Bosch 15719 Oxygen Sensor

Bosch Actual OE Oxygen Sensor 15719

Bosch 15719 is a narrow-band heated oxygen sensor built for precise air-fuel ratio feedback to the ECU. It supports stable combustion control and emissions management across changing engine loads, temperatures, and driving conditions.

For Ford Ranger, Mazda Tribute, and Mazda B2300 applications, this Bosch Actual OE Oxygen Sensor follows OE-style fitment and signal behavior for downstream and selected upstream positions. The 4-wire, heated design uses a threaded mount, round male connector, and included wiring harness for direct replacement service.

Key Features

• Part number 15719 Bosch Actual OE Oxygen Sensor
• Narrow-band heated oxygen sensor for closed-loop fuel control
• Specific fit replacement with threaded mounting
• 4-wire design with blade terminals and round male connector
• Wiring harness included; harness length 21.5 in
• Metal housing with 22 mm hex size and 18 mm thread diameter
• Standard replacement grade for OE-style service

Product Line Details

Bosch Actual OE Oxygen Sensor products draw on Bosch OE development that began with early oxygen sensor designs and later evolved into planar narrowband technology. That engineering focus is reflected in faster light-off, improved lambda measurement accuracy, and quicker closed-loop operation under heat and vibration.

Detailed Description

Bosch 15719 is engineered as a switching-type oxygen sensor that reports exhaust oxygen content to the engine control unit so fuel delivery can be adjusted accurately. The heated narrow-band design helps the sensor reach operating temperature faster and maintain consistent signal output during normal driving and high-temperature exhaust conditions. This makes it a practical replacement for vehicles that rely on downstream oxygen sensor feedback for emissions control and drivability.

This part cross-references AJ0318861D and ZZC018860 for the same application. It is a direct service option for many Ford Ranger, Mazda Tribute, and Mazda B2300 configurations listed below.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Rich or lean fuel trim readings caused by a worn sensor
• Slow sensor response during closed-loop operation
• Emissions test failures tied to exhaust feedback faults
• Rough idle or inconsistent fuel control from inaccurate O2 data

Installation Notes and Fitment

Fits 2010 Ford Ranger, downstream, with 19 in wire; Actual OE Oxygen Sensor.

Fits 2004-2010 Ford Ranger, downstream, with 18.9 in wire; Actual OE Oxygen Sensor.

Fits 2010 Mazda B2300, downstream, with 19 in wire; Actual OE Oxygen Sensor.

Fits 2008-2009 Mazda B2300, downstream, with 22 in wire; Actual OE Oxygen Sensor.

Fits 2001-2003 Mazda B2300, downstream, with 22 in wire; Actual OE Oxygen Sensor.

Fits 2007-2008 Ford Escape, downstream front, Bosch Engineered Oxygen Sensor.

Fits 2008-2011 Mazda Tribute, downstream left, Bosch Engineered Oxygen Sensor.

Fits 2008-2011 Mazda Tribute, downstream right, Bosch Engineered Oxygen Sensor.

Fits 2005-2006 Mazda Tribute, downstream left, Bosch Engineered Oxygen Sensor.

Fits 2001-2006 Ford Escape, downstream right, Bosch Engineered Oxygen Sensor.

Before installation, confirm connector shape, wire count, thread size, and sensor position against the original unit. Use the vehicle’s exact downstream or upstream location listed in the fitment data, and verify harness length where the application notes specify a wire length.

Quality Assurance

Bosch supplies OE-proven oxygen sensor technology to the aftermarket, using ceramic sensing elements, controlled heater operation, and high-temperature materials for consistent service life in demanding exhaust environments.