Bosch 17083 Oxygen Sensor - Upstream

Bosch Wideband OE Oxygen Sensor

Bosch 17083 is an Actual OE Oxygen Sensor built as a wideband air-fuel sensor for precise upstream mixture monitoring. It provides continuous lambda-range measurement for BMW X1, BMW X2, Mini Cooper, Mini Cooper Clubman, and Mini Cooper Countryman applications where accurate fuel control matters.

Key Features

• Wideband A/F oxygen sensor for continuous air-fuel ratio measurement
• Heated design with optimized heater control for faster sensor response
• Specific-fit replacement with 5-wire, blade-terminal construction
• Rectangle male connector with included wiring harness
• Threaded mounting, 18 mm thread size, 22 mm hex size
• Metal housing with robust ceramic sensor construction
• Overall length: 26.9 in; sealing surface to connector end: 25.7 in

Product Details

Bosch 17083 uses the brand’s wideband oxygen sensor design to deliver detailed feedback to the ECU across the full lambda range. That level of signal detail supports precise fuel mixture control during idle, cruise, acceleration, and rapid load changes. As part of Bosch’s Actual OE Oxygen Sensor line, this sensor reflects the same OE development approach used in modern engine management systems and low-emission vehicle platforms.

This part cross-references BMW 11788600992 for the same application. Search terms such as Bosch 17083 oxygen sensor, upstream wideband O2 sensor for Mini Cooper, and BMW X1 upstream air-fuel ratio sensor all point to this OE-style replacement.

What It Helps Address

• Check engine light related to upstream oxygen sensor performance
• Incorrect air-fuel ratio readings at the ECU
• Reduced fuel economy from inaccurate mixture control
• Rough running or hesitation caused by poor sensor feedback
• Higher emissions from delayed or unstable sensor response

Installation Notes

Fits 2017-2024 Mini Cooper Countryman, Upstream. Fits 2018-2023 BMW X2, Upstream. Fits 2014-2021 Mini Cooper, Upstream. Fits 2016-2020 Mini Cooper Clubman, Upstream. Fits 2016-2019 BMW X1, Upstream.

Use the threaded mounting point and correct 18 mm oxygen sensor socket during service. Verify connector shape, wire count, and upstream location before installation. Because this is a specific-fit sensor, confirm vehicle year, model, and position against the listed applications before replacement.

Quality Assurance

Bosch has more than five decades of OE sensor development behind this part. The wideband design, fast light-off behavior, and durable construction are intended to meet the demands of modern BMW and Mini engine management systems.