HO EMD SD40-2 Locomotive Missouri Pacific #3139 (ATH-1241)

Missouri Pacific HO-scale EMD SD40-2 locomotive, road number 3139, is a ready-to-run model designed to bring the Dash 2 era's freight power to a model railroad. This faithful reproduction captures the SD40-2’s rugged profile and period detailing, and it arrives fully assembled, ready to operate on standard HO track.

Built for lifelike operation, the model features a heavy die-cast frame and a 5-pole motor with flywheels, along with all-wheel drive for smooth, quiet pulling. Fine-scale details include see-through cab windows, fuel tanks, etched windshield wipers, and scale handrails, plus flexible MU hoses and McHenry knuckle couplers for prototypical coupling. Lighting is realistic with LED headlights and, where applicable, ditch lights and beacons; sound-equipped versions add a DCC decoder with SoundTraxx Econami and a single speaker that runs on both DC and DCC, while non-sound versions stay DC or DCC-ready via a 21-pin NEM plug. The model is designed for HO layouts with a minimum 18-inch radius (22 inches recommended) and uses RP25 wheel contours for compatibility with popular HO track brands.