HO GEN 4-8-8-4 Big Boy Locomotive UP #4024 (ATHG-2199)

HO-scale Genesis 4-8-8-4 Big Boy locomotive in Union Pacific UP #4024 brings the power and presence of the iconic 4-8-8-4 class to modern model railroading. This Legendary Liveries Greyhound scheme with yellow trim gives the roster a striking, historically evocative look. The model features illuminated number boards and headlights, with the headlight turning off in reverse, plus a tender back-up light for authentic night-time operation. Realistic boiler details include a detailed backhead with printed gauges and individually applied parts such as a brass-painted bell, piping, valves, and steps, while pivoting front and rear engines help it negotiate 22" radius curves. Current pickup on all wheels and a front coupler pocket for an operating coupler add to its operational versatility on larger layouts.

Inside, an on-board DCC decoder with SoundTraxx Tsunami2 sound delivers synchronized chuff, whistle, bell, blow-down, air compressor, dyno and pop-off valve effects through dual speakers for rich, room-filling audio. The model runs in both DC and DCC with full NMRA CV compatibility, and a CV chart is included for fine-tuning performance. Road-number specific features for UP #4024 highlight the Legendary Liveries Greyhound scheme with smoke lifters, oil burner, and no cooling pipes, enhancing authenticity. Designed for reliable operation on HO layouts, it also arrives primed for grime to provide a natural starting point for weathering that captures years of service on the rails.