Athearn ATHG74523 HO MP15AC, UPY #1397

AthearnSKU: ATHG74523


Detailed Information


  • Operating Prime Stratolight Beacon (#s 434 and 442 only)
  • 1100 gallon fuel tank
  • "Weed Cutter" plow
  • Leslie RS3L horn on cab face bracket
  • Prime Electronic bell w/ authentic sound (Sound-equipped models only)

MILW ordered two groups of MP15ACs for switching, transfer, and secondary service. The lower numbered units, MILW 434-465, were actually delivered in 1976 (a few months after the first order). 



  • MU hose holders on each end
  • Operating front and rear ditch lights
  • Air filter box, horn, decal placement, and antenna style per road number 

Lake State Railway began operations in 1992. LSRC operates on former D&M lines in the lower peninsula region of Michigan. Commodities carried include aggregates, coal, and grain. In 2016, LSRC acquired two MP15AC locomotives from Union Pacific. 1501 is a former MKT unit, and 1502 was formerly owned by MILW.



  • Operating front and rear ditch lights
  • Horn style per road number
  • Firecracker antenna 

This release depicts several of the former MILW MP15ACs that wound up on the Union Pacific. The "UPY" reporting mark denotes "Union Pacific Yard", and is used to avoid number conflicts with other UP units.



  • Operating front and rear ditch lights
  • Two different paint schemes
  • Sinclair antennas
  • Horn style per prototype road number

Running from Manhattan to Suffolk County in New York, LIRR is the oldest railroad in the US still operated under its original name and charter. It is also the busiest commuter railroad in North America. In 1977, LIRR acquired MP15AC units #150-172.



  • Solid blue and yellow scheme


  • Solid blue and yellow scheme


  • Blue
  • grey
  • yellow scheme


  • Blue
  • grey
  • yellow scheme




  • Early YN3 repaints
  • Operating front and rear ditch lights
  • Timken bearing caps
  • Horn style per road number

CSX operates a large group of MP15ACs of L&N and SCL heritage. Many have been repainted into the "YN3" scheme of dark blue and yellow.



  • RV style air conditioner


  • Strobe lights
  • spare coupler knuckles on rear pilot


  • CSX angled-style ditch lights on rear
  • spare coupler knuckles on rear pilot 


  • Full cab interior
  • Wire grab irons
  • Coupler cut levers
  • See-through cab windows
  • Flexible rubber trainline hose
  • Flexible rubber MU hoses
  • Windshield wipers
  • Lift rings
  • Blomberg-B trucks
  • Sander lines
  • Directional constant lighting
  • Walkway Tread
  • Fine-scale Celcon handrails for scale appearance
  • Headlight brightness remains constant
  • Separately applied photo-etched metal and injection molded detail parts
  • Detailed fuel tank with fuel fillers, fuel gauges, breather pipes  
  • DCC-ready features Quick Plug plug-and-play technology with 21-pin NEM connector
  • Accurately-painted and –printed paint schemes
  • McHenry® scale knuckle couplers - Kadee® compatible
  • Fully-assembled and ready-to-run
  • Scaled from prototype resources including drawings, field measurements, photographs, and more
  • Genesis driveline with 5-pole skew wound motor, precision machined flywheels, and multi-link drivetrain
  • 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 
  • Heavy die-cast frame for greater traction and more pulling power
  • Packaging securely holds model for safe storage
  • Replacement parts available
  • Minimum radius: 18" 


  • Operating ditch lights (if equipped)
  • Operating ground lights
  • Newly designed motor is more powerful and quieter than before
  • DCC-ready models feature 21-pin plug
  • DCC & sound models feature Tsunami2 sound with dual cube speakers


The EMD MP15 is a light road switcher that was built between 1974 and 1980. It came in two designs, the MP15DC and the MP15AC. It was billed as replacement for the EMD SW1500

The MP15DC's standard Blomberg B trucks were capable of transition and road speeds up to 60 mph (97 km/h), allowing use on road freights. Soon there was a demand for a model with an advanced AC drive system. The MP15AC replaced the MP15DC's DC generator with an alternator producing AC power which is converted to DC for the traction motors with a silicon rectifier. The MP15AC is 1.5 ft (457 mm) longer than an MP15DC, the extra space being needed for the rectifier equipment. The alternator-rectifier combination is more reliable than a generator, and this equipment became the standard for new diesel-electric locomotive designs.

The MP15AC is easily distinguished from the DC models. Instead of the front-mounted radiator intake and belt-driven fan used on all previous EMD switchers, these have intakes on the lower forward nose sides and electric fans. Side intakes allowed the unit to take in cooler air, and the electric fans improved a serious reliability issue found in its earlier DC sisters.

In the early 1970s railroads were starting to convert to AC power, the six largest buyers, Milwaukee (64), Southern Pacific (58), Seaboard Coast Line Railroad (45), Nacionales de México (25), Long Island (23), and Louisville & Nashville (10), were all buying AC road locomotives. 36 more units were sold to 8 other customers. 

This information is based on the copyrighted Wikipedia article "EMD MP15AC"; 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.


DCC: Ready/21-Pin NEM
SOUND: Ready
Axles: 4
Minimum Age Recommendation: 14 years
Is Assembly Required: No

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