L539 Clear lens side light and indicator lamp, with double contact bulb holder equivalent to Lucas L539 type. Diameter 83 mm. Applications include Alvis (TD21) Austin, Bentley, Bristol, Cobra, MG, Riley, Rolls Royce, Rover and Vauxhall. Uses a BA15D bulb, for spare 5/21W twin filament bulbs please see our B383 (6v) or B381 (12v). For single filament double contact side lamp bulbs please see B206 (5W, 6V) and B209 (5W, 12V)