Bosch 15487 Oxygen Sensor - Downstream Left, Downstream Rear or Downstream Right

Bosch Oxygen Sensor for Toyota and Lexus

Bosch Part Number 15487 is a specific-fit, narrow-band heated oxygen sensor for downstream right, downstream rear, and downstream left applications on select Toyota and Lexus vehicles. It uses a threaded metal housing, a 4-wire blade connector, and an included wiring harness to deliver stable air-fuel-ratio feedback to the ECU.

Built under the Bosch Engineered Oxygen Sensor line, this sensor reflects Bosch’s long OE development history in oxygen sensing. The design focuses on fast sensor response, accurate lambda measurement, and dependable closed-loop operation across changing exhaust temperatures.

Key Features

• Specific-fit Bosch oxygen sensor for select Toyota and Lexus applications
• Narrow-band heated sensor design for stable ECU feedback
• 4-wire configuration with rectangular male connector and blade terminals
• Threaded mounting with 18 mm thread size and 22 mm hex size
• Metal housing for high-temperature and vibration resistance
• Wiring harness included for direct replacement use
• Bosch Part Number 15487 for catalog and cross-reference lookup

Detailed Description

Bosch 15487 is engineered as a standard replacement oxygen sensor for downstream positions on vehicles such as the Toyota Camry, Toyota Avalon, Lexus ES350, Lexus ES330, Lexus ES300, and Lexus GX460. It measures exhaust oxygen content so the engine control unit can adjust fuel delivery and maintain proper combustion control. The heated narrow-band design helps the sensor reach operating temperature quickly and maintain consistent signal output during normal driving.

This Bosch Engineered Oxygen Sensor line uses ceramic sensing elements, controlled heating, and durable materials suited for exhaust heat and vibration. If you are replacing a downstream right sensor on a 2015-2017 Toyota Camry, a downstream rear sensor on a 2004-2008 Toyota Solara, or a downstream left sensor on a 2002-2003 Lexus ES300, Bosch 15487 is built for those exact applications. This part cross-references Toyota/Lexus OE numbers 8946506070 and 8946506130 for the same application.

Used For These Issues

• Restoring oxygen sensor signal accuracy after sensor aging or contamination
• Addressing check engine light concerns tied to downstream O2 sensor performance
• Improving closed-loop fuel control after a failed narrow-band sensor
• Replacing a damaged connector, wiring lead, or threaded sensor body
• Correcting drivability issues caused by inaccurate exhaust oxygen feedback

Installation Notes and Fitment

• Fits 2021 Lexus GX460, downstream right
• Fits 2014-2020 Lexus GX460, downstream right
• Fits 2015-2018 Lexus ES350, downstream right
• Fits 2016-2018 Toyota Avalon, downstream right
• Fits 2015-2017 Toyota Camry, downstream right
• Fits 2015 Toyota Avalon, downstream right
• Fits 2014 Lexus ES350, downstream right
• Fits 2006-2014 Toyota Avalon, downstream right
• Fits 2002-2014 Toyota Camry, downstream right
• Fits 2007-2013 Lexus ES350, downstream right
• Fits 2013 Lexus GX460, downstream right
• Fits 2004-2008 Toyota Solara, downstream rear
• Fits 2004-2006 Lexus ES330, downstream rear
• Fits 2004-2006 Lexus ES330, downstream left
• Fits 2004-2006 Toyota Camry, downstream right
• Fits 2005 Toyota Avalon, downstream left
• Fits 2002-2003 Lexus ES300, downstream left

Verify the connector shape, wire count, thread size, and sensor position before installation. Use the vehicle’s exact year, make, model, and exhaust location to confirm the correct Bosch 15487 application before removal of the original sensor.

Quality Assurance

Bosch backs this oxygen sensor with OE development experience and aftermarket manufacturing standards aligned with original-equipment expectations. The Bosch Engineered Oxygen Sensor line is built for consistent signal output, durable heater performance, and long-term service in demanding exhaust environments.