Bosch 17274 Oxygen Sensor - Upstream

Bosch Wideband O2 Sensor for Mustang

Bosch 17274 is an actual OE wideband air-fuel oxygen sensor built for precise upstream fuel-trim feedback. It fits 2011-2014 Ford Mustang, Upstream, and is engineered for accurate air-fuel ratio measurement across the full lambda range.

Key Features

• Fits 2011-2014 Ford Mustang, Upstream
• Wideband A/F oxygen sensor with heated design
• Specific-fit replacement with 5-wire harness and 6 terminals
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Oblong male connector with included wiring harness
• Overall length: 12.6 in; harness length: 9.3 in
• Bosch part number 17274

Product Details

Bosch 17274 is part of the Bosch Actual OE Oxygen Sensor line, which focuses on OE-style replacement sensors built to match modern engine-management requirements. This wideband sensor provides continuous air-fuel ratio data to the ECU, helping the system maintain precise mixture control during idle, cruise, acceleration, and load changes. For Ford Mustang applications, that means the upstream sensor can deliver the detailed feedback needed for stable drivability and emissions control.

Built with a metal housing, ceramic sensor construction, and optimized heater control, this Bosch wideband O2 sensor is made for fast light-off and consistent operation through repeated thermal cycling. Bosch 17274 is a direct-fit, threaded replacement for the specified Mustang upstream location and uses a male oblong connector for straightforward OE-style integration. Bosch 17274 is a practical choice when replacing a worn or slow-responding wideband sensor on 2011-2014 Ford Mustang models.

This part cross-references Bosch 17274 for the same application.

What It Helps Address

• Check engine light related to upstream oxygen sensor performance
• Incorrect air-fuel ratio readings reported to the ECU
• Rough idle or inconsistent throttle response caused by sensor drift
• Reduced fuel economy from inaccurate mixture control
• Emissions test failures tied to faulty wideband sensor output

Installation Notes

Install in the upstream oxygen sensor location specified for 2011-2014 Ford Mustang. Verify connector shape, thread size, and harness routing before installation. Use proper oxygen sensor service tools for removal and tightening, and inspect the exhaust bung threads and wiring path before final assembly. Bosch 17274 uses a specific-fit design, so confirm vehicle application by year, make, model, and position before ordering.

Quality Assurance

Bosch has more than five decades of OE development in oxygen sensor technology, and the Actual OE Oxygen Sensor line is built around OE-proven design principles for modern engine management systems.