Bosch 17452 Oxygen Sensor - Upstream

Bosch OE Oxygen Sensor for Ford Fiesta

Bosch 17452 is an Actual OE Oxygen Sensor built for precise air-fuel-ratio feedback to the ECU. It supports stable combustion control and emissions management for the 2014-2019 Ford Fiesta upstream application, including 2014-2018 Fiesta models with a 6-pin connector.

Key Features

• Actual OE Oxygen Sensor from Bosch
• Heated narrow-band sensor design for faster closed-loop operation
• Specific fit with threaded mounting and 18 mm thread size
• 6-terminal, male connector with oblong shape
• Wiring harness included with 14.4 in harness length
• Metal housing with high-temperature-resistant construction
• Upstream placement for Ford Fiesta emissions control

Product Details

Bosch 17452 uses Bosch switching-type oxygen sensor technology to measure exhaust oxygen content and send accurate air-fuel information to the ECU. Bosch developed this sensor family from its original OE oxygen sensor work and later planar narrowband designs, focusing on faster light-off, improved lambda accuracy, and quicker closed-loop response. For Ford Fiesta owners, this upstream sensor supports consistent fuel control under changing load and temperature conditions. This part cross-references Bosch OE-style applications for the same vehicle platform.

What This Sensor Helps Address

• Check engine light related to oxygen sensor performance
• Rich or lean fuel mixture faults
• Delayed closed-loop fuel control after startup
• Unstable idle or drivability issues tied to exhaust feedback
• Emissions test failures caused by inaccurate upstream sensor readings

Installation Notes and Fitment

Fits 2019 Ford Fiesta, upstream. Fits 2014-2018 Ford Fiesta, upstream, with 6 Pin Connector; Actual OE Oxygen Sensor. Bosch 17452 uses a threaded 18 mm mounting design and a 22 mm hex size, so proper oxygen sensor removal tools help prevent damage during service. Verify connector style, harness routing, and upstream location before installation on the Ford Fiesta.

Quality Assurance

Bosch backs this Actual OE Oxygen Sensor with more than five decades of OE development and aftermarket supply experience. The sensor is built with advanced ceramic elements, controlled heating, and heat-resistant materials to maintain consistent performance in demanding thermal and vibration conditions.