Bosch 16413 Oxygen Sensor - Downstream or Downstream Front

Bosch OE Oxygen Sensor for BMW

Bosch Part Number 16413 is an Actual OE Oxygen Sensor built for precise air-fuel-ratio feedback to the ECU. It supports stable combustion control and emissions management on select BMW applications, including BMW 328i, BMW 335i, BMW X5, and other listed models.

This Bosch Actual OE Oxygen Sensor line reflects Bosch’s long OE development history, including narrowband switching sensor designs with fast light-off, accurate lambda measurement, and reliable closed-loop response. Part number 16413 uses a heated narrow-band design with a threaded mount and specific-fit harness for direct replacement service.

Key Features

• Specific-fit Bosch oxygen sensor for select BMW emission control applications
• Heated narrow-band sensor type for faster closed-loop operation
• 4-wire design with pin terminals and round connector shape
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Wiring harness included with 19.2 in harness length
• Metal housing and steel finish for underbody exhaust service
• Bosch Part Number 16413 for OE-style replacement identification

Detailed Description

Bosch 16413 is an Actual OE Oxygen Sensor engineered for downstream front and downstream locations on select BMW vehicles. It measures exhaust oxygen content and sends accurate switching-type signals to the ECU, helping maintain the correct air-fuel ratio during normal driving and load changes. The narrow-band heated design uses advanced ceramic sensing elements and heater control to improve response time and maintain consistent operation in demanding exhaust temperatures.

Compatible With select BMW fitments including 2006-2013 BMW 328i, 2007-2013 BMW 335i, 2007-2010 BMW X3, 2007-2010 BMW X5, 2008-2013 BMW 128i, and 2009-2016 BMW Z4. Bosch Part Number 16413 is also listed for 2007-2008 BMW 328xi, 2007-2008 BMW 335xi, and 2011 BMW 1 Series M applications where the OE-style sensor location matches the catalog listing.

This part cross-references BMW 11787545074 for the same application.

What This Sensor Helps Address

• Check engine light related to oxygen sensor signal faults
• Rich or lean fuel trim conditions caused by inaccurate exhaust feedback
• Slow sensor response that can affect closed-loop fuel control
• Emissions test failures tied to a worn downstream oxygen sensor
• Rough combustion control from degraded heater performance

Installation Notes and Tips

Verify the connector shape, wire count, thread size, and sensor position before installation. This Bosch oxygen sensor uses a threaded mount, 4-wire configuration, and specific-fit harness, so it should be matched to the exact BMW application listed in the fitment data. Inspect the exhaust bung threads and connector routing before tightening the sensor to the specified location.

For BMW 328i, BMW 335i, and BMW X5 applications, confirm whether the vehicle uses the downstream front or downstream position shown in the catalog notes. Because this sensor is listed for exhaust manifold and cylinder-bank locations on certain models, matching the exact position is important for proper operation.

Quality Assurance

Bosch supplies this Actual OE Oxygen Sensor using OE-proven development and materials selected for high-temperature and vibration exposure. The design reflects Bosch’s long-standing oxygen sensor engineering for accurate lambda control and durable aftermarket replacement performance.