Walker 350-34490 Oxygen Sensor - Downstream, Upstream Left or Upstream Right

Walker 350-34490 Oxygen Sensor Overview

Walker Products 350-34490 is a heated oxygen sensor built as a specific-fit OE replacement for select Cadillac ATS, Cadillac CTS, and Chevrolet Camaro applications. It is engineered to provide the ECU with the correct diagnostic feedback for upstream air-fuel control, helping maintain proper engine management on the vehicles listed below.

Walker Products Aftermarket focuses on application-specific engine management sensors, and this oxygen sensor follows that approach with the correct connector style, threaded mounting, and harness configuration for the intended position.

Key Features

• Heated oxygen sensor for upstream placement
• Specific-fit design for direct application matching
• 4-wire configuration with 22-gauge wiring
• Radiused polygon male connector
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 13.31 in.
• Overall length: 16.85 in.
• Walker Products part number 350-34490

Detailed Description

This Walker oxygen sensor is designed for upstream sensor positions where the engine control unit relies on accurate exhaust feedback to manage fuel delivery and emissions. It is listed for 2010-2019 Cadillac ATS, 2010-2019 Cadillac CTS, and 2010-2015 Chevrolet Camaro applications in upstream left and upstream right positions, including Bank 1 Sensor 1 and Bank 2 Sensor 1 references in the fitment notes. If you are searching for a 2014-2015 Chevrolet Camaro upstream oxygen sensor or a 2016-2018 Cadillac ATS upstream oxygen sensor, part number 350-34490 is the application-specific replacement to review.

Walker Products has built engine management and oxygen/air-fuel sensors as OE-style replacements for many vehicles worldwide, with manufacturing focused on the exact fitment position and ECU feedback required by the vehicle. Part number 350-34490 is part of the Walker Products Aftermarket line for drivers and technicians who need a direct-fit upstream sensor for these Cadillac and Chevrolet platforms.

What It Helps Address

• Check engine light related to upstream oxygen sensor faults
• Rough engine operation caused by incorrect air-fuel feedback
• Increased fuel consumption from inaccurate sensor readings
• Higher exhaust emissions from poor mixture control
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes and Tips

Before replacement, inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion. Confirm the vehicle position carefully, since this part is listed for upstream left and upstream right locations depending on the application. Verify the thread diameter, connector shape, and harness length against the original sensor before installation.

For fitment searches, this part is listed for 2010-2019 Cadillac ATS, upstream left and upstream right; 2010-2019 Cadillac CTS, upstream left and upstream right; and 2010-2015 Chevrolet Camaro, upstream left and upstream right.

Quality Assurance

Walker Products is an Automotive ISO9001/TS 16949 certified company with a long history in engine management and fuel system components dating back to 1946. The 350-34490 oxygen sensor is manufactured for the specified application and position to support the diagnostic feedback expected by the ECU.