Bosch 17000 Oxygen Sensor - Upstream

Bosch Wideband OE Oxygen Sensor

Bosch Actual OE Oxygen Sensor 17000 is a heated wide-band air/fuel sensor built for precise upstream mixture monitoring. It delivers continuous lambda feedback to the ECU, helping maintain accurate fuel control on BMW applications that require OE-level signal quality.

Compatible With BMW X3, BMW X4, BMW 640i Gran Coupe, BMW 640i xDrive Gran Coupe, BMW 740i, BMW 740Li, BMW 740Li xDrive, BMW ActiveHybrid 7, BMW 640i, and BMW 535i xDrive in the upstream position.

Key Features

• Wide-band oxygen sensor for continuous air-fuel ratio measurement
• Heated design for faster light-off and stable operation
• Specific-fit replacement with 5-wire, rectangular male connector
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Wiring harness included with approximately 29.1 in wire length
• Steel finish and metal housing for OE-style durability
• Bosch part number 17000 for direct catalog reference

Product Details

Bosch’s Actual OE Oxygen Sensor line focuses on OE-proven sensor technology for modern engine management systems. This Bosch 17000 wideband A/F sensor uses a planar pump-cell design and optimized heater control to provide detailed upstream feedback across the full lambda range. That level of signal detail helps the ECU manage fuel delivery more accurately during idle, acceleration, and load changes. This part cross-references BMW 11787589476 for the same application.

Fits 2011-2017 BMW X3, upstream. Fits 2015-2016 BMW X4, upstream. Fits 2013-2015 BMW 640i Gran Coupe, upstream. Fits 2014 BMW 640i xDrive Gran Coupe, upstream. Fits 2013-2014 BMW 740i, upstream. Fits 2013-2014 BMW 740Li, upstream. Fits 2013-2014 BMW 740Li xDrive, upstream. Fits 2013-2014 BMW ActiveHybrid 7, upstream. Fits 2012-2013 BMW 640i, upstream. Fits 2011-2012 BMW 535i xDrive, upstream.

What It Helps Address

• Faulty upstream oxygen sensor readings
• Rich or lean air-fuel mixture codes
• Reduced fuel economy from inaccurate mixture control
• Rough idle or hesitation tied to sensor signal drift
• Emission test failures caused by sensor performance issues

Installation Notes

Verify the connector shape, 5-wire configuration, and threaded mounting style before installation. This is a specific-fit upstream sensor, so match the vehicle application and sensor location exactly. Inspect the harness routing and exhaust threads during replacement, and confirm the sensor seats properly to avoid exhaust leaks or signal errors. Bosch 17000 is a direct replacement for listed BMW applications, including BMW X3 and BMW 640i models.

Quality Assurance

Bosch has more than five decades of OE sensor development and supplies oxygen sensors to vehicle manufacturers and the aftermarket. The Bosch 17000 is built to OE standards for accurate signal response, thermal durability, and consistent operation in demanding engine conditions.