HO SD40 Locomotive with DCC & Sound Kansas City Southern #636 (ATH87328)

Kansas City Southern HO SD40 Locomotive with DCC & Sound, #636, is an HO-scale diesel locomotive designed for realistic operation on model railroad layouts. This fully assembled, ready-to-run model captures late-era EMD styling with KCS-specific details—an 81-inch nose with rear porch mounted brake wheel, rock plows, a larger dynamic brake housing, and high-mounted truck brake cylinders—giving a distinctive KCS silhouette to any roster.

Inside, it features a modern DCC-compatible Tsunami2 sound system with dual cube speakers, bi-directional LED lighting, and a newly designed, quieter can motor for smooth operation. The sound-equipped version includes an onboard DCC/Sound decoder and operates on both DC and DCC, with NMRA-compatible functions and controllable horn, bell, and lights. The model also showcases fine-scale details such as see-through dynamic brake and cab windows, separately applied grab irons and air tanks, McHenry scale knuckle couplers (Kadee compatible), and RP25 wheels on Flexicoil-C trucks. It is DCC-ready with Quick Plug plug-and-play technology and includes a CV chart for easy configuration. Minimum radius is 18 inches, with 22 inches recommended for best performance. The SD40 derives from EMD’s 1966 catalog update featuring the 3,000-horsepower 645 engine, a widely deployed workhorse on North American railroads.