BlueBird BLB2057 Turn Signal Bulb Replacement

The BlueBird BLB2057 is a dual-filament miniature turn signal bulb designed for use in BlueBird school buses and other commercial vehicles. This S8-style bulb features a BAY15D double contact indexing bayonet base that ensures proper orientation and secure installation.

Key Specifications:

• Dual-filament design for turn signal and running light applications
• Voltage rating: 12.8V/14V for reliable performance in automotive electrical systems
• Wattage: 27W/6.7W dual-intensity output
• S8 bulb configuration with double contact bayonet (BAY15D) base
• Compact dimensions: approximately 2.0 inches in length x 1.04 inches in diameter
• Standard 2057-type bulb cross-reference compatible

This replacement bulb is commonly used in turn signal, brake light, and tail light assemblies on BlueBird Vision, All American, and other school bus models. The dual-contact indexing base design ensures proper electrical connection and prevents incorrect installation. Built to withstand the vibrations and electrical fluctuations common in commercial vehicle environments, this bulb provides reliable performance for critical safety lighting applications.