Designed for high-speed passenger service, the first 'E' series diesel was introduced by GM in 1937 and became one of the most popular passenger engines ever made. This EMD E7-A locomotive includes Bachmann's 'Sound Value' SoundTraxx® diesel package with prototypical prime mover, 3 air horns, and bell . . . all in polyphonic 16-bit sound. Features include precision motor with dual flywheels, die-cast frame, all-wheel drive, operating mars light (per prototype), illuminated number boards, soft-white LED headlight, RP25 wheel contours, and E-Z Mate® Mark II couplers. Bachmann no. 66605.