Give your engine computer an accurate read on exhaust oxygen with the Walker Products 350-34043 Oxygen Sensor. This 4-wire, direct-fit, narrow-band sensor measures combustion efficiency from the amount of oxygen in the exhaust gas. It fits many vehicles, among them the 1998-2001 Chevrolet Metro, 1998-2000 Chevrolet Tracker and 1995-2000 Pontiac Firefly. See the Buyer's Guide tab for the full list.
Walker Products developed its engine management and oxygen/air-fuel sensors as OE replacements. Each part number is built for its specific application and fitment position, so it provides the diagnostic feedback the ECU requires. This sensor is cataloged for upstream and downstream positions.
- Exhaust monitoring: Determines the oxygen content of the exhaust gas and monitors the air-fuel ratio for combustion efficiency.
- Mixture control: Its oxygen readings help the engine computer fine-tune the air-fuel mixture, supporting normal fuel economy and emissions control.
- Platinum electrodes: The electrodes are made of a gas-permeable platinum layer.
- Protective coating: Helps prevent contamination and erosion of the electrode surfaces by combustion residue and particulates in the exhaust.
A failed oxygen sensor may cause the engine to run poorly or raise fuel consumption and exhaust emissions. It may also turn on the malfunction indicator light (MIL), and newer vehicles may store related fault codes in the ECU. If the sensor is the cause, this unit replaces it. Walker also advises checking the sensor, wiring harness and connector for physical damage.
This Walker Products oxygen sensor comes from a company that has supplied engine management sensors and fuel system components since 1946. Walker Products is an ISO 9001/TS 16949 certified company.
