Truck-Lite 80596 – H4 / 9003LL-HB2 Halogen Headlight Bulb (65 Watt, 12V, High/Low Beam Replacement for Dual Headlamp Systems)

Restore Crisp, Clear Forward Visibility to Your Fleet 

Maintain maximum nighttime safety and road clarity with the Truck-Lite 80596 H4 / 9003LL-HB2 Halogen Headlight Bulb. Engineered by Truck-Lite—a premier global manufacturer of commercial vehicle forward-lighting solutions—this high-performance replacement bulb is designed specifically to drop directly into standard dual headlamp systems. Operating on a 12V DC architecture, it delivers a powerful, concentrated beam that easily penetrates pitch-black highways and poor weather conditions.

Advanced Dual-Filament High/Low Beam Functionality 

The Truck-Lite 80596 features integrated dual-filament technology, acting seamlessly as both your vehicle’s low-beam and high-beam light source within a single, unified capsule. Drawing a steady 5.42 Amps at its high-beam threshold, this 65-watt bulb provides an optimal balance between exceptional lumen intensity and strict vehicle electrical safety, ensuring oncoming drivers aren't blinded while keeping your path perfectly lit.

Long-Life Engineering Built to Outlast the Competition 

Commercial trucks and heavy duty equipment face relentless road vibrations and extreme temperature swings that cause cheap bulbs to burn out prematurely. The 80596 is built as a Long-Life (LL) halogen capsule, structurally engineered to last up to 6 times longer than standard, off-the-shelf halogen options. Its compact, ultra-precise base configuration locks effortlessly into your lamp's internal socket housing for an airtight, vibration-resistant fit that dramatically minimizes fleet downtime.