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Arnott RH-3878 Headlight Level Sensor - Rear Left
| Brand | Arnott RH-3878 |
|---|---|
| Position | Rear Left |
| Connector Color | Black |
| Terminal Type | Pin |
| Grade Type | Standard |
| Connector Quantity | 1 |
| Connector Shape | Oval |
| Terminal Quantity | 3 |
| Connector Gender | Female |
| Terminal Gender | Male |
| Mounting Hardware Included | Yes |
| New Or Remanufactured | New |
| Fits | Land Rover · 9 vehicles |
OE-style replacement. New sensor built for standard, direct-fit service.
Ride height sensing. Measures chassis distance to help maintain proper leveling.
Mounting hardware included. Ready for a straightforward installation.
Cross-references URO LR020159, RQH500051 and RQH500052 for the same application. See all 4.
Arnott RH-3878 Headlight Level Sensor
Arnott RH-3878 is a new headlight level sensor for vehicles with air suspension height control. It measures chassis-to-road distance and sends that input to the ECU so the system can adjust air pressure in the struts and maintain proper ride height. This replacement is built for 2005-2009 Land Rover LR3 rear left and 2006-2009 Land Rover Range Rover Sport rear left applications.
Key Features
- New aftermarket ride height sensor for air suspension systems
- Black connector with oval shape, 1 connector, 3 terminals
- Female connector and male terminals for direct electrical connection
- Standard grade construction for replacement service
- Mounting hardware included
- Cross-references URO LR020159 for the same application
How It Works
The Arnott RH-3878 monitors suspension position and relays height information to the vehicle control system. On 2005-2009 Land Rover LR3 and 2006-2009 Land Rover Range Rover Sport models, that signal helps the ECU command the compressor and air struts to raise or lower the vehicle as needed. This makes RH-3878 a direct-fit solution for rear left ride height sensor replacement on Land Rover LR3 and Range Rover Sport air suspension systems.
Common Problems This Part Can Address
- Suspension height readings that are inaccurate or inconsistent
- Air suspension warning messages related to ride height sensing
- Uneven vehicle stance at the rear left corner
- Compressor cycling caused by faulty height feedback
- Sensor damage from road debris, water, salt, or impact
Installation Notes
Fits 2005-2009 Land Rover LR3, rear left. Fits 2006-2009 Land Rover Range Rover Sport, rear left. Confirm connector style, mounting points, and rear left location before installation. Inspect the linkage and surrounding suspension components for wear or corrosion, since a damaged sensor arm or bracket can affect system readings. RH-3878 is a direct replacement for the listed applications and uses a 3-terminal, female oval connector.
Quality Assurance
Arnott supplies aftermarket suspension components for air-suspension service, and RH-3878 is supplied new for replacement use. The part number RH-3878 is engineered for the listed Land Rover applications and cross-references OE-style part numbers used on the same fitment.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2009 | Land Rover | LR3 | Rear Left | — |
| 2009 | Land Rover | Range Rover Sport | Rear Left | — |
| 2008 | Land Rover | LR3 | Rear Left | — |
| 2008 | Land Rover | Range Rover Sport | Rear Left | — |
| 2007 | Land Rover | LR3 | Rear Left | — |
| 2007 | Land Rover | Range Rover Sport | Rear Left | — |
| 2006 | Land Rover | LR3 | Rear Left | — |
| 2006 | Land Rover | Range Rover Sport | Rear Left | — |
| 2005 | Land Rover | LR3 | Rear Left | — |
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