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HO SD40T-2 Locomotive, UP #2923

Item No.
Athearn - ATH73041
Pre-Order | Pre-Order
Brand Logo
5 out of 5 Customer Rating

HO SD40T-2 Locomotive, UP #2923

Item No.
Athearn - ATH73041
Product $179.99
Add Ons
Estimated Total: $179.99

HO SD40T-2 Locomotive, UP #2923

Item No.
Athearn - ATH73041
5 out of 5 Customer Rating
Product $179.99
Add Ons
Estimated Total: $179.99
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Product Details


  • 88” nose with brake wheel
  • Cab mounted A/C
  • Front ditch lights
  • Removed front and rear SP light package
  • Modified front L window
  • Standard range dynamic brakes
  • UP style front plow
  • M3 horn

After UP took over the SP in 1996, several older SP units were repainted into UP colors. While UP had many roster changes, it was common during this period for batches of locomotives to get renumbered. Our models depict the renumbered versions before they were retired.


  • Fine scale handrails
  • Photo-etched windshield wipers
  • Separately applied air tanks
  • LED Lighting
  • HTC truck sideframes
  • Welded ECAFB
  • All-wheel electrical pickup
  • See-through dynamic brake fans
  • Separately applied wire grab irons
  • Rubber trainline and MU hoses with silver ends
  • Standard Dash-2 cab, windows correct per prototype
  • See-through radiator grilles with new rear truck gearbox specific for the tunnel motor
  • Speed recorder attached to appropriate axle per prototype
  • McHenry® operating scale knuckle couplers
  • All-wheel drive with precision gears for smooth and quiet operation
  • 5-pole motor with flywheels and multi-link drivetrain for trouble-free operation
  • DCC Ready 21-pin NEM Quick Plug™ technology
  • Nickel plated, blackened machined wheels
  • Wheels with RP25 contours operate on all popular brands of track
  • Fully assembled and ready-to-run
  • Highly-detailed, injection molded body
  • Painted and printed for realistic decoration
  • Recommended radius: 22”


  • 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
  • Effect lighting (if applicable) using 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


The SD40T-2 is a 6-axle diesel-electric locomotive built by General Motors Electro-Motive Division having a 16-cylinder EMD 645E3 diesel engine producing 3,000 horsepower (2,240 kW). 312 SD40T-2s were built for North American railroads between April 1974 and July 1980. This locomotive and the SD45T-2 are popularly called tunnel motors, but EMD’s term is SD40-2s with “cooling system modifications” because they were designed for better engine cooling in tunnels. The difference between this locomotive and its non-tunnel motor cousin, the SD40-2, are the radiator intakes and radiator fan grills located at the rear of the locomotive. The radiator air intakes in this model were along the deck to allow more fresh, cooler air to enter and less hot exhaust fumes lingering around the tunnel’s ceiling.

Product Specifications

DCC Ready/21-Pin NEM
Axles 6
Scale HO
Lighting LED
Sound Ready
Reporting Mark UP
Era 1971-1990, 1991-2009
Prototype Manufacturer EMD