Keep the ECU reading an accurate air-fuel signal with the Walker Products Oxygen Sensor 350-34230, a 4-wire, heated, narrow-band sensor that installs as a direct-fit replacement for the 2005-2006 Acura RSX (L4-2.0L), 2003-2005 Honda Civic (L4-1.3L), and 2001-2005 Honda Civic (L4-1.7L). The sensor measures combustion efficiency based on the amount of oxygen in the exhaust gas.
By monitoring exhaust oxygen, the sensor helps the ECU fine-tune the air-fuel mixture, which supports fuel economy and lower emissions. A failing sensor may make itself known by an engine that runs poorly, increased fuel consumption, higher emissions, or an illuminated malfunction indicator light (MIL) — if a failed oxygen sensor is the cause, this replaces it. Inspect the sensor, wiring harness, and connector for physical damage as well. Manufacturer part number 350-34230 (also 35034230). Country of origin: China.
What vehicles does this oxygen sensor fit?
It's a direct-fit replacement for the 2005-2006 Acura RSX (L4-2.0L), 2003-2005 Honda Civic (L4-1.3L), and 2001-2005 Honda Civic (L4-1.7L). See the Buyer's Guide tab to confirm your vehicle.
How many wires does it have and is it heated?
It's a 4-wire, heated, narrow-band oxygen sensor with a square female spade connector and a threaded mount.
What does an oxygen sensor do?
It measures the oxygen content of the exhaust gas so the ECU can monitor the air-fuel ratio and combustion efficiency, helping fine-tune the mixture.
What are signs my oxygen sensor may need replacing?
An engine running poorly, increased fuel consumption, higher emissions, or an illuminated malfunction indicator light (MIL). Diagnose the cause first, as these signs can have other sources.
What wrench size is needed to install it?
It uses a 22 mm wrench size and a threaded mount. Also inspect the wiring harness and connector for physical damage during installation.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
