Athearn ATHG27256 G2 SD90MAC Union Pacific #3681 Locomotive HO Scale

UP FEATURES: 
As renumbered to 3470-3775 in 2012
3681 as repainted with flag, June 2015
EOTD holder between starter capacitor box and fuel gauge
Front only ditch lights mounted on pilot face
Both Cab door options, with and without window
Union Pacific specific cab antennas
Union Pacific was the largest buyer of the SD90MAC with 309 units total; the railroad designation was SD9043AC as they were delivered with the 710G engine rated at 4300hp. Taking delivery of the first locomotives in 1995 and the last in 1999; originally numbered in the 8000 series, these locomotives were renumbered in 2012 and some are still in service today. 3681 is one of only a few SD90MACs to receive the flag paint scheme. 

SD90MAC SERIES LOCOMOTIVE FEATURES: 
Brand new model previously only available in brass
Fully-assembled and ready-to-run
DCC-ready features Quick Plug™ plug-and-play technology with 21-pin NEM connector
Accurately-painted and –printed paint schemes
Scaled from prototype resources including drawings, photographs, and more
Coupler cut levers
Rubber MU hoses
Trainline hose
See through cab windows
Full cab interior
Walkway tread
Windshield wipers
Lift rings
Wire grab irons
Sander lines
Fine-scale Celcon handrails for scale appearance
Detailed fuel tank with fuel fillers, fuel gauges, & breather pipes
McHenry® scale knuckle couplers - Kadee® compatible
Genesis driveline with 5-pole skew wound motor, and precision machined flywheels
All-wheel drive with precision gears for smooth & quiet operation
All-wheel electrical pickup provides reliable current flow
Wheels with RP25 contours operate on all popular brands of track
LED Lighting for realistic appearance
Heavy die-cast frame for greater traction and more pulling power
Packaging securely holds for the model for safe storage
GENESIS 2.0 FEATURES: 
By integrating and pioneering some of the latest model advancements in the industry, Athearn is redefining model fidelity with Genesis 2.0
Etched, see-through walkway steps
Illuminated number boards
Illuminated ground lights
DCC+Sound models feature dual Sugarcube speakers for optimal sound quality
SOUND EQUPPED MODELS ALSO FEATURE
Onboard DCC decoder with SoundTraxx Tsunami2 sound
Dual cube speakers for optimal sound quality
Sound units operate in both DC and DCC
Full DCC functions available when operated in DCC mode 
Engine, horn, and bell sounds work in DC
All functions NMRA compatible in DCC mode
Precision slow speed control
Program a multiple unit (MU) lashup with lead unit only horn, bell, and lights
Many functions can be altered via Configuration Value (CV) changes
CV chart included in the box
PROTOTYPE SPECIFIC INFORMATION
Introduced 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.

The Athearn Genesis 2.0 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.

Specifications
DCC: Ready/21-Pin NEM
SOUND: Ready
PROTOTYPE MANUFACTURER: EMD
Axles: 6
LIGHTED: LED Lighting
Minimum Age Recommendation: 14 years
Is Assembly Required: No