HO GEN 4-8-8-4 Big Boy Locomotive w/DCC and Sound UP #4019 (ATHG-2205)

HO-scale Genesis 4-8-8-4 Big Boy steam locomotive with DCC and sound in Union Pacific livery (UP 4019). This model recreates the iconic UP Big Boy with authentic sounds and precise, responsive performance for modern layouts.

Powered by an on-board DCC decoder with SoundTraxx Tsunami2 sound and dual speakers, the locomotive delivers engine, whistle, bell and other effects in both DC and DCC operation, with full NMRA-compatible CV control for fine-tuning. Lighting includes illuminated number boards and headlights, with the headlight turning off in reverse and a tender back-up light for realistic operation. The model features synchronized chuff, whistle, bell, blow-down, air compressor, dyno and valve sounds, plus detailed piping and gauges and an upgraded loco-to-tender harness for durability. Designed for smooth operation on 22-inch radius curves with current pickup on all wheels, it’s ready for weathering to achieve an in-service grime look. Road-number specific variations include UP 4019 with smoke lifters, coal burner and cooling pipes, offering a faithful, eye-catching centerpiece for any UP roster.