Headlight
A headlight for a truck or heavy goods vehicle must meet strict technical and regulatory requirements before it can be used on public roads. In the truck and trailer industry, ECE regulations serve as the governing standards for vehicle lighting approval. ECE R112 specifically applies to headlights with asymmetric low beam, defining how the light beam must be shaped and cut off to prevent glare for oncoming traffic while providing effective road illumination. All headlights in this range are constructed and approved in accordance with ECE regulations, making them directly applicable in vehicles operating on European public roads.
Within this product type, different lamp bases each bring their own electrical and optical characteristics. The H4 headlight combines low beam and high beam in a single lamp through two filaments, rated at 55W for low beam and 60W for high beam. This makes the H4 headlight 24V well suited for trucks where both functions are controlled through a single lamp holder. The three-pin connector of the H4 provides a reliable connection in the vehicle wiring and fits directly into existing headlight housings without modifications. The H7 fitting operates with a single filament at 55W for 12V or 70W for 24V and is widely used in modern vehicles for either low beam or high beam, depending on the configuration of the headlight housing. The standardised PX26d base of the H7 is internationally normalised and compatible with a broad range of housings in heavy transport. The H3 lamp with PK22s base is specifically aimed at 24V vehicle systems with a rated power of 70W, delivering a powerful light output that meets the requirements for motorway and rural road driving.
Alongside conventional halogen versions, this range also includes LED headlights for HGV applications in H1, H3, H4 and H7 bases, all compatible with both 12V and 24V electrical systems. The LED headlight HGV replaces the halogen lamp directly in the existing lamp holder, with no changes required to the wiring or the reflector. LED technology is characterised by significantly lower power consumption compared to halogen, reducing the load on the truck's electrical system. In addition, LED provides a longer operational service life, reducing the frequency of replacement and the associated vehicle downtime. This is a relevant consideration for transport companies with their own workshop facilities and for truck workshops looking to streamline maintenance operations.
Hella is represented in this range with complete headlight units engineered as OEM replacements. The Hella truck front lamp is constructed as a full unit with an integrated reflector and housing, meeting the applicable ECE directives for vehicle lighting. Hella is a European Tier-1 supplier with a long history in vehicle lighting, known for precise dimensional tolerances and robust construction. The specific left and right versions of the 996 series are intended for vehicles for which this Hella type is specified, providing a direct replacement without modifications to the mounting points or the wiring diagram.
For trailer builders, body builders and truck body manufacturers, the availability of both 12V and 24V versions is essential, as new build and refurbishment projects involve a range of electrical system voltages. An LED headlight HGV in 24V specification connects directly to the electrical system of a standard European truck, while 12V variants are used on lighter trailers or vehicles with a 12V installation. Selecting the correct voltage and lamp base is decisive for the optical performance and the service life of the lamp within the housing. In the day-to-day workshop practice of garages and trailer builders, having access to a complete headlight range, from halogen to LED and from H4 headlight 24V to H7, is a prerequisite for working efficiently and avoiding unnecessary delays during repair or new build work on heavy transport vehicles.