Walker 350-34370 Oxygen Sensor - Center or Downstream

Walker 350-34370 Oxygen Sensor for Ford Focus

Walker Products 350-34370 is a heated oxygen sensor built as a direct-fit replacement for specific Ford Focus applications. It is engineered for the correct mounting position and ECU feedback, helping restore accurate exhaust monitoring on 2003-2007 Ford Focus center Bank 1 Sensor 2 applications and 2008-2011 Ford Focus downstream Bank 1 Sensor 2 applications.

Key Features

• Heated oxygen sensor for precise exhaust gas feedback
• Specific-fit design for the listed Ford Focus applications
• Threaded mounting type with 18.0 mm thread diameter
• 4-wire design with 20-gauge wiring
• 10.16 wiring harness length and 13.7 overall length
• Radiused polygon connector with male terminal

Product Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors engineered as OE-style replacements for a wide range of vehicles. Part number 350-34370 is built for the correct sensor location and signal response required by the vehicle’s ECU, making it a practical choice when replacing a worn or failed oxygen sensor on a Ford Focus. If you are searching for a Ford Focus downstream oxygen sensor or a Bank 1 Sensor 2 replacement for 2003-2011 models, this part number is designed around those exact applications.

Walker Products has supplied engine management and fuel system components since 1946 and manufactures to automotive ISO 9001 / TS 16949 standards. The 350-34370 oxygen sensor is intended for specific fitment, so matching the position and connector style is important before installation. This part number 350-34370 is also a useful reference when cross-checking Ford Focus oxygen sensor replacement needs by year and position.

What It Helps Address

• Check engine light or MIL related to oxygen sensor performance
• Poor fuel economy caused by inaccurate exhaust feedback
• Rough engine operation from a degraded sensor signal
• Higher exhaust emissions from incorrect air-fuel monitoring
• Fault codes stored in the ECU for the affected sensor circuit

Installation Notes

Verify the sensor position, connector shape, and thread size before installation. Inspect the wiring harness and connector for heat damage, corrosion, or physical wear, since damaged wiring can shorten sensor life and affect readings. Confirm the vehicle application carefully for 2003-2007 Ford Focus center Bank 1 Sensor 2 and 2008-2011 Ford Focus downstream Bank 1 Sensor 2 locations before replacing the original unit.

Quality Assurance

Walker Products Aftermarket manufactures this oxygen sensor as an OE-replacement style part for specific applications and backs its engine management components with long-standing manufacturing experience. The brand’s ISO 9001 / TS 16949 certified production supports consistent fitment and sensor performance for the listed Ford Focus applications.