Bosch 17126 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Overview of Bosch Actual OE Oxygen Sensor 17126

The Bosch Actual OE Oxygen Sensor 17126 is designed specifically for select BMW and Rolls-Royce models, including the 550i, 650i, 750i, 750Li, 760Li, Phantom, and X5. This heated wide-band oxygen sensor ensures accurate air-fuel mixture readings to support optimal engine performance and emissions control.

• Heated oxygen sensor for faster response times
• Specific fit for BMW and Rolls-Royce vehicles
• Wide-band sensor type for precise air-fuel ratio measurement
• 23.9-inch wiring harness with oblong male connector
• Threaded mounting type with 18 mm thread diameter
• Standard replacement grade with metal housing and steel finish
• Includes wiring harness with 5 wires and 6 terminals
• Compatible with models such as BMW 550i, 650i, 750i, 750Li, 760Li, Rolls-Royce Phantom, and X5

About the Bosch Actual OE Oxygen Sensor Product Line

The Bosch Actual OE Oxygen Sensor line is engineered to meet original equipment specifications, providing reliable performance and durability. This product line focuses on delivering precise sensor readings and compatibility with specific vehicle applications, ensuring proper emissions control and engine efficiency. The 17126 part number is part of this line, offering a direct fit and standard replacement quality for BMW and Rolls-Royce models.

Detailed Product Description

This Bosch oxygen sensor features a heated design to reduce warm-up time, allowing the sensor to reach operating temperature quickly for accurate emissions monitoring. The wide-band sensor type provides a broad measurement range of oxygen levels in the exhaust, which is critical for modern engine management systems. The sensor includes a 23.9-inch wiring harness with an oblong male connector and blade-type terminals, facilitating straightforward installation. Its metal housing and steel finish ensure durability under high-temperature conditions. The threaded mounting type with an 18 mm thread diameter allows secure attachment to the exhaust system without the need for additional mounting brackets.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for BMW 550i, 650i, 750i, 750Li, 760Li, Rolls-Royce Phantom, and X5
• Resolves engine performance issues related to faulty oxygen sensors
• Helps reduce emissions and prevent check engine light triggers
• Improves fuel efficiency by providing precise sensor data
• Eliminates rough idling and hesitation caused by sensor failure

Installation Notes and Tips

Installation requires removing the old oxygen sensor and threading the Bosch 17126 sensor into the exhaust port. The 22 mm hex size allows use of a standard oxygen sensor socket. Ensure the wiring harness is routed away from hot exhaust components to prevent damage. The specific fitment for BMW and Rolls-Royce models means no modifications are necessary. Verify connector compatibility before installation to ensure a secure electrical connection.

Quality Assurance and Warranty

Bosch oxygen sensors are manufactured to meet strict quality standards, ensuring reliable operation and longevity. The Actual OE Oxygen Sensor 17126 is a standard replacement part designed to match OEM specifications. While specific warranty details may vary, Bosch typically offers coverage against defects in materials and workmanship, providing confidence in the sensor's performance for BMW and Rolls-Royce applications.