Bosch 17187 Oxygen Sensor - Upstream

Bosch Wideband OE Oxygen Sensor

Bosch 17187 is an Actual OE Oxygen Sensor built for precise air-fuel ratio measurement on select BMW and Mini applications. This wideband upstream sensor uses a heated design, a 5-wire harness, and a specific-fit connector layout to deliver accurate feedback to the engine control unit across the full lambda range.

For drivers searching for a BMW X5 upstream oxygen sensor, BMW 750i oxygen sensor replacement, or a Mini Cooper upstream wideband O2 sensor, Bosch 17187 provides OE-style fitment and sensor response for emission control and engine management.

Key Features

• Wideband A/F oxygen sensor for continuous air-fuel ratio monitoring
• Heated sensor design for faster operating temperature and stable readings
• Specific fit with square male connector and included wiring harness
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Robust metal housing for demanding exhaust conditions
• Actual OE Oxygen Sensor line from Bosch
• Bosch part number 17187 for catalog and cross-reference use

Product Details

Bosch’s Actual OE Oxygen Sensor line focuses on direct-replacement sensors that match the needs of modern engine management systems. This wideband sensor measures the air-fuel mixture with greater detail than a traditional switching sensor, helping the ECU maintain accurate control during idle, cruise, acceleration, and load changes. Bosch pioneered the planar pump-cell wideband design, and that OE development is reflected in the sensor’s fast light-off, controlled heater operation, and durable ceramic construction. Part number 17187 is a direct-fit solution for upstream locations on many BMW and Mini models, including BMW 650i, BMW X5, BMW 750i, and Mini Cooper applications.

This part cross-references URO 11787576673 for the same application.

What It Helps Address

• Check engine light related to upstream oxygen sensor performance
• Incorrect air-fuel ratio readings from a worn wideband sensor
• Rough idle or hesitation caused by inaccurate exhaust feedback
• Reduced fuel economy from poor mixture control
• Emission test failures tied to sensor response issues

Installation Notes

Fits 2008-2019 BMW X6, Upstream. Fits 2010-2018 BMW X5, Upstream. Fits 2009-2015 BMW 750i, Upstream. Fits 2011-2015 Mini Cooper, Upstream. Verify connector shape, thread size, and upstream location before installation. Use the existing threaded mounting point and route the harness away from heat sources and moving components. Clear diagnostic trouble codes after replacement and confirm live data response with a scan tool.

Quality Assurance

Bosch backs this sensor with more than five decades of OE development in engine management and emissions technology. The Actual OE Oxygen Sensor line is built to OE-proven standards for accurate signal output, thermal durability, and consistent operation in modern wideband applications.