Product Specifications

I. Product Positioning

The 24V H7 (PX26D) is a single-filament halogen lighting bulb specifically designed for heavy commercial vehicles, featuring the commercial vehicle-specific PX26D heavy-duty socket base. Primarily used as a low beam headlight, it is widely compatible with various independent low-beam lighting systems in trucks, buses, and engineering vehicles. Its 24V rating perfectly matches the electrical standards of diesel-powered commercial vehicles.

II. Key Features

1. Commercial Vehicle Specific Base Design

   • PX26D Heavy-Duty Socket: Features a dual-tab design with alignment grooves, more robust than passenger car H7 bases for secure connection

   • Anti-Vibration Locking Mechanism: Built-in spring lock tabs prevent loosening or disconnection during continuous rough road conditions

   • High-Current Contacts: Thickened silver-plated contacts handle higher current loads suitable for truck lighting systems

2. Optimized Optical Performance

   • Precision Beam Pattern Design: Filament position is precisely calculated to produce compliant light patterns even at commercial vehicle mounting heights

   • Enhanced Filament Structure: Reinforced filament supports ensure stable light output and extended lifespan

   • Heat-Resistant Glass: High-borosilicate glass withstands high-temperature engine compartment environments

3. Environmental Adaptability

   • Wide Voltage Operating Range: Stable operation within 22V-28V range, accommodating vehicle electrical fluctuations

   • Moisture and Dust Protection: Multi-layer sealing at connection points prevents water and dust ingress

   • Corrosion Resistance: All metal components receive anti-rust and anti-corrosion treatment

III. Vehicle Applications

• European Truck Brands:

  • Volvo FH/FM series (post-2012 models) low beam headlights

  • Standard low-beam configuration for Scania R/G series

  • Selected Iveco Stralis/New Stralis models

  • Renault T-series/C-series trucks

• Specialty Vehicles:

  • Auxiliary lighting systems for fire trucks and rescue vehicles

  • Work headlights for road sweepers and water trucks

  • Additional lighting units for freight trailers

• Bus Applications:

  • Low-beam lighting for intercity and long-distance coaches

  • Headlight systems for school buses and staff shuttles

  • Standard lighting configuration for airport shuttle buses

IV. Usage Considerations

• Correct Base Identification: PX26D base features dual tabs with alignment grooves; ensure proper orientation during installation

• Verify Voltage Compatibility: Only for use with 24V vehicle systems; confirm vehicle voltage before installation

• Note Installation Angle: Some vehicle models require specific mounting angles for the socket

• Check Sealing Components: Ensure waterproof gaskets are properly positioned during replacement

V. Maintenance Recommendations

• Regularly inspect socket contact condition

• Avoid touching glass surface when cleaning bulbs

• Promptly check and replace if light dims or flickers

• Recommended to check all vehicle lights before long-haul transport