Bosch 15555 Oxygen Sensor - Downstream

Overview of Bosch Validated Oxygen Sensor 15555

The Bosch Validated Oxygen Sensor 15555 is designed specifically for Mazda 6 models, providing precise emission control and engine performance monitoring. This narrow-band heated oxygen sensor ensures accurate air-fuel mixture readings to help maintain optimal combustion efficiency.

• Specific fit for Mazda 6 vehicles
• Narrow-band heated oxygen sensor type
• Threaded mounting with 18 mm thread diameter
• Includes 20.7-inch wiring harness with 4-pin rectangular female connector
• Standard replacement grade with metal housing and steel finish
• Overall length of 24.4 inches for proper installation

Detailed Product Features and Specifications

The Bosch Validated Oxygen Sensor 15555 features a narrow-band sensor type with heating capability to provide faster sensor response and improved emission control. It comes with a 20.7-inch wiring harness and a 4-wire configuration, utilizing a 4-pin rectangular female connector for secure electrical connections. The sensor is threaded with an 18 mm diameter and 22 mm hex size, allowing for straightforward installation using standard tools. Constructed with a durable metal housing and steel finish, this sensor is built to withstand harsh engine environments. The overall length of 24.4 inches and a wiring harness length of 20.7 inches ensure compatibility and ease of fitment in the Mazda 6.

About the Bosch Validated Oxygen Sensor Line

The Bosch Validated Oxygen Sensor product line is engineered to meet strict OEM standards for emission control sensors. This line focuses on providing reliable, vehicle-specific oxygen sensors that deliver consistent performance and durability. The 15555 part number is part of this line, ensuring it meets Bosch’s validation criteria for fit, function, and quality on compatible vehicles like the Mazda 6.

Common Applications and Problem Solving

• Helps correct engine misfires caused by inaccurate air-fuel mixture readings
• Reduces excessive emissions by providing precise oxygen level data
• Improves fuel economy through optimized combustion control
• Resolves check engine light triggers related to oxygen sensor faults
• Supports smooth engine idling and acceleration performance

Installation Notes and Tips

Installation of the Bosch 15555 oxygen sensor requires a threaded mounting type with an 18 mm thread diameter. Use a 22 mm hex socket for removal and installation. The sensor includes a 4-pin female connector with a rectangular shape, so ensure the wiring harness is properly connected to avoid electrical issues. The wiring harness length of 20.7 inches provides sufficient reach for typical Mazda 6 engine compartments. No mounting bracket is included, so use the existing sensor mounting location. It is recommended to handle the sensor carefully to avoid damage to the heated element and wiring.

Quality Assurance and Warranty

The Bosch Validated Oxygen Sensor 15555 is manufactured to meet OEM specifications and undergoes rigorous testing to ensure durability and performance. Bosch provides a standard replacement grade sensor with reliable heating elements and corrosion-resistant metal housing. While specific warranty details are not provided here, Bosch typically offers limited warranties on their oxygen sensors to cover manufacturing defects and performance issues.