Bosch 16256 Oxygen Sensor - Downstream

Bosch OE Oxygen Sensor for Land Rover

Bosch 16256 is a narrow-band heated oxygen sensor built for downstream emissions monitoring and closed-loop fuel control. It is a specific-fit replacement for select Land Rover LR2 and Range Rover Evoque applications, with OE-style connector and harness details for direct replacement service.

Key Features

• Actual OE Oxygen Sensor from Bosch
• Narrow-band heated sensor design for stable air-fuel ratio feedback
• Specific fit with 4-wire harness and rectangular male connector
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Steel finish with metal housing for high-temperature service
• Wiring harness included for application-specific replacement
• Downstream position coverage for Land Rover LR2 and Range Rover Evoque

Product Details

Bosch 16256 uses a switching-type narrow-band design to send precise oxygen content data to the ECU, helping the engine maintain stable combustion control and emissions performance. Bosch developed this sensor family from its OE oxygen sensor engineering history, including planar narrowband designs that improve light-off speed, lambda accuracy, and closed-loop response. For drivers and technicians servicing a Land Rover LR2 or Range Rover Evoque, this Bosch Actual OE Oxygen Sensor provides the fit and electrical layout expected for downstream replacement work.

This part cross-references LR028931 for the same application. Bosch 16256 is a direct-fit option for 2013-2015 Land Rover LR2, downstream, and 2012-2013 Land Rover Range Rover Evoque, downstream.

What This Sensor Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio feedback to the ECU
• Slow or unstable closed-loop fuel control
• Emissions test failures tied to downstream sensor faults
• Rough combustion control caused by aging sensor response

Installation Notes

Confirm the downstream sensor location before ordering and match the connector, thread size, and harness length to the original unit. The sensor uses a threaded mount with an 18 mm thread diameter and a 22 mm hex size. Inspect the exhaust bung and wiring routing before installation, and verify the connector locks securely after installation.

Quality Assurance

Bosch supplies this oxygen sensor as an OE-developed replacement built to the same engineering standards used by vehicle manufacturers. The sensor uses advanced ceramic elements, controlled heating, and high-temperature-resistant materials for consistent operation under thermal and vibration load.