This WalthersMainline EMD SD50 is perfect for heavy freight service on  your HO Scale railroad. As demand for higher-horsepower units and better fuel economy continued to grow in the late 1970s, EMD began testing a  new six-axle model in 1979, which entered production as the SD50 in  1981. Like the prototype, this locomotive is a great addition to your  railroad's fleet of heavy diesel road units. The WalthersMainline SD50  has the features you want to make it a star performer on your layout: 

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• One time run of these road numbers, order now - limited quantity available!
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• Prototypes in main line, regional and lease-fleet service from 1984 to the present 
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• Updated power trucks with HT-C sideframes
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• Revised and corrected dynamic brake intake grilles
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• Anti-slip detail on walkways
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• Open grating on steps
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• Phase Two shell with molded drill starter points for grab irons in EMD SD50-60 Diesel Detail Kit (910-256) sold separately
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Same powerful drive as WalthersProto(R) locos featuring:

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• 5-pole skew-wound motor
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• 14:1 gear ratio
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• Helical-cut gears for quiet operation and easy multiple unit operation
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• All-wheel drive and electrical pickup
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• Dual machined brass flywheels
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• Heavy die-cast metal chassis
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• Constant and directional LED headlights
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• 21-pin plug for easy DCC conversion
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• Correct size RP-25 metal wheels
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• Proto MAX(TM) metal knuckle couplers
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