BlueBird BLB1157 Dual-Filament Tail Light Bulb

The BlueBird BLB1157 is a dual-filament miniature bulb designed for tail light, brake light, and turn signal applications in Blue Bird buses and other commercial vehicles. This bulb features a BAY15D double-contact bayonet base with a 15mm diameter for secure, twist-to-lock installation.

Key Features:

• Dual-filament design provides two brightness levels for tail/brake or turn signal functions
• BAY15D double-contact index base for easy plug-and-play installation
• Standard 1157 configuration compatible with most automotive and commercial vehicle applications
• Suitable for tail lights, brake lights, backup lights, turn signals, and center high-mount stop lights
• Continuous coil filament resists shock and vibration for improved durability

This replacement bulb is commonly used in Blue Bird school buses and commercial vehicles, though it can be used in any application requiring a standard 1157-type bulb. Cross-reference numbers include 1034, 1157, 1178A, 2057, 2357, and 7528.