H4 LED Headlight Bulb (Pair) – LG5017
This is a direct, high-performance upgrade for any vehicle using standard H4 halogen bulbs. Our LG5017 H4 LED bulb pair delivers a massive increase in brightness, engineered into a simple plug-and-play design for a quick, effective replacement. It’s built to last, thanks to a sophisticated thermal management system that ensures consistent performance, shift after shift.
Upgrading your vehicle’s headlights from halogen shouldn't be a compromise. That’s why we engineered the LG5017. It’s not just about making them brighter—though with a 380% increase in light output over standard bulbs, the difference is night and day. It’s about creating a better, safer beam. The crisp, 6000 K daylight-white colour reduces eye strain on long journeys and makes it easier to spot hazards on the road ahead. With a powerful 1800 lumens on low beam and a formidable 2500 lumens on high beam, you get superior visibility where you need it most.
Heat is the enemy of any high-performance LED. It kills brightness and shortens lifespan. So, we've built a robust thermal management system to keep the LG5017 running cool and reliably. Heat is drawn from the chip via a pure copper plate—with thermal conductivity 60 times higher than ordinary aluminium—and transferred through a copper PCB. From there, an aluminium shell provides a large surface for heat dissipation, while a built-in, dual ball silent fan provides active and efficient cooling. It’s a complete system.
To protect this system, an intelligent temperature control IC constantly monitors the bulb’s working temperature and automatically adjusts power output to maintain optimal performance without overheating. This ensures a long, dependable service life. Installation is a straight swap for your old H4 bulbs. No cutting wires, no complex modifications. It’s a true Plug and Play design, built for 12 V vehicles and supplied as a matched pair for a perfectly balanced beam pattern.
Key Features
- Dramatic Brightness Increase: Engineered to be up to 380% brighter than standard H4 halogen bulbs.
- Dual Beam Functionality: Provides both a powerful low beam (1800 lm) and a long-reaching high beam (2500 lm) in a single unit.
- Crisp 6000 K Colour Temperature: A modern, daylight-white light that reduces driver fatigue and improves hazard perception.
- Advanced Thermal Management: A multi-stage system featuring a pure copper plate, copper PCB, and a dual-ball silent fan for superior heat dissipation and longevity.
- Intelligent Power Control: An integrated IC system actively manages power based on temperature, ensuring stable output and protecting the bulb from overheating.
- Plug and Play Installation: Designed as a direct, no-fuss replacement for standard H4 bulbs.
- Efficient Performance: Consumes less power (22 W low / 32 W high) than halogen bulbs, reducing the load on your vehicle’s alternator and electrical system.
- Engineered for 12 V Systems: Operates on a stable 9–16 V DC input, perfect for cars, vans, tractors, and light commercial vehicles.
- Supplied as a Pair: Ensures a perfectly matched and balanced beam pattern for safe, consistent road illumination.
Ideal Applications
- Trucks, HGVs, and commercial vans (12 V systems)
- Agricultural tractors and machinery (12 V systems)
- 4x4s and off-road vehicles requiring a road-legal H4 upgrade
- Cars and light commercial vehicles using H4 halogen bulbs
Why Choose LED-Global Lighting
We build lighting for professionals. Every product we design is engineered to solve a problem—to deliver more light, more reliability, and more safety in demanding environments. Our focus on European engineering standards and real-world testing ensures our products don’t just meet specifications; they deliver proven performance you can depend on, season after season.
LED Bulb Details
| Description | Details |
|---|---|
| Model | LG5017 |
| Bulb Type | H4 |
| Voltage | 9–16 V DC |
| Brightness | Increased by 380% |
| Power | Low Beam 22 W / High Beam 32 W |
| Lumens | Low Beam 1800 lm ±10% / High Beam 2500 lm ±10% |
| Colour Temperature | 6000 K |
| Cooling | Built-in cooler fan |
| PCB | Copper PCB with fast heat conduction |
| Installation | Plug and Play |
| Pack Contents | Sold as a pair |
Features
| Description | Details |
|---|---|
| Aluminum Shell | Efficient heat dissipation design transfers chip heat quickly to extend lamp life. |
| Pure Copper Plate | Thermal conductivity 60× higher than ordinary aluminum; fan rapidly reduces temperature. |
| Dual Ball Silent Fan | Ultra-speed, low-noise fan for active and efficient cooling. |
| Intelligent Temperature Control | IC system automatically adjusts power based on working temperature. |
What’s Included
| Description | Details |
|---|---|
| Included in the kit | 1 × pair of H4 LED bulbs (LG5017) |



