Bosch 16597 Oxygen Sensor - Upstream

Bosch Validated Oxygen Sensor for Nissan and INFINITI

Bosch Validated Oxygen Sensor 16597 is a direct-fit emission control sensor built for precise air-fuel ratio feedback to the ECU. It supports stable combustion control, faster closed-loop response, and consistent performance in demanding heat and vibration conditions.

Compatible with select Nissan Frontier, Versa, Versa Note, Pathfinder, Murano, and INFINITI QX60 upstream applications, this Bosch Validated Oxygen Sensor line is backed by Bosch OE development experience and uses proven ceramic sensing technology with optimized heater control.

Key Features

• Specific-fit oxygen sensor for upstream placement
• Heated design for quicker sensor warm-up and closed-loop operation
• 4-wire configuration with included wiring harness
• Rectangle connector with male connector and female terminals
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Standard replacement grade for emission control service
• Wide band oxygen sensor type with narrow-band sensor designation
• Bosch Validated Oxygen Sensor 16597 for OE-style fit and function

Product Details

Bosch 16597 is engineered as a direct replacement oxygen sensor for upstream locations where accurate exhaust feedback is critical. Bosch developed its oxygen sensor technology over decades of OE supply, beginning with early thimble-style sensors and later advancing to planar narrowband designs that improve light-off speed and closed-loop control. This sensor uses durable materials, a heated element, and a threaded metal housing to maintain reliable signal output under high thermal load. It is a strong match for drivers searching for a 2013-2019 Nissan Frontier upstream oxygen sensor, a 2012-2016 Nissan Versa upstream oxygen sensor, or a 2014-2016 INFINITI QX60 upstream oxygen sensor. Part number 16597 also appears in Bosch Validated Oxygen Sensor listings for select Nissan and INFINITI applications.

Common Issues This Sensor Can Address

• Check engine light related to oxygen sensor performance
• Rough idle or unstable air-fuel control
• Delayed closed-loop operation after startup
• Incorrect exhaust oxygen readings sent to the ECU
• Emissions test failure caused by a worn upstream sensor

Installation Notes and Tips

Verify the upstream sensor location, connector style, thread size, and harness length before installation. This Bosch Validated Oxygen Sensor 16597 uses a threaded 18 mm mount and a 4-wire harness, so matching the original connector and routing is important for proper installation. Inspect the exhaust bung threads and wiring path before tightening the sensor to avoid cross-threading or harness strain. Confirm vehicle-specific fitment for your Nissan Frontier, Nissan Versa, Nissan Versa Note, Nissan Pathfinder, Nissan Murano, or INFINITI QX60 application.

Quality Assurance

Bosch supports this oxygen sensor with OE-focused engineering and validated aftermarket application coverage. The design reflects Bosch’s long history in oxygen sensor development, with attention to signal accuracy, heater control, and durability under harsh operating conditions.