Bosch 16147 Oxygen Sensor - Downstream

Bosch OE Oxygen Sensor for Porsche

Bosch 16147 is an Actual OE Oxygen Sensor built as a narrow-band heated replacement for downstream exhaust monitoring. It provides precise air-fuel-ratio feedback to the ECU, helping maintain stable combustion control and emissions performance in Porsche applications.

Key Features

• Actual OE Oxygen Sensor from Bosch Actual OE Oxygen Sensor line
• Narrow-band heated sensor design for downstream use
• Specific fit with threaded mounting and 18 mm thread diameter
• 4-wire harness with oblong female connector and pin terminals
• Metal housing with high-temperature-resistant construction
• Wiring harness included for direct replacement service
• Fits 2009-2012 Porsche Boxster, downstream
• Fits 2009-2012 Porsche Cayman, downstream
• Fits 2011 Porsche 911, downstream

Product Details

Bosch 16147 is engineered for downstream oxygen sensor service on Porsche Boxster, Cayman, and 911 models listed in the fitment data. Bosch developed its oxygen sensor technology from early OE designs and later planar narrowband layouts that improve light-off response, lambda accuracy, and closed-loop operation. This sensor uses advanced ceramic elements, controlled heating, and durable materials to deliver consistent signal output under heat and vibration.

This part cross-references 9A160612401 for the same application.

Common Symptoms It Can Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio feedback to the ECU
• Rough or unstable closed-loop fuel control
• Emissions test failure tied to downstream sensor readings
• Slow sensor response after exhaust heat cycling

Installation Notes

Install Bosch 16147 in the threaded downstream exhaust location specified for the vehicle. Verify connector shape, wire count, and harness length before installation, and inspect the exhaust bung threads and sealing surface for damage or contamination. Use proper oxygen sensor service tools and follow factory torque and routing procedures to avoid harness heat exposure.

Quality Assurance

Bosch backs this oxygen sensor with more than five decades of OE development and aftermarket supply experience. The design reflects Bosch OE engineering standards for accurate signal control, thermal durability, and long-term service consistency.