HO F3A/F3B Locomotive Set C&NW #4066-A and #4066-B (ATHG19571)

HO-scale CNW F3A and F3B locomotive set, a two-unit A-B freight power pair designed for authentic CNW operations on HO layouts. This pairing reproduces late-1940s diesel freight power, giving modelers a prototypical CNW freight locomotive to run with other CNW equipment on standard HO track.

Details include Phase II styling with as-built skirts and grab irons, see-through cab interiors, and a heavy die-cast frame for traction. The models feature DCC-ready Quick Plug technology with a 21-pin NEM connector, RP25 wheel contours, and body-mounted, scale-quality couplers compatible with Kadee. LED lighting, etched metal and injection-molded details, wire grab irons, and a detailed fuel system contribute to realism. Sound-equipped versions add a Tsunami2 decoder with dual speakers and operate on both DC and DCC, delivering engine, horn, and bell sounds with prototype-accurate lighting effects. Designed for 18" minimum radii (22" recommended), this CNW F3A/F3B set is built from prototype resources to deliver an accurate appearance and smooth operation on HO layouts.