Walker 250-23104 Oxygen Sensor

Walker OE Oxygen Sensor for Nissan and Infiniti

Walker Products OE oxygen sensor Part Number 250-23104 is a direct-fit, heated sensor built for specific upstream applications on select Nissan and Infiniti vehicles. It is engineered to deliver the ECU feedback needed for accurate fuel control, emissions monitoring, and fault-code diagnosis.

Key Features

• Heated oxygen sensor with 3-wire design
• Specific-fit application for the correct mounting position
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon male connector for OE-style connection
• 27.28 in. wiring harness length and 30.83 in. overall length
• 20-gauge wiring for engine management signal delivery

Walker Products OE Line Details

Walker Products OE focuses on replacement engine management sensors built for application-specific fitment and diagnostic feedback. The 250-23104 oxygen sensor follows that OE-style approach for upstream positions on vehicles such as the 1995-1999 Infiniti J30, 1996-1998 Infiniti I30, and 1995-1999 Nissan Maxima.

Detailed Description

This Walker oxygen sensor is designed for upstream placement, including front, rear, left, and right positions listed in the fitment data. It supports the air-fuel feedback the ECU uses to manage combustion efficiency and emissions performance. For drivers diagnosing a check engine light, poor fuel economy, rough running, or elevated exhaust emissions, a failing oxygen sensor is often one of the first components to inspect along with the wiring harness and connector. Part Number 250-23104 is built for specific applications rather than universal use, which helps match the correct sensor location and connector style on compatible Nissan Maxima, Infiniti I30, and Infiniti J30 models.

What It Helps Address

• Check engine light related to oxygen sensor circuit faults
• Rich or lean fuel mixture concerns
• Poor fuel economy caused by inaccurate exhaust feedback
• Rough engine operation from incorrect ECU sensor input
• Higher exhaust emissions from a worn upstream sensor

Installation Notes and Tips

• Verify the exact year, model, and sensor position before ordering.
• Inspect the sensor wiring harness and connector for heat damage or corrosion before installation.
• Confirm the threaded mounting location and connector orientation match the vehicle.
• Use the fitment notes to distinguish between California and non-California emissions applications.
• For best results, clear stored fault codes after installation and confirm proper ECU feedback.

Quality Assurance

Walker Products has supplied engine management and fuel system components since 1946 and manufactures to automotive ISO 9001/TS 16949 standards. Part Number 250-23104 is built as an OE-style replacement oxygen sensor for the listed upstream Nissan and Infiniti applications.