Bosch 15986 Oxygen Sensor - Downstream

Reliable Oxygen Sensor for Toyota Highlander

The Bosch Validated Oxygen Sensor 15986 is designed specifically for Toyota Highlander models, ensuring precise emission control and optimal engine performance. This narrow-band heated oxygen sensor features a threaded mounting type and a durable metal housing for long-lasting operation.

Key Features of Bosch Oxygen Sensor 15986

• Compatible with Toyota Highlander vehicles
• Specific fit with 4-wire configuration and pin terminal type
• Heated narrow-band oxygen sensor for accurate air-fuel mixture readings
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Includes wiring harness with 28.9-inch length and rectangular female connector
• Standard replacement grade with steel finish and metal housing
• Overall length of 32.3 inches for proper installation

About the Bosch Validated Oxygen Sensor Line

The Bosch Validated Oxygen Sensor product line focuses on delivering reliable emission control components that meet OEM specifications. This line ensures that each sensor, including part number 15986, undergoes rigorous validation to provide consistent performance and durability tailored to specific vehicle applications like the Toyota Highlander.

Detailed Product Description

The Bosch 15986 oxygen sensor is a narrow-band heated sensor designed to monitor exhaust gases and provide feedback to the engine control unit for efficient combustion. Featuring a 4-wire design with female pin terminals and a rectangular connector shape, this sensor offers a secure electrical connection. The threaded mounting type with an 18 mm diameter and 22 mm hex size allows for straightforward installation. Its metal housing and steel finish contribute to corrosion resistance and durability under high-temperature conditions. The included wiring harness measures 28.9 inches, with an overall length of 32.3 inches from sealing surface to connector end, ensuring compatibility with the Toyota Highlander's exhaust system layout.

Common Issues Addressed by This Oxygen Sensor

• Incorrect air-fuel mixture readings causing poor fuel economy
• Check engine light triggered by faulty oxygen sensor signals
• Increased emissions due to sensor failure
• Engine performance issues such as rough idling or hesitation
• Failed emissions tests related to sensor malfunction

Installation Notes and Tips

• Ensure vehicle compatibility with Toyota Highlander models before installation
• Use a 22 mm oxygen sensor socket for removal and installation
• Do not overtighten; follow torque specifications for the 18 mm threaded sensor
• Inspect wiring harness and connector for damage before connecting
• Allow the engine to cool before replacing the sensor to avoid burns

Quality Assurance and Warranty

The Bosch Validated Oxygen Sensor 15986 is manufactured to meet strict quality standards, ensuring reliable operation and longevity. Bosch provides a standard replacement grade sensor with a metal housing and heated element for consistent performance. Warranty details should be confirmed with the parts provider or Bosch directly, as coverage may vary.