Bosch 15159 Oxygen Sensor - Downstream

Overview of Bosch Validated Oxygen Sensor 15159

The Bosch Validated Oxygen Sensor 15159 is designed specifically for the Hummer H3, providing precise emission control through its narrow-band heated sensor technology. This oxygen sensor ensures accurate air-fuel mixture readings to help maintain optimal engine performance and emissions compliance.

• Specific fit for Hummer H3 models
• Narrow-band heated oxygen sensor for reliable readings
• Threaded mounting type with 18 mm thread diameter and 22 mm hex size
• 4-wire configuration with a 6.8-inch wiring harness length
• Durable metal housing with steel finish
• Female square connector with 4 terminals
• Overall length of 10.2 inches for proper fitment
• Standard replacement grade type
• Wiring harness included for direct installation

About the Bosch Validated Oxygen Sensor Line

The Bosch Validated Oxygen Sensor product line focuses on delivering sensors that meet strict validation standards for fit, form, and function. This ensures that each sensor, including part number 15159, is engineered to provide consistent performance and durability tailored to specific vehicle applications like the Hummer H3. These sensors are designed to integrate seamlessly with the vehicle’s emission control system, supporting regulatory compliance and engine efficiency.

Detailed Product Description

The Bosch 15159 oxygen sensor features a narrow-band heated sensor type, which allows for faster warm-up times and more accurate oxygen level detection in the exhaust stream. Its 4-wire design includes a heated element to maintain sensor temperature, improving responsiveness under various operating conditions. The sensor’s metal housing and steel finish provide resistance to harsh engine environments. The threaded mounting type with an 18 mm diameter and 22 mm hex size ensures secure installation. The included wiring harness with a female square connector and 4 terminals simplifies connection to the vehicle’s wiring system. With an overall length of 10.2 inches and a wiring harness length of 6.8 inches, this sensor is designed for precise fitment in the Hummer H3.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for improved fuel efficiency
• Helps reduce harmful emissions by ensuring proper catalytic converter function
• Resolves engine performance issues related to faulty oxygen sensors
• Prevents check engine light triggers caused by sensor failure
• Supports smooth engine idling and acceleration response

Installation Notes and Tips

When installing the Bosch Validated Oxygen Sensor 15159 on a Hummer H3, ensure the engine is cool to avoid burns. Use a 22 mm oxygen sensor socket for removal and installation. Verify the sensor’s wiring harness is properly connected to the female square connector with 4 terminals. Avoid over-tightening the threaded sensor to prevent damage to the mounting threads. No additional mounting brackets or accessories are required for installation.

Quality Assurance and Warranty

Bosch oxygen sensors, including part number 15159, are manufactured to meet OEM standards for quality and reliability. The Bosch Validated Oxygen Sensor line undergoes rigorous testing to ensure consistent performance and durability. While specific warranty details may vary, Bosch typically offers a limited warranty covering defects in materials and workmanship to provide confidence in the product’s longevity and function.