4x6 45W Truck High Low Beam LED Headlight
The SLL-5043 is a 4x6 inch flush-mounted LED headlight designed for trucks and heavy machinery that operate in extreme conditions. Nine 5W Bridgelux LEDs deliver 3300 effective lumens with a 6000K colour temperature, providing clear visibility in low light and high glare environments. The die-cast aluminium housing with UV-resistant polyester powder coating and polycarbonate lens ensures long-term durability under vibration, dust, and water exposure. The headlight operates across a 9–32V DC range, making it compatible with both 12V and 24V systems, and includes overvoltage and overheat protection for stable performance in demanding electrical environments.
- Flush mounting reduces frontal profile and improves aerodynamics on trucks and off-road vehicles
- 3300 effective lumens from nine 5W Bridgelux LEDs provide consistent visibility in low light and high glare conditions
- 6000K colour temperature delivers daylight-like illumination with minimal eye strain
- IP68 sealing and a durable polycarbonate lens resist water, dust, and impact in harsh outdoor environments
- 9–32V DC operation supports both 12V and 24V vehicle systems without requiring separate SKUs
Where This Lamp Is Used
- Front lighting on long-haul trucks operating in low visibility conditions during night shifts
- High and low beam lighting on off-road trucks and engineering vehicles used in mining and construction
- Primary headlight replacement on fleet vehicles where vibration and electrical instability are common
- Mounting on the front of utility trucks and service vehicles that operate in dusty or wet environments
- Integration into new vehicle builds where flush mounting is required for aerodynamic or aesthetic design
Who It Is For
- Fleet operators replacing halogen headlights with more reliable LED alternatives
- Machinery OEMs integrating a single headlight model across 12V and 24V vehicle platforms
- Distributors sourcing a durable, high-output headlight with flush mounting for truck and trailer applications
- 4x4 accessory brands developing a private label lighting range with consistent performance
- Equipment dealers fitting LED headlights on machines that must pass environmental and electrical checks
Problems It Solves
- Halogen headlights fail early under vibration and draw excessive current from vehicle alternators
- Non-flush headlights create aerodynamic drag and increase wind noise on long-haul trucks
- Inadequate sealing in cheap LED headlights allows water and dust ingress, leading to fogging and failure
- Narrow beam patterns or inconsistent light output reduce visibility in complex terrain or fog
- Voltage fluctuations in older vehicles damage unprotected LED drivers, leading to sudden failure
- Lack of overheat protection causes premature degradation in high ambient temperature environments
Technical Features
- Nine 5W Bridgelux LEDs with a total real power draw of 45W and a maximum rating of 45W
- 3300 effective lumens output with a 6000K colour temperature for daylight-like visibility
- Flood beam pattern with optional high and low beam switching for versatility in different conditions
- Die-cast aluminium housing with durable UV-resistant polyester powder coating for long-term protection
- Anti-impact polycarbonate lens with UV and scratch resistance for clear light transmission
- Flush mounting design with a compact 4x6 inch footprint suitable for tight front-end spaces
- Overvoltage and overheat protection circuits to prevent damage during electrical surges or prolonged operation
- Operating temperature range from -40 to +85 degrees Celsius, suitable for extreme climates
- 9–32V DC input range supports both 12V and 24V vehicle systems without requiring different part numbers
- IP68 sealing ensures full protection against water and dust ingress during washing or off-road use
Technical Specification
Values taken from the original factory specification for this model. Fields the factory sheet does not state are left out rather than estimated.
| Part Number | SLL-5043 |
|---|---|
| Max Power | 45W |
| Real Power | 45W |
| LED | 9 pcs x 5W Bridgelux |
| Beam Pattern | Flood, optional Hi/low beam |
| Colour Temperature | 6000K |
| Operating Voltage | 9–32V DC |
| Housing Material | Die-cast aluminium, UV-resistant polyester powder coating |
| Lens Material | Anti-impact polycarbonate |
| Mounting | Flush mount, 4x6 inch footprint |
| Waterproof Rating | IP68 |
| Operating Temperature | -40 to +85 degrees Celsius |
| Certification | CE, RoHS |
Materials Used
- Die-cast aluminium housing with UV-resistant polyester powder coating
- Anti-impact polycarbonate lens with UV and scratch resistance
- Silicone gasket and sealed cable entry for IP68 protection
- Internal circuit board with overvoltage and overheat protection components
- Bare wire lead of 40cm as standard with optional Deutsch connector
How This Lamp Is Built
Die casting of the aluminium housing and heat sink
Powder coating with UV-resistant polyester finish
LED board assembly with Bridgelux emitters and driver circuit
Lens bonding and gasket sealing for IP68 integrity
Quality Control on This Model
- Photometric output verified in an integrating sphere
- Sealing verified against the IP68 rating before shipment
- Vibration testing on a vibration test machine to simulate vehicle-mounted service
- Salt spray corrosion testing on housing coating and internal components
- High and low temperature alternating humidity testing across the -40 to +85 degrees Celsius range
Customisation Options
- Deutsch DT connector instead of the standard 40cm bare wire lead
- High beam only or low beam only configuration instead of dual beam
- Private label logo on the housing and printed carton
- Alternative cable length to match a specific vehicle harness
- Mixed cartons combining this headlight with other SUNLITEC models for trial orders
How It Compares With the Alternatives
| Halogen headlight of similar output | Draws 5A at 9V against roughly triple that for halogen and survives vibration that destroys filament-based bulbs |
|---|---|
| Round 4 inch headlight | The 4x6 inch flat profile fits flush mounting on modern truck fronts but requires a flat surface for installation |
| Spot beam version of the same lamp | Flood beam provides even illumination across the immediate road ahead while spot reaches further but leaves the near edges dark |
| Larger 6x8 inch headlight | Lower output but fits flush mounting on narrow front panels where a larger body would interfere with grille or bumper |
How to Fit and Use It
- Install on a flat surface using the flush mounting design and verify the 4x6 inch footprint matches the vehicle mounting area before drilling
- Leave a drip loop in the 40cm lead to ensure water runs away from the gland rather than into it
- Use high beam for long-distance visibility and low beam for close-range driving in traffic or fog
- Clean the polycarbonate lens with water and a soft cloth only, as solvents may degrade the anti-impact coating
Questions About This Model
Can I order a sample before placing a bulk order
Yes. Sample orders are welcome and mixed samples of different models in one shipment are accepted.
What is the lead time
Sample orders normally take around 3 to 7 working days. Bulk lead time depends on the model and the quantity ordered.
Do you have a minimum order quantity
There is an MOQ for standard orders, but smaller orders are also accepted, which suits distributors testing a new model.
How is the lamp shipped
Samples usually go by DHL, UPS, FedEx or TNT in around 4 to 7 days. Bulk orders ship by air in about 7 to 15 days or by sea in about 15 to 30 days.
Will this lamp work on both 12V and 24V machines
Yes. The operating range is 9 to 32V DC, so the same part number can be fitted to 12V and 24V vehicles.
Can you supply the lamp with our own brand
Yes. OEM and ODM service is available, including a private label logo on the housing and printed cartons.
Is it approved for road going machines
The lamp is CE and RoHS compliant and carries IP68 sealing, which supports use on public roads in regulated markets.
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