223 Twin Filament Bulb Holder for Front Indicators.
If your Side Lights have survived from the 1930's, then you will find on dismantling them that they are single filament Bulb Holders which is fine if you don't intend to have any flashing direction indication to the front of the car. These inners are immediately interchangeable with your originals and will give you white flashing Indicators at the front of your car.
Please note; if you are purchasing complete Side Lights (our item 155) then these internals will already be fitted and you do not need to buy them separately