Walker 350-35176 Oxygen Sensor - Upstream Left

OE Replacement Oxygen Sensor for Porsche Cayenne

Walker OE Replacement oxygen sensor 350-35176 is a specific-fit, heated wide-band sensor for the upstream left position on select Porsche Cayenne models. It is built to provide the ECU with the diagnostic feedback needed for accurate air-fuel control on the listed applications.

Key Features

• Heated wide-band oxygen sensor for precise exhaust feedback
• Specific-fit design for the correct application and position
• 5-wire configuration
• M18 x 1.5 thread size with 22 mm wrench size
• OE Replacement line from Walker Products

Product Details

The Walker OE Replacement line focuses on direct-fit engine management components built for application-specific installation and system communication. Part number 350-35176 is engineered for the upstream left location on the Porsche Cayenne, helping maintain the sensor input the ECU expects for fuel control and emissions monitoring. This sensor is listed for 2019 Porsche Cayenne, upstream left and 2020 Porsche Cayenne, upstream left. If you are searching for a Porsche Cayenne upstream left oxygen sensor or a Walker 350-35176 oxygen sensor, this part matches the confirmed fitment shown here.

Walker Products has supplied engine management and oxygen/air-fuel sensors for OE-style replacement applications since 1946, with manufacturing processes aligned to ISO 9001/TS 16949 standards.

What It Helps Address

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

Installation Notes and Tips

Confirm the vehicle is a 2019 or 2020 Porsche Cayenne with the upstream left sensor location before ordering. Inspect the sensor wiring harness and connector for heat damage, corrosion, or broken terminals before installation. The sensor uses an M18 x 1.5 thread and 22 mm wrench size, so verify access and tool clearance at the exhaust location. After installation, clear any stored fault codes and verify that the ECU reads the new sensor correctly.

Quality Assurance

Walker Products manufactures OE replacement engine management sensors for specific applications and positions, with production supported by ISO 9001/TS 16949 quality systems. Part number 350-35176 is built for the listed Porsche Cayenne fitment and the diagnostic feedback required by the vehicle ECU.