Bosch 17475 Oxygen Sensor - Upstream or Upstream Right

Bosch Wideband OE Oxygen Sensor

Bosch 17475 is an Actual OE Oxygen Sensor built as a wideband air-fuel ratio sensor for precise upstream mixture monitoring. It provides the ECU with continuous, high-resolution feedback across the full lambda range, helping maintain accurate fuel control in Ford, Lincoln, Mazda, and Mercury applications.

For drivers searching for a Bosch 17475 oxygen sensor for 2009-2012 Ford Escape, 2010-2012 Ford Fusion, or 2011-2012 Lincoln MKZ, this sensor matches the original upstream application and uses OE-style construction for direct replacement service.

Key Features

• Wideband A/F sensor for continuous air-fuel ratio measurement
• Heated design for faster sensor warm-up and stable operation
• Specific fit replacement with threaded mounting
• 5-wire harness with included wiring harness and oblong male connector
• Metal housing with robust ceramic sensor construction
• 18 mm thread diameter and 22 mm hex size
• Overall length: 17.7 in; sealing surface to connector end: 16.5 in
• Actual OE Oxygen Sensor line from Bosch

Product Details

Bosch pioneered the wideband oxygen sensor design used in modern engine management, and the 17475 follows that OE-focused approach with fast light-off and optimized heater control. As a Bosch Actual OE Oxygen Sensor, it is engineered for upstream locations where the ECU relies on precise feedback to manage fuel delivery, drivability, and emissions performance. This part number 17475 is a direct-fit option for vehicles including Ford Escape, Ford Fusion, Lincoln MKZ, and related Ford/Lincoln/Mercury platforms listed in the fitment data.

This part cross-references Monroe Shocks & Struts (e.g., ZZDA18861) for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio readings from a worn upstream sensor
• Rough idle, hesitation, or inconsistent throttle response tied to mixture control
• Reduced fuel economy caused by inaccurate exhaust feedback
• Higher emissions from delayed or unstable sensor response

Installation Notes and Tips

Install Bosch 17475 in the upstream position only where specified by the vehicle fitment. Confirm connector shape, terminal count, thread size, and harness length before installation. Because this is a specific-fit sensor, compare the original sensor routing and connector orientation on the vehicle before final tightening. For search relevance, this Bosch oxygen sensor fits 2009-2012 Ford Escape upstream, 2010-2012 Ford Fusion upstream, and 2011-2012 Lincoln MKZ upstream.

Quality Assurance

Bosch backs this oxygen sensor with more than five decades of OE development and supplies aftermarket sensors built to OE-proven standards. The wideband design, heater control strategy, and durable construction reflect Bosch’s long history in engine management and emissions technology.