{"product_id":"ho-gen-sd90mac-h-ph-i-locomotive-up-8508","title":"Athearn HO GEN SD90MAC-H PH I Locomotive, UP #8508","description":"\u003cp\u003eThe second group of Phase I SD90MACs ordered by the UP featured several minor design changes versus the first group, as EMD attempted to refine its product.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eATHEARN EMD SD90MAC-H DIESEL LOCOMOTIVE PROTOTYPE AND BACKGROUND INFO:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIntroduced in 1995, the EMD SD90MAC was intended to become that builder’s most-powerful single-engine diesel locomotive.The new locomotive was to use EMD’s newly-developed 265H prime mover, featuring 6000 horsepower. However, this engine was experiencing technical problems in development, which led to the first groups of locomotives being delivered with the EMD 710G prime mover of 4300 horsepower (the intent being to retrofit these with the more-powerful 265H at a later date). Ironically, the technical problems with the 265H were never fully resolved, and no conversions were done. The 710G-engined SD90MACs outlasted their later 265H cousins in service by a wide margin, with some units only recently having been retired or sold by Union Pacific, and other railroads choosing to rebuild them for continued service.\u003c\/p\u003e\u003cp\u003eThe Athearn Genesis SD90MAC features all of the cutting-edge detail and operational features that are expected by discerning modelers: Working number boards and ground lights, see-through steps, numerous separately applied details on the body and underframe, and a heavy die-cast frame for massive pulling power.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eLEGENDARY LIVERIES\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eWhat are Legendary Liveries? An Athearn exclusive, they are the ultimate answer to “What if?” Featuring some of the most popular railroad paint schemes of all time, these models are perfect for collecting, proto freelancing, or just plain fun! Whether company proposed paint schemes, canceled locomotive orders, or alternate takes on history, Legendary Liveries are fun and unique additions to any roster. Enjoy these items, and answer the ultimate railroad question of: “What if?”\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAthearn May \/ June 2025 Announcement: EMD SD90MAC-H Diesel Locomotive Video\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTrain Tuesday: 06\/17\/25 Athearn Genesis HO SD90MAC H Phase II \u0026amp; SD89MAC Locomotives Video\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eATHEARN EMD SD90MAC-H DIESEL LOCOMOTIVE FEATURES:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFlexible rubber trainline hose\u003c\/li\u003e\n\u003cli\u003eEtched see-through steps\u003c\/li\u003e\n\u003cli\u003eLit Number Boards \u0026amp; Truck Lights\u003c\/li\u003e\n\u003cli\u003eCoupler cut levers\u003c\/li\u003e\n\u003cli\u003eTrainline hose\u003c\/li\u003e\n\u003cli\u003eFull cab interior\u003c\/li\u003e\n\u003cli\u003eWindshield wipers\u003c\/li\u003e\n\u003cli\u003eCC-ready features Quick Plug™ plug-and-play technology with 21-pin NEM connector\u003c\/li\u003e\n\u003cli\u003eFine-scale Celcon handrails for scale appearance\u003c\/li\u003e\n\u003cli\u003eDetailed fuel tank with fuel fillers, fuel gauges, and breather pipes\u003c\/li\u003e\n\u003cli\u003eBody-mounted McHenry® operating scale knuckle couplers\u003c\/li\u003e\n\u003cli\u003eGenesis driveline with 5-pole skew wound motor, precision machined flywheels, and multi-link drivetrain for trouble free operation\u003c\/li\u003e\n\u003cli\u003eAll-wheel drive with precision gears for smooth and quiet operation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cul\u003e\n\u003cli\u003eFlexible rubber MU hoses\u003c\/li\u003e\n\u003cli\u003eLift rings\u003c\/li\u003e\n\u003cli\u003eSander lines\u003c\/li\u003e\n\u003cli\u003eSee-through cab window\u003c\/li\u003e\n\u003cli\u003eWalkway tread\u003c\/li\u003e\n\u003cli\u003eWire grab irons\u003c\/li\u003e\n\u003cli\u003eWheels with RP25 contours operate on all popular brands of track\u003c\/li\u003e\n\u003cli\u003eLED Lighting for realistic appearance\u003c\/li\u003e\n\u003cli\u003eHeavy die-cast frame for greater traction and more pulling powerEM\u003c\/li\u003e\n\u003cli\u003eScaled from prototype resources including drawings, field measurements, photographs, and more\u003c\/li\u003e\n\u003cli\u003eAccurately-painted and –printed paint schemes\u003c\/li\u003e\n\u003cli\u003eFully-assembled and ready-to-run\u003c\/li\u003e\n\u003cli\u003ePackaging securely holds the model for safe storage\u003c\/li\u003e\n\u003cli\u003eAll-wheel electrical pickup provides reliable current flow\u003c\/li\u003e\n\u003cli\u003eMinimum radius: 18” — Recommended radius: 22”\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSOUND-EQUIPPED MODELS ALSO FEATURE:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eOnboard DCC decoder with SoundTraxx Tsunami2 sound\u003c\/li\u003e\n\u003cli\u003eDual cube speakers for optimal sound quality\u003c\/li\u003e\n\u003cli\u003eSound units operate in both DC and DCC\u003c\/li\u003e\n\u003cli\u003eFull DCC functions available when operated in DCC mode\u003c\/li\u003e\n\u003cli\u003eMany functions can be altered via Configuration Value (CV) changes\u003c\/li\u003e\n\u003cli\u003eEngine, horn, and bell sounds work in DC\u003c\/li\u003e\n\u003c\/ul\u003e\u003cul\u003e\n\u003cli\u003eAll functions NMRA compatible in DCC mode\u003c\/li\u003e\n\u003cli\u003ePrecision slow speed contro\u003c\/li\u003e\n\u003cli\u003eProgram a multiple unit (MU) lashup with lead unit only horn, bell, and lights\u003c\/li\u003e\n\u003cli\u003eCV chart included in the box\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003ePRIMED FOR GRIME MODELS FEATURE:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDuplicated look and feel of “In Service” equipment\u003c\/li\u003e\n\u003cli\u003eFaded base colors matched to the prototype\u003c\/li\u003e\n\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePerfect starting point for adding grime and rust\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eUP FEATURES:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eEarly production Phase I\u003c\/li\u003e\n\u003cli\u003eRebuilt” body with revised hood doors and conductor’s side walkway details\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eUP FEATURES:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLate production Phase I\u003c\/li\u003e\n\u003cli\u003eAs-delivered details and paint\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eUP (89XX SERIES) FEATURES:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eRebuilt” body with revised hood doors and conductor’s side walkway details\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eEMDX FEATURES:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003e“Rebuilt” body with revised hood doors and conductor’s side walkway 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