1157 - Trailer Light Incandescent Replacement Bulb

The 1157 Replacement Bulb is a dual-filament incandescent lamp commonly used in trailer tail lights, brake lights, turn signals, and marker lights. Its wedge-base design offers easy installation and reliable performance, delivering bright, consistent illumination to keep your trailer lighting system fully functional and DOT-compliant.

Features:

• Dual filament (brake/turn and tail/marker) in one bulb
• Standard W2.1×9.5d wedge base for plug-and-play replacement
• Clear glass envelope for optimal light output
• Compatible with 12V DC trailer lighting circuits
• Ideal for tail lights, stop lights, turn signals, and clearance/marker lights

Specifications:

• Part Number: 1157
• Type: Incandescent dual-filament bulb
• Voltage: 12V DC
• Wattage: 21W/5W (brake/turn / tail/marker)
• Base: W2.1×9.5d wedge
• Life Span: Approx. 1,000 hours under normal operation
• Color Temperature: ~2,700K (warm white)
• Application: Trailer tail, brake, turn, marker, and clearance lights

Fitment:

• Fits most 12V trailer light sockets requiring an 1157 bulb
• Direct replacement for OEM 1157 bulbs in taillight assemblies, turn signals, and marker lights
• Works in both incandescent and hybrid lighting fixtures