Keep your engine's fuel management dialed in with the Walker Products Oxygen Sensor 250-24275, a 4-wire heated narrow-band sensor that measures the oxygen content of the exhaust gas so the ECU can monitor the air-fuel ratio for combustion efficiency. It drops in as a direct-fit replacement for the 1996-2001 Chevrolet Cavalier (L4-2.2L) and the 1999-2001 Pontiac Sunfire (L4-2.2L).
Signs the sensor may need replacing include an engine running poorly, higher fuel consumption or emissions, or an illuminated malfunction indicator lamp (MIL); the sensor, wiring harness, and connector should also be checked for physical damage. If a failed oxygen sensor is the cause, this replaces it — diagnose the cause before replacing. Made in the United States. Manufacturer part number 250-24275 (also 25024275).
What does this oxygen sensor do?
It measures the amount of oxygen in the exhaust gas so the ECU can monitor the air-fuel ratio for combustion efficiency and help fine-tune the air-fuel mixture.
Which vehicles does the 250-24275 fit?
It is a direct-fit replacement for the 1996-2001 Chevrolet Cavalier (L4-2.2L) and the 1999-2001 Pontiac Sunfire (L4-2.2L). See the Buyer's Guide tab to confirm your vehicle.
How many wires does this sensor have, and is it heated?
It is a 4-wire heated narrow-band oxygen sensor, per the catalog attributes (Wire Quantity: 4, Heated: Yes, Sensor Type: Narrow-Band).
What are the signs the oxygen sensor may need replacing?
Common signs are an engine running poorly, increased fuel consumption or emissions, or an illuminated MIL. Diagnose the cause first, since these symptoms can have other sources.
Where is it made and what wrench size is needed?
It is made in the United States and uses a threaded mounting with a 22 mm wrench size for 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.
