Bosch 17263 Oxygen Sensor - Upstream or Upstream Right

Bosch Wideband OE Oxygen Sensor

Bosch 17263 is an Actual OE Oxygen Sensor built for precise air-fuel ratio measurement in modern engine management systems. This wideband, heated sensor delivers continuous feedback to the ECU, helping maintain accurate mixture control on applications such as the 2011 Ford F-150 upstream right and the 2012 Ford Focus upstream.

Key Features

• Wide-band sensor type for detailed air-fuel ratio monitoring across the full lambda range
• Heated design for faster sensor warm-up and stable operation
• Specific-fit application with a 5-wire harness and included wiring harness
• Oblong male connector with blade terminals and 6 terminal positions
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Metal housing and robust ceramic construction for thermal durability
• Overall length: 17.7 in; sealing surface to connector end: 16.5 in

Product Details

Bosch 17263 is part of the Bosch Actual OE Oxygen Sensor line, which focuses on OE-style replacement sensors engineered to match original equipment performance requirements. Bosch pioneered the wideband A/F oxygen sensor design used in modern engine control, and this sensor reflects that OE development with fast light-off, optimized heater control, and precise signal output. It is a direct-fit replacement for select Ford and Lincoln applications, including the 2011 Ford Mustang upstream, 2011 Ford Taurus upstream, 2011 Ford Flex upstream, 2011 Lincoln MKS upstream, and 2011 Lincoln MKT upstream.

This part cross-references Bosch 17263 for the same application.

Common Issues This Sensor Can Address

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

Installation Notes

Verify the upstream sensor location and vehicle build date before ordering, since the listed fitments apply to specific production cutoffs. Confirm connector shape, wire count, thread size, and harness length against the original sensor on your Ford Focus, F-150, Flex, Mustang, Taurus, Lincoln MKS, or Lincoln MKT. Use proper oxygen sensor service tools and follow factory torque and routing specifications to protect the harness and threaded bung.

Quality Assurance

Bosch backs this oxygen sensor with more than five decades of OE development and aftermarket supply experience. The design uses OE-proven engineering principles for accurate signal control, reliable heater performance, and durable construction under demanding thermal cycles.