Light bulb 1057 12 V/21 W BA15S (10-pack)

1057 12V/21W BA15S Bulb for Trailer Brake and Tail Lights

The 1057 bulb is an essential spare lamp for trailer lighting systems, providing reliable illumination for brake lights and tail lights. This single-filament bulb ensures your trailer is safely visible to other road users in all driving conditions, making it a critical component for trailer safety and roadworthiness compliance.

Spare lamp for trailer lights

This 10-pack of 1057 bulbs features BA15S single-contact bayonet sockets, rated at 12V with 21W output. Each bulb is designed for straightforward installation into standard trailer light fixtures, delivering consistent performance for both brake and tail light applications. The BA15S socket provides secure, quick mounting and reliable electrical contact for dependable trailer lighting operation.