Discontinued | This Item is No Longer Available
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4.6 out of 5 Customer Rating

HO RTR SD40u, SF #5013

Item No.
Athearn - ATH72050
Discontinued | This Item is No Longer Available
Brand Logo
4.6 out of 5 Customer Rating

HO RTR SD40u, SF #5013

Item No.
Athearn - ATH72050
Selected Store

Product Details


  • Nose headlights
  • Relocated horn
  • Cab mounted Prime A/C
  • Santa Fe style roof mounted antennas and stands
  • Low mounted truck brake cylinders


  • Removed front plow. Nose Headlight. Roof mounted A/C and antenna stands. Long hood mounted horn.

    • LED lighting
    • Photo-etched stainless steel windshield wipers
    • Fully assembled and ready-to-run
    • Separately applied wire grab irons
    • Separately applied air tanks
    • Coupler cut levers
    • Rubber MU hoses
    • Fine scale handrails molded in engineering plastic
    • Non-sound version features 21-pin NEM DCC plug
    • See-through dynamic brake and radiator fans
    • Curved radiator fan grab iron
    • Exhaust stack
    • Frame mounted bell (unless noted)
    • Detailed 4000 gallon fuel tank (unless different capacity is noted)
    • Flexicoil-C trucks with high or low brake cylinders (per prototype)
    • McHenry scale knuckle spring couplers
    • Highly-detailed, injection molded body featuring new tooling
    • Painted and printed for realistic decoration
    • See through cab windows
    • Bi-directional LED lighting
    • All-wheel drive with precision gears for smooth and quiet operation
    • All-wheel electrical pickup
    • 5-pole motor with flywheels and multi-link drivetrain for trouble-free operation
    • Wheels with RP25 contours operate on all popular brands of track
    • Window packaging for easy viewing
    • Interior plastic blister safely holds the model for convenient storage
    • Minimum radius: 18”
    • Recommended radius: 22”


    • Onnboard Econami sound decoder by Soundtraxx
    • Sound units operate in both DC and DCC
    • Engine startup sound sequence
    • All functions NMRA compatible in DCC mode
    • Dynamic brake sound or Non-Dynamic Straight to idle on F4
    • Some functions are limited in DC
    • Extra prime mover and horn sounds exclusive to Athearn version
    • Slow speed control
    • Multiple bell sound files user configurable via Configuration Value (CV)
    • CV chart included in the box
    • 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
    • CV chart included in the box
    • Current Keeper ready with on board expansion plug
    • 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 CV changes


    In 1966, EMD updated its locomotive catalog with entirely new models, all powered by the new 645 diesel engine. The SD40 had 3,000 hp from a turbocharged V16. 856 examples of this locomotive model were built for American railroads, 330 were built for Canadian railroads, and 72 were built for Mexican railroads.

    This page is based on the copyrighted Wikipedia article “EMD SD40”; it is used under the Creative Commons Attribution-ShareAlike 3.0 Unported License (CC-BY-SA). You may redistribute it, verbatim or modified, providing that you comply with the terms of the CC-BY-SA.

    Product Specifications

    Reporting Mark ATSF
    Sub Brand ATHEARN
    Era 1941-1970, 1971-1990
    Prototype Manufacturer Electro Motive Division
    DCC DCC Ready 21-Pin Harness
    Axles 6
    Lighting LED
    Sound Ready
    Scale N