Bosch 15569 Oxygen Sensor - Downstream or Downstream Left

Reliable Oxygen Sensor for Lexus, Toyota, and Scion Vehicles

The Bosch Engineered Oxygen Sensor 15569 is designed to provide accurate air-fuel mixture readings for specific Lexus, Toyota, and Scion models. This narrow-band heated oxygen sensor ensures optimal engine performance and emission control for vehicles like the Toyota Highlander, Lexus RX330, and Scion iM.

• Specific fit for Lexus, Toyota, and Scion models including Corolla iM, Highlander, RX330, and Sienna
• Heated narrow-band oxygen sensor for precise emission control
• Threaded mounting type with 18 mm thread diameter and 22 mm hex size
• Includes a 4-wire wiring harness with a male square connector, 11.6 inches in length
• Durable metal housing finished in steel for long-lasting use
• Standard replacement grade with a total length of 15 inches

About the Bosch Engineered Oxygen Sensor Line

The Bosch Engineered Oxygen Sensor line focuses on delivering reliable emission control components engineered to meet specific vehicle requirements. The 15569 oxygen sensor is part of this line, offering a precise fit and performance tailored to select Lexus, Toyota, and Scion models. This ensures compatibility and consistent sensor operation within the vehicle’s emission system.

Product Details and Specifications

This oxygen sensor features a narrow-band heated design, which helps maintain accurate oxygen level readings under various engine conditions. The sensor includes a 4-wire configuration with blade-type terminals and a male square connector, facilitating straightforward electrical connections. Its threaded mounting type with an 18 mm diameter and 22 mm hex size allows for secure installation. The wiring harness length is 11.6 inches, with an overall length of 15 inches, including 13.8 inches from the sealing surface to the end of the connector. The sensor housing is constructed from metal with a steel finish, providing durability against heat and corrosion.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for improved engine efficiency
• Helps reduce vehicle emissions to meet regulatory standards
• Resolves check engine light triggers related to oxygen sensor faults
• Improves fuel economy by ensuring proper combustion
• Prevents rough idling and engine performance issues caused by faulty sensors

Installation Notes and Tips

When installing the Bosch Engineered Oxygen Sensor 15569, ensure the vehicle is compatible with this specific fit sensor for Lexus, Toyota, and Scion models. Use the 22 mm hex size for removal and installation. Verify the wiring harness connections match the vehicle’s connector type, noting the 4-wire blade terminal configuration and male square connector. Thread the sensor carefully to avoid cross-threading and ensure a secure fit. No mounting bracket is included, so use the existing mounting point on the vehicle.

Quality Assurance and Warranty

The Bosch Engineered Oxygen Sensor 15569 is manufactured to meet OEM standards for fit and function. It is a standard replacement grade sensor designed for reliable operation within the vehicle’s emission system. While specific warranty details are not provided, Bosch products typically come with manufacturer-backed quality assurance to support long-term use.