Walker 250-241296 Oxygen Sensor - Downstream Right

OE Base Oxygen Sensor for Toyota and Lexus

Walker 250-241296 is a specific-fit, heated narrow-band oxygen sensor built for downstream right applications on select Toyota and Lexus vehicles. It is engineered to provide the ECU with the feedback needed for proper fuel control and emissions monitoring.

Fits 2021-2024 Toyota 4Runner, downstream right. Fits 2021 Lexus LX570, downstream right. Fits 2020 Lexus LX570, downstream right. Fits 2020 Toyota 4Runner, downstream right.

Key Features

• Heated narrow-band oxygen sensor for OE-style signal output
• Specific fitment for the listed downstream right applications
• 4-wire design with oblong female connector
• Male spade terminals, 4 terminal count
• M18 x 1.5 thread size with 22 mm wrench size
• Walker OE Base Sensor line for application-specific replacement coverage

Product Details

Walker Products 250-241296 is part of the OE Base Sensor line, which focuses on application-specific engine management sensors for direct replacement use. This oxygen sensor is matched to the listed vehicle, position, and connector style so it can deliver the diagnostic feedback expected by the engine control unit. For Toyota 4Runner and Lexus LX570 models, the downstream right sensor helps monitor exhaust stream conditions after the catalytic converter.

This part cross-references no listed interchange numbers for the same application.

Common Issues This Sensor Can Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel feedback to the ECU
• Rough running caused by inaccurate exhaust monitoring
• Increased fuel consumption from a failing sensor signal
• Higher exhaust emissions from degraded sensor response

Installation Notes

Confirm the downstream right location before installation and compare the connector, terminal style, and thread size to the original sensor. Inspect the sensor wiring harness and connector for heat damage, corrosion, or broken terminals, since those conditions can shorten sensor life and affect operation. Verify the vehicle build date on 2020 and 2021 applications, as the fitment notes specify coverage from 08/2019.

Quality Assurance

Walker Products has produced engine management and oxygen sensor components since 1946 and operates as an ISO 9001 / TS 16949 certified company. The 250-241296 is manufactured for the specified application to support the diagnostic feedback required by the ECU.