Walker 250-54007 Oxygen Sensor

OE Oxygen Sensor for Toyota and Lexus

Walker Products OE 250-54007 is a heated oxygen sensor built for specific vehicle applications and exhaust positions. It is engineered as an OE-style replacement for select Toyota, Lexus, Scion, and Pontiac models, with fitment matched to the ECU feedback requirements of the application.

For drivers diagnosing a check engine light, poor fuel economy, or elevated emissions, this oxygen sensor provides the correct upstream signal for the engine management system. The Walker Products OE line focuses on application-specific fitment, making 250-54007 a direct replacement choice for many Toyota Camry, Highlander, RAV4, and Lexus RX350 applications.

Key Features

• Heated oxygen sensor for faster operating response
• Specific-fit design for the listed vehicle applications
• 4-wire configuration with male connector
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 17.64 in.
• Overall length: 21.18 in.
• Radiused polygon connector shape
• Walker Products OE replacement part number 250-54007

Product Details

Walker Products OE sensors are developed as Original Equipment replacement parts for worldwide vehicle coverage. This part number is built for the exact application and mounting position listed in the fitment data, helping the ECU receive the correct oxygen sensor feedback for fuel control and emissions monitoring. The 250-54007 oxygen sensor is used in upstream positions across a wide range of Toyota and Lexus platforms, including front, rear, left, and right locations depending on the vehicle.

Fitment includes 2022 Lexus RX350 upstream right, 2022 Lexus RX450h upstream right, 2017-2020 Toyota Highlander upstream front, 2007-2011 Toyota Camry upstream front, 2006-2012 Toyota RAV4 upstream front, and 2007-2011 Toyota Sienna upstream front. It also covers additional applications such as Lexus ES350, RX350, RX450h, RX450hL, Toyota Avalon, Corolla, Matrix, Venza, Solara, and Scion tC.

This part cross-references no listed alternate part numbers in the provided data.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor fuel economy caused by incorrect exhaust feedback
• Elevated exhaust emissions
• Rough engine operation tied to sensor signal issues
• Fault codes stored in the ECU for affected sensor circuits

Installation Notes

Confirm the exact year, make, model, engine, and sensor position before ordering. This is a specific-fit oxygen sensor, so the upstream location must match the vehicle listing, including left, right, front, or rear where noted. Inspect the sensor wiring harness and connector for damage before installation, since damaged wiring can shorten service life and affect sensor operation.

Use the threaded mounting point and connector style specified for the application. For best results, verify the exhaust location and compare the old sensor’s connector shape, wire count, and harness length against the replacement part before installation.

Quality Assurance

Walker Products has supplied engine management and fuel system components since 1946 and manufactures OE-style replacement sensors under ISO 9001/TS 16949 quality standards. The Walker Products OE line is built around application-specific fitment and ECU feedback requirements for modern emissions systems.