HO GP40-2 Locomotive SP #7617 (ATHG-1735)

HO-scale GP40-2 diesel locomotive in Southern Pacific markings, number 7617, faithfully recreates the as-delivered look from the early 1970s. This highly detailed model uses a Genesis driveline with a 5-pole skew-wound motor, precision flywheels, and a multi-link drivetrain to deliver smooth, quiet operation on HO tracks. It features a see-through cab with a full interior, fine-scale Celcon handrails, etched fan grilles, and a heavy die-cast frame for durability and traction. The SP-specific detailing for 7617 includes a cab roof bell, standard exhaust, and split battery box doors, with additional cues like lit number boards and class lights to reproduce the prototype silhouette. DCC-ready with a 21-pin NEM connector, and sound-equipped versions add onboard SoundTraxx Tsunami2 audio and dual cube speakers for richer sound.

Designed for HO layouts, this GP40-2 is suitable for mainline runs, yard work, and lash-ups with other units. It’s built for flexible operation, with Quick Plug plug-and-play DCC readiness and NMRA-compatible functions in DCC mode, while CV adjustments let hobbyists tailor performance and sound. The model uses RP25 wheel contours for compatibility with most track brands and features LED lighting, a heavy die-cast frame, and a reliable drivetrain for steady pulling power. SP 7617 detailing captures the as-delivered appearance, including the cab roof bell and split battery doors, and the finish is primed for grime weathering to recreate in-service wear. An 18-inch minimum radius keeps it practical for a wide range of HO layouts.