Walker 250-22010 Oxygen Sensor - Downstream or Upstream

Walker Products OE Oxygen Sensor 250-22010

Walker Products OE 250-22010 is a specific-fit oxygen sensor engineered for direct replacement in select Toyota applications. It is built to provide the ECU with the exhaust feedback needed for proper fuel control and emissions monitoring, making it a practical choice when diagnosing a check engine light, poor fuel economy, or drivability concerns.

Key Features

• Specific-fit oxygen sensor for targeted Toyota applications
• Non-heated design with 2-wire configuration
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon male connector for application-specific connection
• Wiring harness length: 9.37 in.; overall length: 12.91 in.
• Walker Products OE line replacement part number 250-22010

Walker Products OE Replacement Design

The Walker Products OE line focuses on application-specific engine management sensors built to match the required fitment position and diagnostic feedback expected by the vehicle ECU. Part number 250-22010 is a non-heated oxygen sensor designed for upstream and downstream positions where listed, including Toyota Celica, Toyota Paseo, Toyota Tercel, and Toyota RAV4 coverage across 1994-1999 model years. This makes it a relevant replacement for drivers searching for a Toyota Celica downstream oxygen sensor, a Toyota RAV4 downstream O2 sensor, or a Toyota Tercel upstream oxygen sensor.

Walker Products has supplied engine management and fuel system components since 1946 and manufactures to automotive ISO 9001/TS 16949 standards. The 250-22010 oxygen sensor is intended to restore accurate exhaust signal reporting to the ECU when the original sensor has aged, been damaged, or triggered fault codes.

Common Problems This Sensor May Address

• Check engine light related to oxygen sensor performance
• Poor fuel economy caused by inaccurate exhaust feedback
• Rough running or inconsistent air-fuel control
• Higher exhaust emissions from a failing sensor
• Fault codes stored in the ECU for affected sensor circuits

Installation Notes

Confirm the exact position before ordering, since this part is listed for both upstream and downstream applications depending on vehicle and emissions package. For Toyota RAV4 coverage, verify California and non-California emissions details as shown in the fitment notes. Inspect the sensor wiring harness and connector for damage before installation, and compare the connector shape, thread diameter, and harness length to the original part.

• Fits 1994 Toyota Celica, downstream
• Fits 1995-1999 Toyota Celica, downstream
• Fits 1996 Toyota RAV4, downstream
• Fits 1997 Toyota RAV4, downstream
• Fits 1997-1998 Toyota Paseo, upstream
• Fits 1997-1998 Toyota Tercel, upstream

Quality Assurance

Walker Products OE sensors are manufactured as OE-style replacement parts for specific applications and fitment positions. Part number 250-22010 is produced under Walker Products’ automotive quality systems to support accurate ECU feedback in the listed Toyota applications.