Arnott RH-3878 Headlight Level Sensor - Rear Left
Reliable Headlight Level Sensor for Land Rover LR3 and Range Rover Sport
The Arnott RH-3878 headlight level sensor is designed to maintain optimal headlight alignment for your Land Rover LR3 or Range Rover Sport. This new sensor ensures accurate leveling to improve nighttime visibility and safety.
- Connector color: Black for easy identification
- Oval-shaped female connector with one connector quantity
- Three male pin terminals for secure electrical connection
- Standard grade type for consistent performance
- Mounting hardware included for straightforward installation
Detailed Product Description
The Arnott RH-3878 headlight level sensor features a black oval-shaped female connector with three male pin terminals, providing a reliable electrical interface. This sensor is manufactured to standard grade specifications, ensuring dependable operation in your Land Rover LR3 or Range Rover Sport. The part number RH-3878 corresponds to a new, high-quality sensor designed to replace faulty or worn headlight level sensors, helping maintain proper headlight beam height and alignment.
Common Applications and Issues Addressed
- Corrects headlight misalignment caused by sensor failure
- Prevents uneven headlight beam height during vehicle load changes
- Resolves dashboard warning lights related to headlight leveling
- Improves nighttime driving visibility and safety
- Ensures compliance with vehicle lighting regulations
Installation Notes and Tips
When installing the Arnott RH-3878 headlight level sensor, ensure the oval-shaped black connector is securely attached to the vehicle’s wiring harness. Verify that the three male pin terminals align properly with the female connector on the vehicle. Since mounting hardware is included, use the provided components to secure the sensor firmly in place. It is recommended to calibrate the headlight leveling system after installation to ensure accurate sensor performance.
Quality Assurance and Warranty
This Arnott headlight level sensor is a new replacement part built to meet OEM standards for fit and function. Arnott products undergo rigorous quality control to ensure durability and reliability. Please refer to Arnott’s warranty policy for specific coverage details on the RH-3878 sensor.





Description
Reliable Headlight Level Sensor for Land Rover LR3 and Range Rover Sport
The Arnott RH-3878 headlight level sensor is designed to maintain optimal headlight alignment for your Land Rover LR3 or Range Rover Sport. This new sensor ensures accurate leveling to improve nighttime visibility and safety.
- Connector color: Black for easy identification
- Oval-shaped female connector with one connector quantity
- Three male pin terminals for secure electrical connection
- Standard grade type for consistent performance
- Mounting hardware included for straightforward installation
Detailed Product Description
The Arnott RH-3878 headlight level sensor features a black oval-shaped female connector with three male pin terminals, providing a reliable electrical interface. This sensor is manufactured to standard grade specifications, ensuring dependable operation in your Land Rover LR3 or Range Rover Sport. The part number RH-3878 corresponds to a new, high-quality sensor designed to replace faulty or worn headlight level sensors, helping maintain proper headlight beam height and alignment.
Common Applications and Issues Addressed
- Corrects headlight misalignment caused by sensor failure
- Prevents uneven headlight beam height during vehicle load changes
- Resolves dashboard warning lights related to headlight leveling
- Improves nighttime driving visibility and safety
- Ensures compliance with vehicle lighting regulations
Installation Notes and Tips
When installing the Arnott RH-3878 headlight level sensor, ensure the oval-shaped black connector is securely attached to the vehicle’s wiring harness. Verify that the three male pin terminals align properly with the female connector on the vehicle. Since mounting hardware is included, use the provided components to secure the sensor firmly in place. It is recommended to calibrate the headlight leveling system after installation to ensure accurate sensor performance.
Quality Assurance and Warranty
This Arnott headlight level sensor is a new replacement part built to meet OEM standards for fit and function. Arnott products undergo rigorous quality control to ensure durability and reliability. Please refer to Arnott’s warranty policy for specific coverage details on the RH-3878 sensor.





















