HO GEN SD90MAC Locomotive Union Pacific #3678 (ATHG-1914)

HO-scale Genesis EMD SD90MAC Union Pacific locomotive, UP #3678, is a high-detail, ready-to-run model for HO-layout enthusiasts who want an authentic representation of a modern UP diesel. Built on a heavy die-cast frame for strength and traction, it features LED lighting, a full cab interior, etched see-through steps, and other prototype-inspired touches that bring the locomotive to life on a model railroad or display shelf.

Designed for easy operation on digital layouts, the model is DCC-ready with Quick Plug plug-and-play technology (21-pin NEM connector) and all-wheel drive for smooth, quiet running. Road-number specific variations mirror prototype UP units, including nose-door options (with or without windows) and patches, while lit number boards, truck lights, walkways and scale handrails enhance realism. The model is ready to run straight from the box, with an 18" minimum radius (22" is recommended), and variants with onboard SoundTraxx Tsunami2 sound are available for added engine and horn realism.