Bosch 15387 Oxygen Sensor - Downstream or Downstream Right

Bosch Validated Oxygen Sensor for Nissan and INFINITI

Bosch Validated Oxygen Sensor Part Number 15387 is a specific-fit, narrow-band heated O2 sensor for downstream applications on select Nissan and INFINITI vehicles. It provides air-fuel-ratio feedback to the ECU for stable combustion control and emissions monitoring, with OE-style fitment for common repair jobs on models such as the Nissan Altima, Maxima, Rogue, Sentra, and INFINITI G37.

Key Features

• Specific-fit Bosch Validated Oxygen Sensor, part number 15387
• Narrow-band heated oxygen sensor for downstream use
• 4-wire design with blade terminals and rectangular male connector
• Wiring harness included with 16.5 in harness length
• Threaded mounting with 18 mm thread size and 22 mm hex
• Metal housing with steel finish for standard replacement service
• Overall length: 19.9 in; sealing surface to connector end: 18.7 in

How Bosch Validated Oxygen Sensors Work

Bosch has decades of OE oxygen sensor development behind this Bosch Validated Oxygen Sensor line. The switching-type narrow-band design uses advanced ceramic sensing elements, controlled heater operation, and high-temperature materials to deliver accurate feedback as the engine warms up and during closed-loop operation. That makes Part Number 15387 a practical replacement for downstream sensor service on Nissan and INFINITI platforms where precise exhaust monitoring matters.

This part cross-references Nissan OE part number 226A0JA10C for the same application.

Used For Common Sensor Faults

• Check engine light related to downstream oxygen sensor performance
• Slow or inaccurate air-fuel ratio feedback to the ECU
• Rough combustion control after sensor aging or contamination
• Emissions test failures tied to oxygen sensor response issues
• Replacement of a worn downstream sensor on Nissan Altima, Maxima, Rogue, Sentra, and INFINITI G37 applications

Installation Notes

Verify the connector shape, 4-wire layout, and threaded mounting before installation. This sensor is listed for downstream positions, including downstream right on select Nissan Altima, Maxima, Murano, and Quest applications. Confirm the vehicle’s emission configuration where noted, especially on Nissan Rogue applications with or without California emissions equipment. Use the correct oxygen sensor socket for the 18 mm hex and inspect the exhaust bung threads before tightening.

Quality Assurance

Bosch Validated Oxygen Sensor products are backed by Bosch OE development experience and built to meet standard replacement expectations for long-term sensor accuracy and durability under heat and vibration.