Bosch 15275 Oxygen Sensor - Downstream

Reliable Oxygen Sensor for Toyota and Scion Vehicles

The Bosch Validated Oxygen Sensor 15275 is designed specifically for select Toyota and Scion models, including the Echo, xA, and xB. This narrow-band heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases precisely.

• Specific fit for Toyota Echo, Scion xA, and xB models
• Heated narrow-band oxygen sensor for improved response time
• Threaded mounting type with 18 mm thread diameter and 22 mm hex size
• Includes a 13.9-inch wiring harness with a 4-wire blade terminal connector
• Durable metal housing finished in steel for long-lasting use
• Connector features a rectangular shape with male terminals
• Standard replacement grade for reliable emissions control

About the Bosch Validated Oxygen Sensor Line

The Bosch Validated Oxygen Sensor product line focuses on delivering precise and reliable sensor solutions that meet OEM specifications. This line is engineered to provide accurate air-fuel mixture readings, helping maintain emissions compliance and engine efficiency. The 15275 oxygen sensor is part of this line, offering a direct fit and heated functionality to support quick sensor activation and consistent performance.

Detailed Product Description

This Bosch oxygen sensor 15275 is a narrow-band heated sensor designed for specific fitment on Toyota Echo and Scion xA and xB models. It features a threaded mounting type with an 18 mm thread diameter and a 22 mm hex size for secure installation. The sensor includes a 13.9-inch wiring harness with four wires and blade-type terminals housed in a rectangular male connector, ensuring proper electrical connection. The metal housing finished in steel provides durability against harsh engine conditions. The sensor’s heated design allows it to reach operating temperature quickly, improving emissions control and fuel efficiency.

Common Applications and Issues Addressed

• Helps maintain proper air-fuel ratio for efficient combustion
• Reduces emissions by providing accurate exhaust gas readings
• Prevents engine performance issues related to faulty oxygen sensors
• Resolves check engine light triggers caused by sensor failure
• Supports smooth engine idling and acceleration

Installation Notes and Tips

Installation requires a threaded mounting hole with an 18 mm diameter. Use a 22 mm hex socket for sensor removal and installation. Ensure the wiring harness is connected securely to the vehicle’s electrical system using the included 4-wire blade terminal connector. No mounting bracket is included, so verify the sensor mounts directly to the exhaust system. Follow vehicle-specific service manual instructions for proper torque specifications and sensor location.

Quality Assurance and Warranty

The Bosch Validated Oxygen Sensor 15275 is manufactured to meet OEM standards for fit, form, and function. It is a standard replacement grade sensor designed for reliable emissions control and engine performance. Bosch products typically come with a limited warranty; please refer to Bosch or your parts provider for specific warranty details related to this oxygen sensor.