BlueBird BLB4114LL Long Life Daytime Running Light Bulb

The BlueBird BLB4114LL is a long-life miniature bulb designed for automotive daytime running light applications. This incandescent bulb provides reliable illumination for DRLs, ensuring your vehicle remains visible to other drivers during daylight hours, cloudy conditions, and low-light environments.

Key Features:

• 4114 bulb type with extended long-life design for reduced maintenance
• Dual-filament configuration with 31.2W/8.3W wattage ratings
• 402 lumens output for optimal daytime visibility
• 12.8V DC operation compatible with standard automotive electrical systems
• 4000-hour average rated lifespan for the high-power filament
• DOT approved for street-legal use
• W2.5x16q base type for easy installation
• Clear glass construction with C-6 filament type

The 4114LL bulb is interchangeable with other bulbs in the 3057, 3157, and 4157 family, making it a versatile replacement option. The long-life designation indicates enhanced durability compared to standard automotive bulbs, with construction designed to withstand road shock, vibration, and temperature extremes. Ideal for vehicles requiring extended bulb operation such as daytime running lights on trucks, SUVs, and commercial vehicles including Blue Bird school buses.

Installation Note: Always replace bulbs in pairs to ensure equal brightness and color. Avoid touching the glass bulb during installation—use gloves or a clean cloth to prevent oil transfer that can reduce bulb life.