Walker 350-34428 Oxygen Sensor

Walker 350-34428 Oxygen Sensor Overview

Walker Products 350-34428 is a heated oxygen sensor built as a specific-fit OE replacement for select Cadillac, Chevrolet, Pontiac, and Suzuki applications. It is engineered for the correct mounting position and ECU feedback on vehicles that use a threaded upstream sensor design.

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors for direct replacement use. The 350-34428 follows that approach with application-specific fitment, a 4-wire heated design, and a connector layout matched to the vehicle harness.

Key Features

• Heated oxygen sensor for upstream exhaust monitoring
• Specific-fit design for confirmed vehicle applications
• 4-wire configuration with 22-gauge wiring
• Female connector with radiused polygon shape
• Threaded mounting type with 18.0 mm thread diameter
• Wiring harness length: 12.32 in.
• Overall length: 15.87 in.
• Walker Products part number 350-34428

Detailed Description

This oxygen sensor is designed for vehicles that rely on accurate exhaust oxygen feedback to manage fuel delivery and emissions control. It is a direct-fit replacement for upstream sensor locations on the Cadillac CTS, Cadillac STS, Cadillac SRX, Chevrolet Equinox, Pontiac Torrent, and Suzuki XL-7 within the listed model years and positions. For 2008 Cadillac CTS applications, it also covers direct-injection configurations in the upstream left and right positions.

Walker Products 350-34428 is built for the specific application, fitment position, and ECU diagnostic response required by the vehicle. If the original sensor is failing, the engine may run poorly, fuel consumption can increase, emissions can rise, and the malfunction indicator light may illuminate. The sensor, wiring harness, and connector should be inspected for damage when diagnosing the system. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Check engine light related to upstream oxygen sensor faults
• Rich or lean fuel mixture concerns
• Reduced fuel economy from inaccurate exhaust feedback
• Higher exhaust emissions during operation
• Poor engine performance tied to sensor signal issues

Installation Notes and Tips

• Confirm the exact year, make, model, and sensor position before ordering.
• Use the listed upstream front, upstream rear, upstream left, or upstream right location as specified for the vehicle.
• Inspect the connector and harness for heat damage, corrosion, or broken wiring before installation.
• Verify thread size and mounting style match the original sensor.
• Clear stored fault codes after repair and confirm proper ECU feedback.

Quality Assurance

Walker Products is an Automotive ISO9001/TS 16949 certified company with a long history in engine management and fuel system components. The 350-34428 is manufactured as an OE-style replacement sensor for the listed applications.