Bosch 16614 Oxygen Sensor - Downstream

Bosch Validated Oxygen Sensor for Hyundai

Bosch Validated Oxygen Sensor 16614 is a specific-fit, narrow-band heated O2 sensor built for downstream use on select Hyundai applications. It provides air-fuel-ratio feedback to the ECU so the engine can maintain stable closed-loop control and emissions performance.

Fits 2013-2016 Hyundai Santa Fe Sport, downstream. This Bosch Validated Oxygen Sensor line reflects Bosch OE development experience and uses a design focused on accurate signal response, thermal durability, and consistent operation under demanding exhaust conditions.

Key Features

• Part number 16614 for direct identification
• Specific-fit downstream oxygen sensor for select Hyundai Santa Fe Sport applications
• Narrow-band heated sensor design for faster closed-loop operation
• 4-wire configuration with square female connector
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Metal housing and high-temperature-resistant construction
• Wiring harness included for the listed application
• Interchange reference: 392102G850

Product Details

Bosch 16614 is a standard replacement oxygen sensor engineered to measure exhaust oxygen content and send precise feedback to the engine control unit. The heated narrow-band design helps the sensor reach operating temperature quickly, which supports faster transition into closed-loop fuel control after startup. Bosch’s oxygen sensor development history includes early thimble-style sensors and later planar narrowband designs, and this part follows that OE-focused approach with ceramic sensing elements and heater control tuned for consistent signal output.

For shoppers searching for a 2013-2016 Hyundai Santa Fe Sport downstream oxygen sensor, Bosch 16614 offers a direct-fit solution with the correct connector style, terminal count, and threaded mounting format. It is also a practical choice when replacing a worn Bosch Validated Oxygen Sensor on the Hyundai Santa Fe Sport, especially when drivability or emissions-related faults point to a failing downstream sensor.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Slow or inaccurate downstream O2 sensor signal
• Unstable closed-loop fuel control
• Emissions test failures tied to sensor response
• Exhaust sensor issues caused by heat and vibration exposure

Installation Notes

Verify the connector shape, wire count, thread size, and downstream position before installation. The sensor uses an 18 mm thread diameter and 22 mm hex size, so the correct oxygen sensor socket or wrench is recommended. Inspect the harness routing and connector condition during replacement, and confirm the exhaust bung threads are clean before threading in Bosch 16614.

Quality Assurance

Bosch backs this oxygen sensor with more than five decades of OE development experience. The Validated Oxygen Sensor line is built to deliver OE-proven fit and signal performance for the listed Hyundai Santa Fe Sport applications.