Walker 350-34075 Oxygen Sensor

Walker 350-34075 Oxygen Sensor for Porsche Boxster

Walker Products 350-34075 is a heated oxygen sensor built as a specific-fit OE-style replacement for select 2004 Porsche Boxster applications. It is engineered to deliver the ECU feedback needed for accurate fuel control and emissions monitoring on upstream and downstream positions.

For drivers searching for a 2004 Porsche Boxster upstream oxygen sensor or a 2004 Porsche Boxster downstream oxygen sensor, this Walker Products Aftermarket part number 350-34075 is matched to the listed vehicle positions and connector style.

Key Features

• Specific-fit oxygen sensor for select 2004 Porsche Boxster applications
• Heated sensor design for faster operating temperature
• 4-wire configuration with 22-gauge wiring
• Female connector with radiused polygon shape
• Threaded mounting type with 18.0 mm thread diameter
• Overall length: 11.34 in.; wiring harness length: 7.8 in.

Product Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors engineered as OE replacement parts for a wide range of vehicles. Part number 350-34075 is built for specific application fitment and the correct sensor position, helping the ECU receive the diagnostic feedback it expects. This matters on the Porsche Boxster, where upstream and downstream oxygen sensor signals are used to monitor air-fuel control and emissions performance.

Walker Products has supplied engine management components since 1946 and manufactures to automotive ISO 9001/TS 16949 standards. The Walker 350-34075 oxygen sensor is a direct-fit solution for select 2004 Porsche Boxster models, including upstream right, upstream left, downstream right, and downstream left positions.

What It Helps Address

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

Installation Notes

Verify the sensor position before installation: Fits 2004 Porsche Boxster, upstream right; Fits 2004 Porsche Boxster, upstream left; Fits 2004 Porsche Boxster, downstream right; Fits 2004 Porsche Boxster, downstream left. Inspect the sensor wiring harness and connector for damage before replacement, since physical wear can shorten sensor life and affect signal quality.

Use the threaded mounting point and connector style specified for the application. Confirm the existing sensor’s connector, wire count, and mounting location match Walker Products 350-34075 before installation.

Quality Assurance

Walker Products manufactures engine management sensors as OE replacement components and operates under automotive ISO 9001/TS 16949 quality standards. Part number 350-34075 reflects the brand’s application-specific approach to oxygen sensor fitment for the Porsche Boxster.