Bosch 17094 Oxygen Sensor - Upstream

Bosch Wideband OE Oxygen Sensor

Bosch Part Number 17094 is an actual OE wideband air-fuel oxygen sensor built for precise mixture feedback and stable engine management. It uses a heated, specific-fit design with a 5-wire harness and 6-terminal blade connection for direct replacement on select BMW applications.

Key Features

• Wideband A/F oxygen sensor for continuous air-fuel ratio measurement across the full lambda range
• Heated sensor design for faster light-off and improved cold-start response
• Specific-fit configuration with included wiring harness
• 18 mm thread diameter and 22 mm hex size for threaded mounting
• Metal housing with robust ceramic sensor construction
• Overall length: 42.1 in; sealing surface to connector end: 40.9 in
• Connector shape: oblong; connector gender: male; terminal type: blade

Product Details

Bosch 17094 is part of the Bosch Actual OE Oxygen Sensor line, a product line focused on OE-style replacement sensors built from Bosch’s long-running oxygen sensing development. This wideband sensor provides detailed feedback to the ECU, allowing more exact fuel control than a traditional switching sensor. That makes it a direct-fit choice for BMW models that require upstream wideband oxygen sensor performance, including BMW X3, BMW 528i, BMW 550i, BMW 650i, and BMW X5 applications listed below.

This part cross-references Bosch OE-style replacement applications such as 11787558081 for the same vehicle fitment.

Vehicle Fitment

• Fits 2011-2012 BMW X3, Upstream, Actual OE Oxygen Sensor
• Fits 2011 BMW 528i, Upstream, Actual OE Oxygen Sensor
• Fits 2006-2010 BMW 550i, Upstream Left, Actual OE Oxygen Sensor
• Fits 2006-2010 BMW 650i, Upstream Left, Actual OE Oxygen Sensor
• Fits 2007-2010 BMW X5, Upstream, Cylinder(s) 4, 5, and 6; Actual OE Oxygen Sensor

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio readings at the ECU
• Rough idle or drivability issues tied to upstream sensor feedback
• Reduced fuel economy from inaccurate mixture control
• Higher emissions caused by delayed or inconsistent sensor response

Installation Notes

Confirm the connector style, wire count, and upstream position before installation. This Bosch 17094 sensor uses a threaded mount with an 18 mm thread size and a male oblong connector, so matching the original sensor configuration is important for proper fitment on BMW X3, BMW 528i, BMW 550i, BMW 650i, and BMW X5 applications.

Quality Assurance

Bosch backs this Actual OE Oxygen Sensor line with more than five decades of OE development and aftermarket supply experience. The sensor is engineered to OE specifications for accurate signal delivery, reliable heater control, and consistent performance under changing load and temperature conditions.