Bosch 18047 Oxygen Sensor - Downstream or Downstream Right

Reliable Oxygen Sensor for Toyota Sienna

The Bosch Validated Oxygen Sensor 18047 is designed specifically for Toyota Sienna models, providing accurate air-fuel mixture readings to optimize engine performance and reduce emissions. This narrow-band heated oxygen sensor ensures precise monitoring of exhaust gases for efficient combustion control.

• Specific fit for Toyota Sienna vehicles
• Narrow-band heated oxygen sensor type
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Includes 14.4-inch wiring harness with 4-pin rectangular female connector
• Durable metal housing with steel finish
• Overall length of 18.1 inches for proper installation
• Standard replacement grade for reliable performance

About the Bosch Validated Oxygen Sensor Line

The Bosch Validated Oxygen Sensor product line focuses on delivering sensors that meet strict quality and performance standards. Each sensor, including part number 18047, undergoes rigorous validation to ensure compatibility and durability for specific vehicle applications like the Toyota Sienna. This line emphasizes precise sensor calibration and reliable heated operation to maintain optimal engine management and emissions control.

Detailed Product Description

The Bosch 18047 oxygen sensor features a narrow-band heated design, which allows it to reach operating temperature quickly for accurate exhaust gas measurement. The sensor’s metal housing and threaded mounting type provide a secure and durable fit. With a 4-wire configuration and a 4-pin rectangular female connector, this sensor integrates seamlessly with the Toyota Sienna’s engine management system. The included wiring harness measures 14.4 inches, while the overall length from sealing surface to connector end is 16.9 inches, ensuring proper reach and connection. This standard replacement sensor is engineered to maintain emission control system efficiency and support engine performance.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for proper air-fuel ratio control
• Helps resolve engine performance issues such as rough idling or hesitation
• Reduces increased emissions caused by faulty sensors
• Prevents check engine light triggers related to oxygen sensor faults
• Supports fuel economy by ensuring efficient combustion

Installation Notes and Tips

When installing the Bosch 18047 oxygen sensor on a Toyota Sienna, ensure the engine is cool before removal to avoid injury. Use a 22 mm oxygen sensor socket for proper removal and installation. Verify the sensor’s wiring harness and connector match the vehicle’s factory harness to ensure correct fitment. Thread the sensor carefully to avoid cross-threading and torque to manufacturer specifications. No mounting bracket is included, so use the existing mounting point on the exhaust system.

Quality Assurance and Warranty

The Bosch Validated Oxygen Sensor 18047 is manufactured to meet OEM standards for fit, form, and function. Bosch’s quality control processes ensure consistent sensor performance and durability. This part is a standard replacement grade sensor designed to provide reliable operation within the Toyota Sienna’s emission control system. Warranty coverage details should be confirmed with the point of purchase or Bosch directly.