HO EMD F3B Locomotive SP 537 Black Widow with Paragon4 (BLI8180)

HO-scale EMD F3B locomotive in Southern Pacific SP 537 Black Widow livery, equipped with Paragon4 sound. This model faithfully reproduces the F3B’s role on layout—used for both freight and passenger service—with prototypically accurate road numbers and SP paint. It can be purchased as part of an A-B set with a powered A-unit (featuring Paragon4 Sound) and an unpowered B-unit, or as standalone A or B units with full Paragon4 DC/DCC/Sound for flexible lashups on a layout.

Road-specific detailing and lighting are built in, with features such as three pilot options, nose doors with and without headlights, multiple numberboard orientations, three horns, and hatch placements for water and sand. The model also includes a realistic filter panel, dynamic brake hatch, accurately modeled cooling fans and exhaust, winterization and steam generator styling, numerous grab irons and antennas in prototypical locations, and four MU door options on the front. When paired with Paragon4, the SP 537 Black Widow B-unit delivers authentic sound and lighting to enhance operations on a home or club layout.