Bosch 15087 Oxygen Sensor - Downstream, Downstream Left or Upstream

Bosch Oxygen Sensor 15087 Overview

Bosch Engineered Oxygen Sensor 15087 is a direct-fit, heated narrow-band oxygen sensor built for precise air-fuel-ratio feedback to the ECU. It supports stable combustion control and emissions management for select Toyota Camry and Lexus applications, including downstream and upstream positions.

Key Features

• Direct-fit oxygen sensor for specific applications
• Heated narrow-band design for faster closed-loop operation
• 4-wire configuration with blade terminals and rectangular connector
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Wiring harness included for a cleaner replacement setup
• Metal housing and high-temperature-resistant construction for demanding exhaust conditions
• Bosch Engineered Oxygen Sensor line draws on Bosch OE development experience

Detailed Description

Bosch part number 15087 uses a switching-type narrow-band design to measure oxygen content in the exhaust stream and send accurate feedback to the engine control unit. That signal helps the system maintain the correct air-fuel ratio during warm-up, cruise, and load changes. The Bosch Engineered Oxygen Sensor line reflects Bosch’s long OE history, including ceramic sensing elements, controlled heater performance, and materials selected for heat and vibration resistance.

This Bosch oxygen sensor 15087 is listed for 2003-2006 Toyota Camry, downstream; 1998-2000 Lexus SC300, upstream; and 1996-1997 Lexus SC400, downstream left. It is a direct-fit replacement for vehicles that require the specified connector, thread size, and harness layout. This part cross-references 8946524160 and 8946524200 for the same application.

What This Sensor Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio feedback to the ECU
• Rough idle or unstable closed-loop fuel control
• Increased exhaust emissions from a worn sensor
• Slow sensor response during warm-up or driving transitions

Installation Notes and Tips

Verify the sensor position before ordering, since this application includes upstream, downstream, and downstream left locations. Confirm the 18 mm thread size, 4-wire layout, and rectangular male connector match the original unit on your Toyota Camry or Lexus SC300/SC400. Use proper oxygen sensor service tools and inspect the exhaust bung threads before installation.

Quality Assurance

Bosch backs this oxygen sensor with OE-driven engineering and aftermarket availability based on decades of original equipment development. The Bosch Engineered Oxygen Sensor 15087 is built to the same type of performance standards that support accurate exhaust feedback and dependable operation in demanding thermal conditions.