Bosch 15270 Oxygen Sensor - Downstream

Reliable Oxygen Sensor for Toyota Highlander

The Bosch Validated Oxygen Sensor 15270 is designed specifically for Toyota Highlander models, providing accurate air-fuel mixture readings to optimize engine performance and reduce emissions. This narrow-band heated oxygen sensor ensures precise monitoring for efficient combustion control.

• Specific fit for Toyota Highlander vehicles
• Narrow-band heated oxygen sensor type for accurate readings
• Threaded mounting type with 18 mm thread diameter and 22 mm hex size
• Includes a 27-inch wiring harness with 4 wires and blade terminals
• Durable metal housing finished in steel for long-lasting use
• Connector features a rectangular shape with male gender terminals
• Overall length of 30.7 inches with 29.5 inches from sealing surface to connector end

About the Bosch Validated Oxygen Sensor Line

The Bosch Validated Oxygen Sensor product line focuses on delivering reliable emission control components that meet or exceed OEM specifications. This line is engineered to provide consistent sensor performance and durability, ensuring compatibility and proper function in specific vehicle applications such as the Toyota Highlander. The 15270 part number is part of this line, offering a standard replacement grade sensor with heated functionality for improved responsiveness.

Product Details and Specifications

This Bosch oxygen sensor features a narrow-band heated sensor type, which allows for precise measurement of oxygen levels in the exhaust gases. The sensor is threaded with an 18 mm diameter and includes a 22 mm hex size for installation using standard tools. The wiring harness is 27 inches long and includes four wires with blade terminals, connected via a rectangular male connector. The sensor housing is made of metal with a steel finish, providing durability under high-temperature conditions. The overall length of the sensor assembly is 30.7 inches, with 29.5 inches measured from the sealing surface to the end of the connector, ensuring proper fitment and connection in the Toyota Highlander exhaust system.

Common Applications and Problem Solving

• Restores accurate air-fuel ratio readings for improved engine efficiency
• Helps resolve check engine light issues related to oxygen sensor faults
• Reduces emissions by ensuring proper catalytic converter function
• Improves fuel economy by providing precise sensor data to the engine control unit
• Addresses rough idling or poor acceleration caused by faulty oxygen sensors

Installation Notes and Tips

When installing the Bosch Validated Oxygen Sensor 15270 on a Toyota Highlander, ensure the sensor is threaded securely using a 22 mm socket or wrench. Avoid over-tightening to prevent damage to the sensor or exhaust manifold. The 27-inch wiring harness allows for flexible routing to the vehicle’s connector, which features a rectangular male design with four blade terminals. Confirm the connector matches the vehicle’s harness before installation. Since this is a specific fit sensor, verify compatibility with your Highlander model year prior to purchase.

Quality Assurance and Warranty

Bosch oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. The Bosch Validated Oxygen Sensor 15270 is a standard replacement grade part designed to meet OEM specifications. While specific warranty details are not provided here, Bosch typically offers limited warranties on their emission control components. Refer to Bosch or your parts provider for exact warranty terms.