Bosch 16155 Oxygen Sensor - Downstream Left or Downstream Right

Bosch OE Oxygen Sensor for Land Rover

Bosch Actual OE Oxygen Sensor 16155 is a narrow-band heated replacement built for precise air-fuel-ratio feedback to the ECU. It supports stable combustion control and emissions monitoring for select Land Rover Range Rover, Range Rover Sport, and Discovery applications.

Key Features

• Bosch Actual OE Oxygen Sensor line for OE-style replacement performance
• Narrow-band heated sensor with 4-wire configuration
• Specific-fit design with threaded mounting and rectangle connector
• Metal housing with high-temperature-resistant construction
• Wiring harness included with 21.9 in harness length and 24 in sealing-surface-to-connector length
• 22 mm hex size and 18 mm thread diameter for direct replacement applications

Product Details

Bosch part number 16155 uses advanced ceramic sensing elements and optimized heater control to deliver fast light-off and consistent closed-loop operation. As part of Bosch’s Actual OE Oxygen Sensor line, this sensor reflects the company’s long OE development history and is built for demanding thermal and vibration conditions. It is a direct-fit, standard replacement oxygen sensor for downstream right applications on 2015-2022 Land Rover models, with one downstream left application listed for the 2015 Range Rover.

This part cross-references LR140073 for the same application. If you are replacing a downstream oxygen sensor on a Land Rover Range Rover Sport, Range Rover, or Discovery, Bosch 16155 provides the OE-style fit and signal response expected for emissions control service.

Vehicle Fitment

• Fits 2021-2022 Land Rover Range Rover Sport, downstream right.
• Fits 2017-2020 Land Rover Discovery, downstream right; located after primary converter; Super Ultra Low Emission Vehicle (SULEV).
• Fits 2016-2020 Land Rover Range Rover, downstream right; located after primary converter; Super Ultra Low Emission Vehicle (SULEV).
• Fits 2015-2019 Land Rover Range Rover Sport, downstream right; located after primary converter.
• Fits 2015-2016 Land Rover Range Rover, downstream right; located after primary converter.
• Fits 2015 Land Rover Range Rover, downstream left; located after primary converter.

Common Issues This Sensor Addresses

• Fault codes related to oxygen sensor response or heater circuit performance
• Rough idle or unstable fuel control caused by inaccurate exhaust feedback
• Failed emissions inspection due to a worn downstream sensor
• Delayed closed-loop operation after startup
• Reduced sensor accuracy from heat cycling and vibration exposure

Installation Notes and Tips

Confirm the connector shape, wire count, and mounting position before installation. This Bosch 16155 sensor is specific fit and threaded, so match the downstream right or downstream left location exactly to the vehicle listing. Inspect the exhaust threads and connector condition before installation, and verify the sensor is routed away from hot or moving components.

Quality Assurance

Bosch supplies this Actual OE Oxygen Sensor using OE-developed design principles, including heated narrow-band sensing and durable materials selected for harsh exhaust environments. The result is a replacement sensor built to maintain accurate feedback control in the same type of applications vehicle manufacturers specify.