Bosch 16145 Oxygen Sensor - Downstream

Bosch OE Oxygen Sensor for Porsche 911

Bosch 16145 is an Actual OE Oxygen Sensor built for precise air-fuel ratio feedback in the exhaust stream. It is a narrow-band heated sensor with a threaded mount, specific-fit connector, and wiring harness included for direct replacement on select Porsche 911 applications.

Key Features

• Actual OE Oxygen Sensor from Bosch
• Narrow-band heated sensor for closed-loop fuel control
• Specific-fit design with 4-wire, female oblong connector
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Metal housing and high-temperature-resistant construction
• Wiring harness length: 29.3 in; overall length: 32.7 in

Product Details

Bosch 16145 uses a switching-type oxygen sensor design to send accurate exhaust oxygen readings to the ECU, helping maintain stable combustion control and emissions performance. Bosch developed this sensor line from its OE oxygen sensor engineering history, including planar narrowband technology that supports faster light-off and quicker closed-loop operation. For Porsche 911 owners searching for a downstream oxygen sensor replacement, Bosch 16145 provides OE-proven sensor architecture and fitment-specific hardware layout for the 2009-2012 Porsche 911, downstream. This part cross-references Bosch OE-style replacement applications such as 9A160617702 for the same vehicle coverage.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio readings at the ECU
• Rough idle or unstable fuel control after sensor wear
• Emissions test failures tied to downstream sensor output
• Slow sensor response from heat cycling and vibration exposure

Installation Notes and Tips

Fits 2009-2012 Porsche 911, downstream. Confirm the connector shape, wire count, and threaded sensor location before installation. Use the correct 22 mm oxygen sensor socket and verify the 18 mm thread size matches the exhaust bung. Because this is a specific-fit Bosch oxygen sensor, compare the original harness routing and sealing surface length to the removed unit before final tightening.

Quality Assurance

Bosch backs this oxygen sensor with more than five decades of OE development in oxygen sensing technology. The sensor uses ceramic elements, controlled heater operation, and heat-resistant materials selected for demanding exhaust conditions.