Bosch 16561 Oxygen Sensor - Upstream or Upstream Right

Bosch Validated Oxygen Sensor for Nissan and INFINITI

Bosch Part Number 16561 is a specific-fit oxygen sensor for select Nissan and INFINITI applications, including upstream locations on models such as the Nissan Altima, Maxima, Rogue, Murano, Frontier, and INFINITI Q50. Built as a heated sensor with a threaded mount and 4-wire harness, it supports accurate air-fuel ratio feedback for stable engine control and emissions monitoring.

Key Features

• Bosch Validated Oxygen Sensor line for OE-style replacement performance
• Part Number 16561 for direct application lookup
• Heated design for faster sensor operation during cold starts
• Specific fit with included wiring harness
• 4-wire configuration with blade terminals and rectangular connector
• Threaded mounting with 18 mm thread size and 22 mm hex
• Metal housing built for high-temperature and vibration exposure
• Narrow-band sensor type with wide-band oxygen sensor listing in product data

Product Details

Bosch developed its oxygen sensor technology through decades of OE engineering, starting with early sensor designs and later advancing to planar narrowband construction for quicker light-off and faster closed-loop response. This Bosch Validated Oxygen Sensor uses ceramic sensing elements, controlled heating, and durable materials to deliver consistent signal output across changing exhaust temperatures. For drivers servicing Nissan and INFINITI upstream sensor locations, Bosch 16561 provides a direct replacement option that supports accurate combustion control and emissions system operation.

This part cross-references Nissan OE numbers 226931PM0A and 226939HP0A for the same application.

Vehicle Fitment

• Fits 2020-2022 Nissan Rogue Sport, Upstream
• Fits 2020-2021 Nissan Maxima, Upstream
• Fits 2020-2021 Nissan NV2500, Upstream
• Fits 2020-2021 Nissan NV3500, Upstream
• Fits 2020 INFINITI QX60, Upstream
• Fits 2020 Nissan 370Z, Upstream
• Fits 2015-2019 INFINITI Q70, Upstream
• Fits 2015-2019 INFINITI Q70L, Upstream
• Fits 2015-2019 INFINITI QX60, Upstream
• Fits 2015-2019 INFINITI QX80, Upstream
• Fits 2015-2019 Nissan 370Z, Upstream
• Fits 2017-2019 Nissan Armada, Upstream
• Fits 2015-2019 Nissan Frontier, Upstream
• Fits 2016-2019 Nissan Maxima, Upstream
• Fits 2018-2019 Nissan NV2500, Upstream
• Fits 2018-2019 Nissan NV3500, Upstream
• Fits 2015-2019 Nissan Pathfinder, Upstream
• Fits 2017-2019 Nissan Rogue, Upstream
• Fits 2018-2019 Nissan Rogue Sport, Upstream
• Fits 2017-2019 Nissan TITAN, Upstream
• Fits 2016-2019 Nissan TITAN XD, Upstream
• Fits 2014-2018 INFINITI Q50, Upstream
• Fits 2015-2018 Nissan Altima, Upstream
• Fits 2015-2018 Nissan Murano, Upstream
• Fits 2015-2017 INFINITI QX50, Upstream
• Fits 2015-2017 INFINITI QX70, Upstream
• Fits 2015-2017 Nissan Quest, Upstream Right
• Fits 2015 INFINITI Q40, Upstream
• Fits 2015 INFINITI Q60, Upstream
• Fits 2015 Nissan Xterra, Upstream
• Fits 2014 INFINITI Q60, Upstream
• Fits 2014 INFINITI Q70, Upstream
• Fits 2014 INFINITI QX80, Upstream
• Fits 2014 Nissan 370Z, Upstream
• Fits 2014 Nissan Frontier, Upstream
• Fits 2014 Nissan Quest, Upstream Right
• Fits 2014 Nissan Xterra, Upstream

Common Repair Uses

• Replacing a failed upstream oxygen sensor that triggers check engine light concerns
• Restoring air-fuel ratio feedback for rough idle or drivability complaints
• Addressing emissions test failures related to sensor response or signal accuracy
• Correcting fuel control issues caused by aging heated O2 sensor elements
• Servicing OE-style sensor locations on Nissan and INFINITI exhaust systems

Installation Notes

Verify connector shape, wire count, thread size, and sensor position before installation. This Bosch 16561 oxygen sensor uses a threaded mount, 18 mm thread diameter, 4 wires, and a rectangular male connector with a 12.7 in wiring harness length. Confirm the vehicle application by year, make, model, and upstream position before replacing the original sensor.

Quality Assurance

Bosch backs this oxygen sensor with more than five decades of OE development in emissions and engine management sensing. The Bosch Validated Oxygen Sensor line is built to OE-proven standards for accuracy, durability, and stable operation under heat and vibration.