Walker 350-34382 Oxygen Sensor - Center or Downstream

Walker 350-34382 Oxygen Sensor Overview

Walker Products 350-34382 is a heated oxygen sensor built as a specific-fit OE-style replacement for select Nissan and INFINITI applications. It is engineered for the correct mounting position and ECU feedback, helping maintain accurate exhaust monitoring on vehicles such as the Nissan Sentra, Nissan Altima, and INFINITI G20.

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors for direct application fitment. The 350-34382 follows that approach with a threaded, heated design and vehicle-specific connector configuration for the listed downstream and center positions.

Key Features

• Heated oxygen sensor for precise exhaust feedback
• Specific fitment for listed Nissan and INFINITI applications
• Threaded mounting type with 18.0 mm thread diameter
• 4-wire design with 20-gauge wiring
• Radiused polygon male connector for application-specific connection
• Wiring harness length: 11.73 in.
• Overall length: 15.28 in.

Detailed Description

Walker 350-34382 is designed for vehicles that require a direct replacement oxygen sensor in the correct location, including downstream and center positions. Confirmed fitment includes 2002 Nissan Sentra center, 2000-2001 Nissan Sentra downstream, 2000 Nissan Altima downstream, and 2000-2001 INFINITI G20 downstream applications. This part number is also listed for bank 1 sensor 2 service on specific vehicle models, making it a practical choice when replacing a failed downstream sensor on the affected platform.

As an OE-replacement sensor, this Walker Products Aftermarket part is intended to restore proper diagnostic feedback to the ECU. The 350-34382 is a strong match for searches such as downstream oxygen sensor for 2000 Nissan Altima, 2001 INFINITI G20 B1S2 sensor, and 2000-2001 Nissan Sentra CA Series oxygen sensor replacement.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor fuel economy caused by inaccurate exhaust readings
• Elevated exhaust emissions from a failing sensor
• Rough engine operation tied to incorrect air-fuel feedback
• Stored ECU fault codes for the affected sensor circuit

Installation Notes

Before replacement, inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion. Verify the mounting position, thread size, and connector style against the original sensor before installation. Because this is a specific-fit part, correct application matching is important for proper ECU feedback on the listed Nissan Sentra, Nissan Altima, and INFINITI G20 vehicles.

Quality Assurance

Walker Products has been producing engine management components since 1946 and operates as an Automotive ISO9001/TS 16949 certified company. The 350-34382 is built to support the diagnostic requirements of the listed applications with application-specific fitment and sensor output.