Walker 350-33076 Oxygen Sensor

Walker 350-33076 Oxygen Sensor Overview

Walker Products 350-33076 is a heated oxygen sensor built as a specific-fit replacement for select Nissan and INFINITI applications. It is engineered for upstream locations and provides the ECU with the exhaust feedback needed for accurate fuel control and emissions monitoring.

Compatible With 2000-2001 INFINITI G20, 2000-2001 INFINITI I30, 2000-2001 Nissan Altima, 2000-2001 Nissan Frontier, 2000-2001 Nissan Maxima, and 2000-2001 Nissan Sentra in the listed upstream positions.

Key Features

• Heated oxygen sensor design for faster operating temperature
• Specific-fit application for the listed vehicle positions
• Threaded mounting type with 18.0 mm thread diameter
• 3-wire configuration with 20-gauge wiring
• Radiused polygon male connector for application-specific connection
• Wiring harness length: 12.91; overall length: 16.46

Application Details

This Walker Products Aftermarket sensor line is developed as an OE-style replacement for engine management systems that rely on precise air-fuel feedback. The Walker 350-33076 is intended for upstream sensor locations, including Bank 1 Sensor 1 and front/upstream positions shown in the fitment data. For 2000-2001 Nissan Altima, 2000-2001 INFINITI G20, and related applications, correct sensor feedback helps the ECU maintain proper mixture control and monitor emissions performance.

This part cross-references no listed interchange numbers in the provided data.

What It Helps Address

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

Installation Notes

Verify the exact position before installation, since this part is listed for upstream, upstream front, upstream right, and upstream left applications depending on vehicle and emissions package. Inspect the sensor wiring harness and connector for damage before replacement, and confirm the threaded mounting location matches the original sensor. On affected vehicles, check stored ECU fault codes to confirm the source of the concern.

Quality Assurance

Walker Products states that its engine management and oxygen/air-fuel sensors are engineered for specific applications and manufactured under ISO 9001/TS 16949-certified processes. Part number 350-33076 is part of the Walker Products Aftermarket line, supported by the company’s long-running focus on engine management and fuel system components.