Walker 350-34694 Oxygen Sensor

Walker 350-34694 Oxygen Sensor Overview

Walker Products 350-34694 is a heated oxygen sensor built as a direct OE-style replacement for specific GM van and SUV applications. It is engineered for the correct fitment position and ECU feedback, helping maintain accurate air-fuel monitoring on vehicles such as the Chevrolet Express 2500 and GMC Savana 3500.

Walker Products Aftermarket focuses on engine management and oxygen sensor coverage for late-model and older applications. The 350-34694 follows the brand’s application-specific approach, with the proper connector style, threaded mounting, and harness configuration for the listed upstream and downstream positions.

Key Features

• Heated oxygen sensor for precise exhaust feedback
• Specific-fit design for listed Chevrolet and GMC applications
• 4-wire configuration with 20-gauge wiring
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon male connector for application-specific connection
• Wiring harness length: 12.32 in.
• Overall length: 15.87 in.

Detailed Description

Walker Products part number 350-34694 is designed for oxygen sensor replacement where accurate ECU signal input is required. This sensor is listed for upstream right, upstream left, and downstream positions across select 2006-2015 Chevrolet Express, Chevrolet Silverado 1500 Classic, Chevrolet Tahoe, Chevrolet Suburban 1500, GMC Savana, GMC Sierra 1500 Classic, GMC Yukon, and GMC Yukon XL 1500 applications. It is also listed for the 2010-2011 Chevrolet Captiva Sport downstream position.

For buyers searching for a replacement oxygen sensor for Chevrolet Express 2500 upstream left, GMC Savana 3500 upstream right, or a downstream oxygen sensor for Chevrolet Tahoe and GMC Yukon, this part number provides a direct-fit option matched to the vehicle’s sensor location and connector requirements. Walker Products 350-34694 is built to support the diagnostic feedback expected by the ECU on the covered applications.

What This Sensor Helps Address

• Check engine light related to oxygen sensor performance
• Rough engine operation caused by incorrect exhaust feedback
• Increased fuel consumption from inaccurate air-fuel readings
• Higher exhaust emissions from a failing sensor
• Fault codes stored in the ECU for the affected sensor circuit

Installation Notes and Tips

Confirm the vehicle year, make, model, and sensor position before ordering. This part is listed for specific upstream and downstream locations, so match the bank and sensor number to the original unit. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion before installation, since damaged wiring can shorten sensor life and affect readings.

For fitment searches, use phrases such as “Fits 2007-2014 Chevrolet Express 1500, upstream left” or “Fits 2006 GMC Yukon, downstream left” to verify the exact application. This part number is 350-34694.

Quality Assurance

Walker Products has manufactured engine management components since 1946 and operates with Automotive ISO9001/TS 16949 certification. The 350-34694 is produced as an OE replacement oxygen sensor for the listed applications, with application-specific fitment and ECU feedback requirements in mind. This part cross-references no additional part numbers in the provided data.