The HELLA 1A3996002191 is a genuine H4 halogen main headlamp designed for robust performance in various applications, including agricultural and construction machinery. This ECE-approved headlight operates on both 12V and 24V electrical systems, providing versatile compatibility. It features a clear lens and delivers both main and dipped beam functions without an integrated city light (position light). With a diameter of 167mm and a depth of 100mm, it offers reliable illumination and is a direct replacement for many standard H4 headlamp units.