HO SD70ACe Locomotive Union Pacific #8478 (ATHG75549)

HO-scale Union Pacific SD70ACe locomotive in UP livery, number 8478, is a ready-to-run model that brings a modern freight locomotive to life on an HO layout. It faithfully reproduces the prototype’s powertrain and styling, including a 16-cylinder, 4300-horsepower diesel engine and the ACe’s approach of powering traction motors. The model uses a Genesis drivetrain for smooth, reliable pulling power, with LED headlights and lit number boards, plus fine details like see-through cab windows, a full cab interior, etched steps, lift rings, and细-scale handrails. UP-specific touches include PTC antennas, modern inverter cabinets, and front ditch lights, reflecting early production units and subsequent repaints. Built on a heavy die-cast frame for traction, it’s designed for HO layouts with an 18-inch minimum radius (22 inches recommended) and employs a 21-pin NEM DCC-ready interface for easy digital control, along with trainline and MU hoses for added realism.

Some SD70ACe UP models offer onboard DCC decoders with SoundTraxx Tsunami2 sound, delivering authentic engine, horn, and bell sounds through dual speakers and usable in both DC and DCC operation. The UP edition is fully assembled and ready to run, featuring a detailed fuel tank, walkways, windshield wipers, and wire grab irons that mirror the prototype’s build. It’s a versatile centerpiece for a modern UP roster, offering striking appearance, reliable performance, and the flexibility to handle mainline runs or yard work on an HO-scale layout.