Bosch 15379 Oxygen Sensor - Downstream

Bosch Validated Oxygen Sensor for Mini

Bosch Validated Oxygen Sensor 15379 is a specific-fit, narrow-band heated O2 sensor built for downstream use on select Mini applications. It provides precise air-fuel-ratio feedback to the ECU so the engine can maintain stable combustion control and emissions performance across changing operating conditions.

For Mini Cooper, Cooper Countryman, and Cooper Paceman applications, this Bosch oxygen sensor uses a threaded 18 mm mount, 4-wire blade terminals, and a rectangular male connector with the included wiring harness for a direct replacement-style installation.

Key Features

• Specific-fit Bosch oxygen sensor for downstream placement
• Narrow-band heated sensor design for closed-loop fuel control
• 18 mm thread diameter with 22 mm hex size
• 4-wire configuration with blade terminals and rectangular connector
• Metal housing with high-temperature-resistant construction
• Wiring harness included
• Bosch Validated Oxygen Sensor line for OE-style replacement needs

OE-Validated Sensor Line

The Bosch Validated Oxygen Sensor line reflects Bosch’s long OE development history in oxygen sensing technology. Bosch pioneered early oxygen sensor designs and later advanced planar narrowband construction for faster light-off, improved lambda accuracy, and quicker closed-loop operation. Part number 15379 carries that OE-focused engineering into the aftermarket for drivers who need stable sensor response and consistent emissions feedback.

This part cross-references BMW/Mini OE number 11787548961 for the same application.

What This Sensor Helps Address

• Check engine light caused by a failing downstream oxygen sensor
• Unstable air-fuel ratio feedback to the ECU
• Reduced emissions control performance
• Slow sensor response during closed-loop operation
• Driveability issues related to inaccurate exhaust oxygen readings

Installation Notes

Fits 2007-2015 Mini Cooper, downstream. Fits 2011-2016 Mini Cooper Countryman, downstream. Fits 2013-2016 Mini Cooper Paceman, downstream. Verify connector shape, thread size, and downstream location before installation. Use the existing threaded mounting point and confirm the harness routing matches the original sensor path.

Quality Assurance

Bosch backs this oxygen sensor with more than five decades of OE development experience. The sensor uses advanced ceramic elements, optimized heater control, and heat-resistant materials to maintain consistent performance under thermal and vibration load.