Bosch 16313 Oxygen Sensor - Downstream

Bosch OE Oxygen Sensor for Ford Fiesta

Bosch 16313 is a narrow-band heated oxygen sensor built for precise air-fuel ratio feedback to the ECU. It is a specific-fit replacement for downstream service on 2014-2017 Ford Fiesta models, including Ford Fiesta downstream oxygen sensor applications where stable closed-loop control and emissions monitoring matter.

Key Features

• Specific-fit Bosch Actual OE Oxygen Sensor for downstream placement
• Narrow-band heated design for faster closed-loop response
• 4-wire configuration with included wiring harness
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Square connector with male connector gender and female terminal gender
• Steel-finish metal housing for high-temperature and vibration resistance
• 30.5 in wire length and 30.7 in overall length

Product Details

Bosch 16313 uses a switching-type narrow-band sensing element to report exhaust oxygen content to the engine control unit, helping maintain accurate fuel control across changing operating conditions. Bosch developed this OE sensor line from its original oxygen sensor technology and later planar narrowband designs, focusing on quicker light-off, improved lambda accuracy, and stable operation under thermal load. For drivers searching for a Ford Fiesta downstream oxygen sensor replacement, Bosch 16313 provides the OE-style fit and sensor architecture expected in emissions control service.

This part cross-references Bosch 16313 for the same application.

What It Helps Address

• Check engine light related to downstream oxygen sensor performance
• Unstable air-fuel ratio feedback to the ECU
• Delayed closed-loop operation after startup
• Emissions test failures tied to sensor response issues
• Rough combustion control caused by inaccurate exhaust oxygen readings

Installation Notes

Fits 2014-2017 Ford Fiesta, downstream. Confirm the connector shape, 4-wire layout, threaded mounting, and 18 mm thread size before installation. Use the existing harness routing and verify the sensor location matches the downstream position on the vehicle. For best results, inspect the exhaust threads and connector terminals before replacing the sensor.

Quality Assurance

Bosch backs this oxygen sensor with more than five decades of OE development and aftermarket supply experience. The sensor uses ceramic elements, controlled heater operation, and high-temperature materials selected for consistent performance in demanding exhaust environments.