Walker 350-34695 Oxygen Sensor - Downstream

Walker Oxygen Sensor for Ford Fiesta

Walker Products 350-34695 is a heated oxygen sensor built as a specific-fit OE replacement for select Ford applications. It is engineered to provide the ECU with the feedback needed for accurate fuel control and emissions monitoring on downstream bank 1 sensor 2 locations.

Compatible with 2014-2017 Ford Fiesta, downstream, this Walker Products Aftermarket sensor is built for the application-specific mounting position and connector style required by the vehicle. The 350-34695 is a direct-fit oxygen sensor for drivers addressing fault codes, drivability concerns, or emissions-related warning lights on the Fiesta.

Key Features

• Part number: 350-34695
• Heated oxygen sensor for emissions system feedback
• Specific fitment for downstream bank 1 sensor 2 applications
• 4-wire design with 22-gauge wiring
• 27.09 in. wiring harness length
• Threaded mounting with 18.0 mm thread diameter
• Female connector with radiused polygon shape
• Overall length: 30.63 in.

Product Details

Walker Products Engine Management and Oxygen/Air-Fuel sensors are developed as OE-style replacements for a wide range of vehicles. This sensor is built for the correct fitment position and diagnostic response expected by the ECU, helping maintain proper air-fuel control and emissions system operation. For 2014-2017 Ford Fiesta models, the 350-34695 is specified for the downstream location, making it a focused replacement for the affected sensor position.

Walker Products Aftermarket focuses on engine management and sensor applications with cataloged fitment support for modern vehicles. The 350-34695 reflects that approach with application-specific dimensions, connector configuration, and heated sensor design for the Ford Fiesta platform.

What It Helps Address

• Check engine light related to downstream oxygen sensor faults
• Poor fuel economy caused by inaccurate exhaust feedback
• Rough engine operation tied to sensor signal issues
• Elevated exhaust emissions from a failing oxygen sensor
• Stored ECU fault codes for bank 1 sensor 2 circuits

Installation Notes

Verify the vehicle is a 2014-2017 Ford Fiesta with the downstream bank 1 sensor 2 application before ordering. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion, since damaged wiring can shorten sensor life and affect operation. Confirm thread size, connector shape, and harness length match the original part before installation.

Quality Assurance

Walker Products has supplied engine management components since 1946 and operates with ISO 9001/TS 16949 certification. The 350-34695 is manufactured for specific application fitment and ECU feedback requirements, supporting consistent replacement quality for Ford Fiesta oxygen sensor service.