Image Item No. Description  x550b (Inv)  Electric, Motor 12V 12 x 4 x 3 1/3 with Three Side Holes (Train) Catalog: Parts: Electric, Motor  x469bb  Electric, Motor 4.5V Type C 12 x 4 x 3 1/3 Lower Housing (Train) Catalog: Parts: Electric, Motor  x469ba  Electric, Motor 4.5V Type C 12 x 4 x 3 1/3 Upper Housing (Train) Catalog: Parts: Electric, Motor  x469bc  Electric, Motor 4.5V/12V Type C 12 x 4 x 3 1/3 Gearbox (Train) Catalog: Parts: Electric, Motor