Walker Products Oxygen Sensor P/N:350-34043

Keep your engine's fuel control reading true with the Walker Products Oxygen Sensor 350-34043, a 4-wire, narrow-band, direct-fit Tracker sensor that gauges combustion efficiency from the amount of oxygen in the exhaust gas. It installs as a direct-fit replacement for the 1998-2000 Chevrolet Tracker, 1994-1997 Geo Tracker and Geo Metro, 1998-2001 Chevrolet Metro, plus Suzuki Sidekick, Esteem, Swift, Vitara and X-90 and Pontiac Firefly and Sunrunner applications — see the Buyer's Guide tab for the full list.

• Narrow-band, 4-wire design: determines the oxygen content of the exhaust gas so the ECU can monitor the air-fuel ratio for combustion efficiency.
• Platinum electrodes: electrodes 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 gases.
• Upstream or downstream: cataloged for both upstream and downstream sensor positions on the listed applications.

By feeding the ECU accurate oxygen readings, the sensor supports proper air-fuel mixture control for combustion efficiency and normal fuel economy. A worn or failed sensor can make the engine run poorly, raise fuel consumption and emissions, or trigger the malfunction indicator lamp (MIL); if a faulty oxygen sensor is the cause, this direct-fit unit replaces it. Built by Walker Products as an OE-style replacement made for the specific application and fitment position.