Product Specifications

I. Product Positioning

The 24V H5 (P45t) is a combined high/low beam halogen headlight specifically engineered for heavy commercial vehicles. Its unique P45t heavy-duty three-flange base and 24V voltage specification are designed to match the high-load electrical systems of trucks, buses, and other commercial vehicles. This bulb is developed with consideration for the demands of continuous operation, high-intensity vibration, and harsh environments typical in commercial vehicle applications.

II. Key Features

1. Heavy-Duty Construction

   • Reinforced P45t Base: Made from thickened metal material with more robust flange structure than passenger car standards, capable of withstanding mechanical stress from prolonged road vibration

   • Dual Anti-Vibration System: Filament features multi-point support and spring damping design to prevent damage from unpaved road conditions

   • Enhanced Heat Dissipation: Optimized bulb shape and gas mixture formula to withstand high-temperature engine compartment environments

2. Professional Optical Performance

   • Commercial Vehicle Specific Beam Pattern: Low-beam filament with precision shield creates cutoff line suitable for truck driving height, preventing glare to oncoming traffic

   • High-Beam Enhanced Design: High-beam filament position specially calculated to provide adequate range and width from truck's elevated mounting position

   • All-Weather Adaptability: Warm yellow light color provides good penetration in rainy or foggy conditions

3. Reliability Enhancements

   • Wide Voltage Tolerance: Designed to handle 22V-28V voltage fluctuations, accommodating diesel engine starting voltage variations

   • Corrosion Protection: Metal components feature nickel-plated anti-rust treatment for extended service life in damp, salty environments

   • Installation Stability: Three-flange base provides multiple fixing points, preventing poor contact from vehicle vibration

III. Vehicle Applications

• European Heavy Trucks:

  • Certain models of Mercedes Actros/Arocs series (2011-2018) main headlights

  • Some configuration versions of MAN TGX/TGS series (post-2010)

  • Standard lighting configuration models of DAF XF/CF series

• Engineering & Special Vehicles:

  • Auxiliary headlights on concrete pump trucks and mixers

  • Cab-mounted headlights on mining dump trucks

  • Reinforced headlight systems on terminal tractors

• Bus Applications:

  • High-beam auxiliary lights on 12m+ long-distance coaches

  • Partial lighting configurations on intercity tour buses

IV. Usage Considerations

• Voltage Confirmation: Must verify vehicle uses 24V system (common in 6-cylinder+ diesel engines)

• Base Identification: P45t base has three-flange structure, similar to P43t (H4) but with different flange angles - not interchangeable

• Seal Inspection: Ensure waterproof gasket is intact during replacement to prevent moisture ingress

• Beam Adjustment: Headlight aim should be adjusted after installation to ensure proper cutoff line position

V. Maintenance Recommendations

• Recommend replacing in pairs to maintain consistent color temperature and brightness

• Regularly inspect socket contacts to prevent oxidation-related poor connection

• Avoid corrosive cleaners when cleaning lenses to prevent accelerated aging