Walker 250-24623 Oxygen Sensor

OE Oxygen Sensor for Lexus and Toyota

Walker Products OE Oxygen Sensor Part Number 250-24623 is a heated, specific-fit replacement built for downstream applications on select Lexus and Toyota vehicles. It is engineered to deliver the ECU feedback needed for proper fuel control and emissions monitoring, making it a direct-fit option for service work on models such as the Lexus IS350, RC F, and Toyota Prius.

Key Features

• Heated oxygen sensor for faster operating response
• Specific-fit design for the listed downstream positions
• 4-wire configuration with male connector
• Threaded mounting with 18.0 mm thread diameter
• 24.33 in. wiring harness length and 27.87 in. overall length
• Radiused polygon connector shape for application-specific fitment

Walker Products OE Line Details

Walker Products OE focuses on original-equipment-style replacement sensors for vehicle-specific applications. Part number 250-24623 is built to match the required fitment position and provide the diagnostic signal the ECU expects, which is important on modern vehicles that store fault codes when an oxygen sensor begins to fail.

Detailed Description

This Walker Products oxygen sensor is designed for downstream use on a wide range of Lexus and Toyota applications, including Lexus GS F, LS460, RC350, IS250, and Toyota Celica, Prius, and Sienna models. As a heated sensor with threaded mounting and a vehicle-specific connector, it is intended to restore accurate exhaust feedback after a failed original sensor has caused drivability or emissions concerns. Walker Products has supplied engine management components since 1946 and manufactures OE-style sensors for precise application matching.

What It Helps Address

• Check engine light or malfunction indicator light related to oxygen sensor performance
• Poor fuel economy caused by incorrect exhaust feedback
• Rough engine operation from inaccurate air-fuel monitoring
• Increased exhaust emissions from a failing downstream sensor
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes and Tips

Verify the vehicle’s build date, bank, and sensor position before ordering, especially on Lexus IS300, RC300, RC350, GS350, and LS460 applications where fitment changes by production month. Inspect the sensor wiring harness and connector for heat damage or abrasion before installation. This part cross-references Denso 234-9005 and NTK 24300 for the same application.

Quality Assurance

Walker Products OE sensors are manufactured for specific vehicle applications and fitment positions, with the goal of providing the diagnostic feedback required by the ECU. The brand is ISO 9001/TS 16949 certified, supporting consistent production standards for emissions control service parts.