Walker 350-34571 Oxygen Sensor - Downstream Left or Downstream Right

Walker 350-34571 Oxygen Sensor for OE Replacement

Walker Products 350-34571 is a heated oxygen sensor built for specific-fit replacement on select Infiniti and Nissan applications. It is engineered to provide the ECU with the feedback needed for proper fuel control and emissions monitoring.

Key Features

• Specific-fit heated oxygen sensor for direct application matching
• 4-wire design with female connector and radiused polygon connector shape
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 26.3; overall length: 29.84
• Walker Products Aftermarket engine management sensor line

Detailed Description

Walker Products 350-34571 is part of the Walker Products Aftermarket engine management and oxygen/air-fuel sensor line, developed as an OE-style replacement for vehicles that require accurate exhaust feedback to the ECU. This heated oxygen sensor is built as a specific-fit unit with the correct connector style, wire count, and threaded mounting configuration for the listed applications. It is used on 1995 Infiniti Q45 downstream right, 1996 Infiniti Q45 downstream right, 1995 Nissan 300ZX downstream right, 1996 Nissan 300ZX downstream right, and 1996 Nissan 300ZX downstream left. For buyers searching for a 1996 Nissan 300ZX downstream oxygen sensor or a 1995 Infiniti Q45 downstream right oxygen sensor, part number 350-34571 matches the listed positions.

Walker Products has supplied engine management components since 1946 and manufactures sensors for application-specific fitment and ECU feedback requirements. This part number 350-34571 is intended for direct replacement use where the original sensor uses a heated, threaded, 4-wire configuration.

What It Helps Address

• Check engine light or MIL illumination related to oxygen sensor performance
• Poor fuel economy caused by incorrect exhaust feedback
• Rough engine operation from inaccurate air-fuel correction
• Elevated exhaust emissions from a failing downstream sensor
• Fault codes stored in the ECU for the affected sensor circuit

Installation Notes and Tips

Verify the vehicle year, make, model, and sensor position before ordering. This sensor is listed for downstream right and downstream left positions only on the applications shown, so match the original connector, thread size, and harness routing before installation. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion, since physical damage can shorten sensor life and affect operation.

Quality Assurance

Walker Products is an Automotive ISO9001/TS 16949 certified company, and its sensor line is produced for application-specific replacement use. Part number 350-34571 is built to support the diagnostic feedback expected by the vehicle ECU on the listed Infiniti and Nissan applications.