10 Pack - #431 Bulb for Lionel Trains, Bayonet Base 14 Volt - Clear They are used in a variety of Lionel, American Flyer and MTH engines, rolling stock and accessories including the Lionel 132 Passenger station, Lionel 315 trestle bridge, Lionel 356 operating freight station, Lionel 1121 O27 switches made 1949 on, Lionel 1121C O27 switch controller made 1950 on, all Lionel 2500 series aluminum passenger cars, and these Lionel illuminated cabooses 2357, 2457, 2757, 4357, 4457, 6357, 6427, 6457.