OE Quality
60-Day Returns

Bosch 16155 Oxygen Sensor - Downstream Left or Downstream Right
Reliable Oxygen Sensor for Land Rover Discovery and Range Rover Models
The Bosch Actual OE Oxygen Sensor 16155 is designed specifically for select Land Rover vehicles, including Discovery, Range Rover, and Range Rover Sport models. This narrow-band heated oxygen sensor ensures accurate emissions control and optimal engine performance by precisely monitoring exhaust gases.
- Brand: Bosch, Brand Line: Actual OE Oxygen Sensor
- Part Number: 16155
- Specific fit for Land Rover Discovery, Range Rover, and Range Rover Sport
- Narrow-band heated oxygen sensor type with 4-wire configuration
- Threaded mounting type with 18 mm thread diameter and 22 mm hex size
- Wiring harness length: 21.9 inches; overall length: 25.2 inches
- Connector: Male, rectangular shape with 4 blade terminals
- Housing made of durable metal with steel finish
- Standard replacement grade for reliable emissions control
About the Bosch Actual OE Oxygen Sensor Line
The Actual OE Oxygen Sensor line by Bosch is engineered to meet original equipment specifications, providing a direct replacement for factory-installed sensors. This ensures compatibility and performance consistency for your Land Rover Discovery, Range Rover, or Range Rover Sport. The 16155 sensor maintains precise exhaust gas readings to support your vehicle’s emission system and fuel management.
Product Details and Specifications
This Bosch oxygen sensor features a narrow-band heated design with four wires, allowing for faster sensor warm-up and improved accuracy in measuring oxygen levels in the exhaust stream. The threaded mounting type with an 18 mm diameter and 22 mm hex size allows for secure installation. The sensor’s wiring harness is 21.9 inches long, with an overall length of 25.2 inches, providing sufficient reach for proper connection. The connector is male with a rectangular shape and four blade terminals, ensuring a secure and reliable electrical connection. Constructed with a metal housing and steel finish, this sensor is built to withstand harsh engine conditions.
Common Applications and Issues Addressed
- Restores accurate oxygen sensing for proper air-fuel mixture control
- Helps resolve check engine light triggers related to oxygen sensor faults
- Improves fuel efficiency by providing precise emissions data
- Reduces harmful exhaust emissions by supporting catalytic converter function
- Prevents engine performance issues caused by faulty oxygen sensors
Installation Notes and Tips
When installing the Bosch 16155 oxygen sensor, ensure the engine is cool to avoid burns. Use a 22 mm oxygen sensor socket for removal and installation. Verify the sensor’s wiring harness length and connector type match your vehicle’s specifications. Do not overtighten the sensor; torque to manufacturer specifications to avoid damage. Since this sensor is a specific fit for Land Rover Discovery, Range Rover, and Range Rover Sport models, confirm compatibility before installation.
Quality Assurance and Warranty
Bosch oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. The Actual OE Oxygen Sensor line is designed to match original equipment specifications for fit and function. While specific warranty details are not provided here, Bosch typically offers a limited warranty on their emission control sensors. Refer to Bosch or your parts provider for exact warranty terms.
| Brand | Bosch |
| Part Number | 16155 |
| Position | Actual OE Oxygen Sensor, Downstream Right and Downstream Left |
| Wiring Harness Length | 21.9 |
| Terminal Type | Blade |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Grade Type | Standard replacement |
| Connector Shape | Rectangle |
| Terminal Quantity | 4 |
| Connector Gender | Male |
| Terminal Gender | Male |
| Overall Length | 25.2 |
| Mounting Type | Threaded |
| Automotive Color / Finish | Steel |
| Automotive Item Weight (lbs) | 0.209439 lb |
| Heated (Oxygen Sensor) | Yes |
| Hex Size (Oxygen Sensor) | 22 mm |
| Housing Material | Metal |
| Length (Sealing Surface To End Of Connector) | 24 in |
| Mounting Bracket Included | No |
| Oxygen Sensor Type | Narrow-band heated |
| Sensor Type | Narrow-band |
| Thread Diameter (Oxygen Sensor) | 18 mm |
| Thread Size | 18 |
| Wiring Harness Included | Yes |
This part fits 27 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2022 | Land Rover | Range Rover Sport | 5.0L | V8 | Downstream Right | Actual OE Oxygen Sensor |
| 2021 | Land Rover | Range Rover Sport | 5.0L | V8 | Downstream Right | Actual OE Oxygen Sensor |
| 2020 | Land Rover | Discovery | 3.0L | V6 | Downstream Right | Located After Primary Converter; Super Ultra Low Emission Vehicle (SULEV); Actual OE Oxygen Sensor |
| 2020 | Land Rover | Range Rover | 5.0L | V8 | Downstream Right | Located After Primary Converter; Super Ultra Low Emission Vehicle (SULEV); Actual OE Oxygen Sensor |
| 2019 | Land Rover | Discovery | 3.0L | V6 | Downstream Right | Located After Primary Converter; Super Ultra Low Emission Vehicle (SULEV); Actual OE Oxygen Sensor |
| 2019 | Land Rover | Range Rover | 5.0L | V8 | Downstream Right | Located After Primary Converter; Super Ultra Low Emission Vehicle (SULEV); Actual OE Oxygen Sensor |
| 2019 | Land Rover | Range Rover | 3.0L | V6 | Downstream Right | Located After Primary Converter; Super Ultra Low Emission Vehicle (SULEV); Actual OE Oxygen Sensor |
| 2019 | Land Rover | Range Rover Sport | 3.0L | V6 | Downstream Right | Located After Primary Converter; Actual OE Oxygen Sensor |
| 2018 | Land Rover | Discovery | 3.0L | V6 | Downstream Right | Located After Primary Converter; Super Ultra Low Emission Vehicle (SULEV); Actual OE Oxygen Sensor |
| 2018 | Land Rover | Range Rover | 5.0L | V8 | Downstream Right | Located After Primary Converter; Super Ultra Low Emission Vehicle (SULEV); Actual OE Oxygen Sensor |
| 2018 | Land Rover | Range Rover | 3.0L | V6 | Downstream Right | Located After Primary Converter; Super Ultra Low Emission Vehicle (SULEV); Actual OE Oxygen Sensor |
| 2018 | Land Rover | Range Rover Sport | 5.0L | V8 | Downstream Right | Located After Primary Converter; Actual OE Oxygen Sensor |
| 2018 | Land Rover | Range Rover Sport | 3.0L | V6 | Downstream Right | Located After Primary Converter; Actual OE Oxygen Sensor |
| 2017 | Land Rover | Discovery | 3.0L | V6 | Downstream Right | Located After Primary Converter; Super Ultra Low Emission Vehicle (SULEV); Actual OE Oxygen Sensor |
| 2017 | Land Rover | Range Rover | 3.0L | V6 | Downstream Right | Located After Primary Converter; Super Ultra Low Emission Vehicle (SULEV); Actual OE Oxygen Sensor |
| 2017 | Land Rover | Range Rover | 5.0L | V8 | Downstream Right | Located After Primary Converter; Super Ultra Low Emission Vehicle (SULEV); Actual OE Oxygen Sensor |
| 2017 | Land Rover | Range Rover Sport | 5.0L | V8 | Downstream Right | Located After Primary Converter; Actual OE Oxygen Sensor |
| 2017 | Land Rover | Range Rover Sport | 3.0L | V6 | Downstream Right | Located After Primary Converter; Actual OE Oxygen Sensor |
| 2016 | Land Rover | Range Rover | 5.0L | V8 | Downstream Right | Located After Primary Converter; Actual OE Oxygen Sensor |
| 2016 | Land Rover | Range Rover | 3.0L | V6 | Downstream Right | Located After Primary Converter; Actual OE Oxygen Sensor |
| 2016 | Land Rover | Range Rover | 3.0L | V6 | Downstream Right | Located After Primary Converter; Super Ultra Low Emission Vehicle (SULEV); Actual OE Oxygen Sensor |
| 2016 | Land Rover | Range Rover Sport | 5.0L | V8 | Downstream Right | Located After Primary Converter; Actual OE Oxygen Sensor |
| 2016 | Land Rover | Range Rover Sport | 3.0L | V6 | Downstream Right | Located After Primary Converter; Actual OE Oxygen Sensor |
| 2015 | Land Rover | Range Rover | 5.0L | V8 | Downstream Left | Located After Primary Converter; Actual OE Oxygen Sensor |
| 2015 | Land Rover | Range Rover | 3.0L | V6 | Downstream Right | Located After Primary Converter; Actual OE Oxygen Sensor |
| 2015 | Land Rover | Range Rover Sport | 5.0L | V8 | Downstream Right | Located After Primary Converter; Actual OE Oxygen Sensor |
| 2015 | Land Rover | Range Rover Sport | 3.0L | V6 | Downstream Right | Located After Primary Converter; Actual OE Oxygen Sensor |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.