Bosch 17466 Oxygen Sensor - Upstream

Bosch Wideband OE Oxygen Sensor

Bosch 17466 is an actual OE wideband air-fuel oxygen sensor built for precise mixture feedback to the ECU. It is a specific-fit, heated replacement sensor with a 5-wire harness and 6-terminal blade connection for direct service on select BMW diesel applications.

Key Features

• Wideband A/F oxygen sensor for continuous air-fuel ratio measurement across the lambda range
• Heated design for faster sensor response and stable operation
• Specific-fit replacement with included wiring harness
• 18 mm thread diameter and 22 mm hex size
• Oblong male connector with male blade terminals
• Metal housing with robust ceramic sensor construction
• Overall length: 23.0 in; sealing surface to connector end: 21.9 in

Product Details

Bosch’s Actual OE Oxygen Sensor line focuses on OE-style fit, signal accuracy, and durability for modern engine management systems. Part number 17466 uses Bosch wideband technology to provide detailed air-fuel ratio data, helping the engine control module manage fueling more precisely than a traditional switching sensor. This matters on diesel applications where accurate upstream feedback supports cleaner combustion and consistent drivability. This part cross-references BMW 13627801158 for the same application.

Fits 2014-2018 BMW X5, upstream. Fits 2014-2016 BMW 535d, upstream. Fits 2014-2016 BMW 535d xDrive, upstream. Fits 2009-2011 BMW 335d, upstream. Fits 2009-2011 BMW X5, upstream, fitted in particulate filter; Actual OE Oxygen Sensor. Bosch 17466 is a direct-fit option for BMW X5 and BMW 535d diesel models where upstream oxygen sensor performance is critical to emissions control and engine management.

What It Helps Address

• Fault codes related to upstream oxygen sensor signal performance
• Rough idle or inconsistent fueling caused by inaccurate air-fuel feedback
• Reduced fuel economy from poor mixture control
• Elevated emissions from delayed or incorrect sensor response
• Driveability issues during load changes or thermal cycling

Installation Notes

Confirm the upstream sensor location and connector style before installation. The sensor uses an 18 mm thread and a threaded mounting type, so the exhaust bung must match the specified size. Inspect the harness routing, connector condition, and surrounding exhaust components before replacement. On BMW X5 and BMW 535d applications, verify the exact engine and model year against the fitment list to ensure the correct OE-style sensor is selected.

Quality Assurance

Bosch has decades of OE oxygen sensor development and introduced the planar wideband pump-cell design used widely in modern engine management. Bosch 17466 is built to OE specifications for accurate signal delivery, reliable heater control, and consistent performance in demanding exhaust conditions.