Walker Products Oxygen Sensor P/N:250-24618

Keep the engine control module reading accurate exhaust data with the Walker Products Oxygen Sensor 250-24618. This four-wire, heated narrow-band sensor is engineered as a direct-fit, OE-replacement unit and drops in for the 1996-1999 Saturn SC1, SC2, SL, SL1, SL2, SW1, and SW2 equipped with the L4-1.9L engine. An oxygen sensor measures combustion efficiency based on the amount of oxygen in the exhaust gas; in its downstream position it reads the exhaust after the catalytic converter and feeds that signal back to the ECU.

• Platinum electrodes: coated with a gas-permeable platinum layer.
• Protective coating: helps prevent contamination and erosion of the electrode surfaces from combustion residue and particulates in the exhaust.
• Air-fuel feedback: measures oxygen levels to help the ECU fine-tune the air-fuel mixture, supporting normal fuel economy.
• Heated four-wire design: brings the sensor to operating temperature so it can monitor exhaust gases quickly.

Signs this sensor may need replacing include an engine that runs poorly, increased fuel consumption, higher emissions, or an illuminated malfunction indicator lamp (MIL); also inspect the sensor, wiring harness, and connector for physical damage. Made in the United States. Manufacturer part number 250-24618.