The Early 911 & 912 LED Front Marker Light Bulb is an unusual size (BA9s).  Our replacement fits in the early housing with no modifications.  It is brighter and uses less power - only about 20% compared to the original bulb.  The yellow bulb is the right color whether you have a perfect or faded housing.  It even works with a clear housing. 
 
Comes as a pair of bulbs.