MTH RailKing EMD SD-9 Diesel Engine – Great Northern

M.T.H. Authorized Retailer Berwyn’s Toys & Trains in Berwyn, Illinois

  • Road Name: Great Northern
  • Cab Number: 576 & 594
  • Product Line: RailKing
  • Scale: O Scale
  • Proto-Sound 3.0
  • High Rail Wheels
  • Delivered September 2022


This product is currently out of stock and unavailable.

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In the General Motors’ Electro-Motive Division time line, 1954 holds significance for two important events. In that year, the manufacturer produced its 15,000th locomotive and introduced the 1,750-h.p. SD9. The road switcher was produced until 1959. Basically an elongated — and, some might say, handsomer — version of EMD’s very popular GP9, the SD9 spread the same horsepower over two additional axles, resulting in a lower loading on each axle. This made the engine more suitable for use on light rail and in situations requiring power at low speeds, such as hump yard service.

The RailKing Scale model of the SD9 is built to 1/48th scale proportions and is larger than typical RailKing diesels.  The engine can operate on O-31 curves.


  • Intricately Detailed, Durable ABS Body
  • Die-Cast Truck Sides, Pilots and Fuel Tank
  • Metal Chassis
  • Metal Handrails and Horn
  • (2) Handpainted Engineer Cab Figures
  • Authentic Paint Scheme
  • Metal Wheels, Axles and Gears (2) Remote-Controlled Proto-Couplers
  • Prototypical Rule 17 Lighting
  • Directionally Controlled Constant Voltage LED Headlight
  • Illuminated LED Number Boards
  • (2) Precision Flywheel-Equipped Motors
  • Operating ProtoSmoke Diesel Exhaust
  • Onboard DCC/DCS Decoder
  • Locomotive Speed Control In Scale MPH Increments
  • 1:48 Scale Proportions 
  • Proto-Sound 3.0 With The Digital Command System Featuring Freight Yard Proto-Effects 
  • Unit Measures: 16” x 2 3/4” x 4” 
  • Operates On O-31 Curves 

Additional information


30-20935-1, Cab No. 576, 30-20936-1, Cab No. 594


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