clear my check-engine light?

It clears codes caused by a failed sensor, such as heater or response codes. If the code comes from wiring, an exhaust leak or a rich-running engine, a new sensor will not fix it.

How does it compare with a universal O2 sensor?

Universal sensors need wire splicing and connector reuse. This one plugs in as-is, which saves install time and avoids wiring mistakes, at the cost of being vehicle-specific.

What tools do I need to install it?

An O2 sensor socket or a slotted wrench, plus penetrating oil for a rusted bung. Follow the thread and torque guidance for your vehicle.

Does it come with anything else in the box?

It is sold as the sensor itself with its connector. No socket or thread lubricant is included, so have those on hand before you start.

Where is the DENSO Oxygen Sensor 234-2003 cheapest?

At Amazon, for $46.45, as of our latest check.

Where can I buy the DENSO Oxygen Sensor 234-2003?

2 stores we checked sell it, including IPW AUTO PARTS, Amazon.

DENSO Oxygen Sensor 234-2003

Best price now

$46.45at AmazonChecked Nov 12

Compared across 2 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. As an Amazon Associate, Deal.ai earns from qualifying purchases.

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