HO GEN GP39-2 Phase I Locomotive Union Pacific #2736 (ATHG-1970)

HO-scale GP39-2 Diesel Locomotive in Union Pacific livery, road number 2736. This Phase I GP39-2 model from Athearn reproduces the mid-1970s workhorse with an authentic silhouette and prototype-grade detailing, designed for HO-scale railroading. It’s a ready-to-run locomotive that brings period-accurate styling and dependable performance to any layout.

Under the hood, the GP39-2 uses a Genesis driveline with a five-pole motor, precision flywheels, and a multi-link drivetrain inside a heavy die-cast frame for strong pulling power and quiet operation. LED lighting, see-through cab windows, a detailed interior, etched fan grills, and Celcon handrails bolster realism, while body-mounted McHenry knuckle couplers keep things prototypical on standard track. The model is DCC-ready with Quick Plug plug-and-play 21-pin NEM connectivity, and supports DC or DCC operation. Union Pacific-specific detailing includes a newly tooled walkway and fuel tank, front tall ditch lights, a small EMD plow, the early Phase I body, Nathan 5-chime horn, and a large Sinclair antenna. Some variants are available with onboard Tsunami2 sound and dual speakers, with full NMRA-compatible functions; a CV chart is included to tailor performance. The locomotive is designed for operation on an 18-inch minimum radius, allowing smooth running on many hobbyist layouts.