Walker 350-34127 Oxygen Sensor - Upstream Left or Upstream Right

Walker 350-34127 Oxygen Sensor for Cadillac XLR

Walker Products 350-34127 is a heated oxygen sensor built as a specific-fit replacement for select Cadillac XLR applications. It is engineered for upstream left and upstream right positions on 2006-2009 Cadillac XLR models, helping the ECU receive the exhaust feedback it expects for proper fuel control and emissions monitoring.

Key Features

• Specific-fit heated oxygen sensor for targeted vehicle applications
• Fits upstream left and upstream right positions on Cadillac XLR
• 4-wire design with female connector and radiused polygon connector shape
• Threaded mounting type with 18.0 mm thread diameter
• Wiring harness length: 35.94; overall length: 39.49
• Wire gauge: 20

Product Details

Walker Products Aftermarket focuses on OE-style engine management and oxygen/air-fuel sensors for precise application matching. Part number 350-34127 is built for the specified fitment position so the sensor can deliver the diagnostic feedback required by the ECU. For 2006-2009 Cadillac XLR vehicles, this sensor is listed for both upstream left and upstream right locations, making it a direct replacement option when servicing the exhaust monitoring system.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Check engine light or MIL illumination related to oxygen sensor faults
• Poor engine performance caused by incorrect exhaust feedback
• Increased fuel consumption from inaccurate air-fuel readings
• Higher exhaust emissions from a failing heated oxygen sensor
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes

Verify the sensor location before installation: this application is listed for upstream left and upstream right positions on the Cadillac XLR. Inspect the sensor, wiring harness, and connector for physical damage before replacement, since damaged wiring can shorten service life and affect signal quality. Confirm thread size, connector style, and harness length against the original part before installation.

Quality Assurance

Walker Products manufactures engine management sensors as OE-replacement components and operates as an ISO 9001/TS 16949 certified company. The Walker Products Aftermarket line is supported by application-specific cataloging and fitment-focused part development for modern vehicle electronics.