This is the insert for the Lucas ST51 "D Lamp" as used on the MG TB, TC, YA, YB, and numerous other British vehicles.
It provides functions for tail, brake, turn signal, and license plate lights.
If turn signal function is used, an external brake/turn signal relay is required. This is standard on most vehicles using this tail lamp.
The price is for a pair of lamp inserts sufficient for one vehicle.
This includes the insert only and does not include the housing or lens.
Brittrix LED Inserts