Oxygen Sensor for 2015-2020 Honda Fit & More - Walker 350-34168

Keep the engine-management loop reporting accurately with the Walker Products oxygen sensor 350-34168, a 4-wire, direct-fit narrow-band sensor built as an OE replacement. It installs in the downstream position and fits many vehicles, among them the 2015-2020 Honda Fit, 2016 Honda City and 2011-2016 Honda CR-Z; see the "Vehicles it fits" section for the full list.

An oxygen sensor reads the amount of oxygen left in the exhaust gas so the ECU can monitor the air-fuel ratio and combustion efficiency. Part number 350-34168 (also written 35034168) is manufactured for its specific application and fitment position to provide the diagnostic feedback the ECU expects.

• 4-wire narrow-band design: measures the oxygen content of the exhaust gas to help the ECU manage the air-fuel ratio.
• Gas-permeable platinum electrodes: the sensing element is coated with a gas-permeable platinum layer.
• Protective coating: guards the electrode surfaces against contamination and erosion from combustion residue and particulates in the exhaust.
• Emissions monitoring: reports exhaust-gas readings that the ECU uses to help control pollutants.

If a failed oxygen sensor is the cause of a rough-running engine, higher fuel consumption, or an illuminated malfunction indicator lamp (MIL), replacing it addresses that circuit — inspect the sensor, wiring harness, and connector for physical damage before installing.