Walker 350-34262 Oxygen Sensor - Upstream

Walker 350-34262 Oxygen Sensor Overview

Walker Products 350-34262 is a specific-fit heated oxygen sensor engineered for OE-style replacement on select Chevrolet Aveo, Chevrolet Aveo5, Pontiac G3, and Pontiac G3 Wave applications. It is built for upstream placement and provides the ECU with the feedback needed for accurate fuel control and emissions monitoring.

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors for application-specific fitment. The 350-34262 follows that approach with a threaded, 18.0 mm sensor body, 4-wire heated design, and a male radiused-polygon connector for the listed vehicles.

Key Features

• Heated oxygen sensor for upstream installation
• Specific-fit design for the listed vehicle applications
• 4-wire configuration with 22-gauge wiring
• Threaded mounting type with 18.0 mm thread diameter
• Overall length: 14.88 in.; wiring harness length: 11.34 in.
• Male connector with radiused polygon shape

Detailed Description

The Walker 350-34262 oxygen sensor is designed for upstream exhaust monitoring on 2009-2011 Chevrolet Aveo and Aveo5 models, plus 2009-2010 Pontiac G3 and 2009 Pontiac G3 Wave applications. As an upstream oxygen sensor, it helps the engine control module monitor exhaust oxygen content so the ECU can adjust air-fuel delivery and maintain proper system feedback. This part number is a direct-fit style replacement for the specified positions and vehicle configurations.

Fits 2009-2011 Chevrolet Aveo, Upstream. Fits 2009-2011 Chevrolet Aveo5, Upstream. Fits 2009-2010 Pontiac G3, Upstream. Fits 2009 Pontiac G3 Wave, Upstream. Walker 350-34262 is a practical choice when replacing a front oxygen sensor on these compact GM applications.

What It Helps Address

• Check engine light related to upstream oxygen sensor faults
• Poor fuel economy caused by inaccurate exhaust feedback
• Rough engine operation from incorrect air-fuel correction
• Elevated exhaust emissions from a failing sensor
• Diagnostic trouble codes stored in the ECU for sensor-related issues

Installation Notes and Tips

Confirm the sensor position before ordering; this part is for upstream use only. Inspect the sensor wiring harness and connector for heat damage, corrosion, or physical wear before installation, since damaged wiring can shorten sensor life and affect readings. Verify the 18.0 mm threaded mounting point and connector style match the vehicle before replacement.

Quality Assurance

Walker Products has manufactured engine management components since 1946 and operates as an ISO 9001/TS 16949 certified company. The 350-34262 is built as an OE-style replacement sensor for the listed applications and is backed by Walker Products’ established manufacturing and catalog support processes.