Walker 350-34268 Oxygen Sensor

Walker 350-34268 Oxygen Sensor for Porsche Boxster

Walker Products 350-34268 is a heated oxygen sensor built as a specific-fit OE-style replacement for select Porsche Boxster applications. It is engineered to deliver the diagnostic feedback the ECU expects, helping maintain proper fuel control and emissions performance.

Compatible With Porsche Boxster downstream right, downstream left, upstream right, and upstream left positions for 1997-1999 and 2003 models.

Key Features

• Heated oxygen sensor design for faster operating temperature
• Specific fitment for the listed Porsche Boxster positions
• 4-wire configuration with a female connector
• Threaded mounting type with 18.0 mm thread diameter
• Wiring harness length: 7.8
• Overall length: 11.34
• Radiused polygon connector shape
• Walker Products Aftermarket line for engine management and oxygen sensor replacement

Product Details

Walker Products 350-34268 is designed for direct replacement in select Porsche Boxster oxygen sensor locations, including upstream and downstream positions on the left and right sides. As a heated sensor, it helps the engine management system reach closed-loop operation more quickly, supporting accurate air-fuel feedback to the ECU. This part number is application-specific, so fitment and connector style are matched to the listed vehicle positions rather than universal use.

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors developed as OE-style replacements for worldwide vehicle applications. For Porsche Boxster owners, this sensor is a practical choice when replacing a failed sensor that has triggered fault codes or affected drivability. Part number 350-34268 is also referenced as Walker 350-34268 in catalog searches.

What It Helps Address

• Check engine light or MIL related to oxygen sensor performance
• Poor fuel economy caused by incorrect air-fuel feedback
• Rough running or hesitation from inaccurate sensor readings
• Elevated exhaust emissions from a degraded sensor
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes

Verify the sensor position before installation: upstream left, upstream right, downstream left, or downstream right, depending on the vehicle application. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion before replacement. Confirm the threaded mounting point and connector shape match the original part, and clear any stored diagnostic trouble codes after installation if required by the repair procedure.

Quality Assurance

Walker Products states that its engine management sensors are manufactured for specific applications and fitment positions, with diagnostic feedback intended to meet ECU requirements. The company is ISO 9001/TS 16949 certified and has supplied engine management and fuel system components since 1946.