Walker 250-54069 Oxygen Sensor - Upstream or Upstream Front

Walker Products OE Oxygen Sensor for OE Fitment

Walker Products OE part number 250-54069 is a heated oxygen sensor built for specific vehicle applications and exact mounting positions. It is engineered to deliver the feedback the ECU expects, helping maintain proper air-fuel control and emissions monitoring on supported Scion xB and Lexus RX350 models.

Key Features

• Heated oxygen sensor for faster operating response
• Specific-fit design for the correct application and position
• 4-wire configuration with male connector
• Threaded mounting type with 18.0 mm thread diameter
• Wiring harness length: 15.28 in.; overall length: 18.82 in.
• Radiused polygon connector shape for OE-style connection

Product Details

Walker Products OE sensors are developed as original-equipment replacement parts for a wide range of vehicles. Part number 250-54069 is designed around the required fitment position and sensor feedback characteristics, making it a direct replacement choice for upstream oxygen sensor service on 2011-2015 Scion xB and 2011-2012 Lexus RX350 applications. Walker Products OE focuses on application-specific engine management components, and this sensor follows that approach with the correct harness length, wire gauge, connector style, and threaded mount.

Walker Products OE 250-54069 is a practical option when diagnosing exhaust feedback issues on a Scion xB upstream oxygen sensor location or a Lexus RX350 upstream front sensor location. The part number 250-54069 is also a useful reference when searching for an OE-style replacement oxygen sensor for these vehicles.

Vehicle Fitment

• Fits 2011-2015 Scion xB, Upstream. Notes: Bank 1 Sensor 1 needs an upstream oxygen sensor; Walker Products OE.
• Fits 2011-2015 Scion xB, Upstream. Notes: Front oxygen sensor compatible with various vehicle models; Walker Products OE.
• Fits 2011-2012 Lexus RX350, Upstream Front. Notes: Front upstream oxygen sensor needed for proper functionality near exhaust manifold; Walker Products OE.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor engine operation caused by incorrect exhaust feedback
• Increased fuel consumption from inaccurate air-fuel correction
• Higher exhaust emissions from a failing upstream sensor
• Fault codes stored in the ECU for sensor-related issues

Installation Notes and Tips

Before replacement, inspect the sensor, wiring harness, and connector for heat damage, abrasion, or corrosion. Confirm the mounting position and thread size match the vehicle application, and verify the connector orientation before installation. For best results, clear stored fault codes after repair and confirm the ECU returns to normal sensor feedback.

Quality Assurance

Walker Products has produced engine management components since 1946 and operates with ISO 9001 / TS 16949 quality system certification. This OE line is built for application-specific fitment and diagnostic feedback requirements.