Athearn Genesis 78268 GTW GP9 DCC/Sound #4432 HO

Athearn Genesis

MSRP: $299.98
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3.00 LBS
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Detailed Information


  • Dual service units
  • Steam Generator
  • roof mounted “Torpedo Tube” air tanks
  • Cut side skirts
  • Split water and diesel fuel tank
  • “Wagon wheel” style antenna stand
  • Nathan 5-Chime air horn
  • Front and rear gyra light; (effect on DCC+Sound version only)


  • A number of GP9s escaped SP’s GRIP program. A few of them soldiered on well into the 1980s “as-built” later being renumbered into switchers. Most notable, SP #3663 and #3703 lasted nearly 20 years in scarlet and grey without ever being rebuilt.
  • SP style numberboard access doors front and rear
  • Conventional frame mounted air tanks
  • Cut side skirts
  • 2600 gallon diesel fuel tank
  • Whip style antenna
  • Nathan P3 air horn
  • Front gyra light; 


  • Maple Leaf scheme
  • “Barrel” style spark arrestors where appropriate
  • Ratchet style brake stand
  • Horns and bells mounted on long hood end per prototype
  • Canadian style handrails
  • Model set up for long hood forward operation per prototype.
  • Alternate lowered drop step included


  • “Barrell” style spark arrestors
  • Equipped with Dynamic Brakes
  • Bells mounted on long hood end per prototype
  • Model set up for long hood forward operation per prototype.
  • Maple Leaf scheme
  • Canadian style handrails
  • Alternate lowered drop step included


  • Phase II body w/dynamic brakes
  • Snowplow, both ends
  • Firecracker antenna
  • Bell mounted long hood end
  • Great Northern specific toolbox side skirts – early version
  • Spark arrestor style tall exhaust stack
  • All weather cab window – included not applied
  • Alternate lowered drop step included


  • Passenger service
  • Phase Ia
  • Footboards with slotted steps
  • “Pipe” handrail stanchions
  • Inward railing bend at ends
  • Front as-built Pyle-National “barrel” headlights
  • Forward radiator intake grilles include striping trim
  • Steam generator intake
  • “Peacock” hand brake stand with brake wheel
  • Rooftop mounted air tanks with cooling coil and piping
  • Canadian-style winterization hatch
  • CP passenger skirts with slots
  • Four hose M.U. clusters with silver glad-hands
  • Early coupler cut levers
  • Drop step mounted in the vertical position
  • Dual early M.U. stand with M.U. and field loop connections
  • Slotted cab steps
  • Standard battery box doors
  • Raised seam and rectangular vent on right side of nose
  • Separately applied windshield wipers
  • See through cab windows
  • Early short hood forward cab interior
  • Cab side panel with gutter
  • Mirrors/wind deflectors mounted fore of cab side windows
  • Nathan K-3 air horn
  • Large Sinclair antenna
  • 1200+1200 gallon fuel tank

#8506 & 8512: 

  • Later scheme with script lettering

#8487 & 8495: 

  • Earlier scheme with block lettering. No steam generator. Standard air tanks & skirts.


  • Trainline and MU hoses
  • Coupler cut levers
  • Drop steps unless noted
  • MU stands
  • “Nub” style walkway tread
  • Bell placement & type per prototype
  • Wire grab irons
  • Lift rings
  • Windshield wipers
  • Sander lines
  • Fine-scale handrails for scale appearance
  • See through cab windows and full cab interior
  • Etched metal radiator intake grilles and fan grilles
  • Air tanks mounted below sill unless noted
  • Detailed fuel tank with fuel fillers, fuel gauges, breather pipes, and retention tanks
  • Blomberg-B trucks with appropriate bearing caps
  • Speed recorder unless noted
  • Fully-assembled and ready-to-run
  • DCC-ready features Quick Plug™ plug-and-play technology with 21-pin NEM connector
  • Scaled from prototype resources including drawings, field measurements, photographs, and more
  • Accurately-painted and printed paint schemes
  • Body mounted McHenry operating scale knuckle couplers
  • Genesis driveline with 5-pole skew wound motor, precision machined flywheels, and multi-link drivetrain for trouble free operation
  • All-wheel drive with precision gears for smooth and quiet operation
  • All-wheel electrical pickup provides reliable current flow
  • Wheels with RP25 contours operate on all popular brands of track
  • Bidirectional constant LED lighting so headlight brightness remains constant
  • Heavy die-cast frame for greater traction and more pulling power
  • Packaging securely holds the model for safe storage
  • Replacement parts available
  • Minimum radius: 18”


  • Onboard DCC decoder with SoundTraxx Tsunami2 sound
  • 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
  • Excellent Slow speed control
  • Operating lighting functions with F5 and/or F6 
  • 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 1949, EMD introduced the GP7. The basic design followed most diesel switchers with the addition of a short hood instead of an end-cab. The hoods were also full height to better accommodate the diesel engine and mechanical and electrical components.

In 1954 EMD upgraded the GP7 to become the 1,750 horsepower GP9. Externally, the first GP9s were virtually unchanged from the last GP7s. Later versions would include different louver arrangements and the last ones would come without the frame skirting. The GP9 was available with all of the fuel tank, steam generator, and dynamic brake options as the GP7, including “torpedo tube” air tanks mounted on the roof. 

Many railroads chose to rebuild their GP7s and GP9s for continued service. Often times, it was cheaper to do this rather than purchasing brand-new locomotives.


DCC: Equipped
SOUND: Tsunami2
Axles: 4
Minimum Age Recommendation: 14 years
Is Assembly Required: No