The BMW E39 5 series Light Intensity Regulator Button Dimmer Switch Adjuster 8360461 is an original BMW item, specifically designed to control the headlight intensity on the vehicle. Made in Germany, this roller type switch is located on the dash of the car and is easily adjustable to control the brightness of the headlights. Additionally, it has other part numbers like 61 31 8360461 and interchange part numbers such as 61.31-8360461, 61.31 8360461, and 61 31-8360461, making it compatible with various BMW models. This high-quality switch is a genuine part that ensures optimal performance and functionality for your vehicle.