Constructed between 1965 and 1971, the four-axle GP40 was one of the earliest EMD locomotives from the Second Generation era, and remarkably, it continues to be found in operation today. Built to replace the previously offered GP35 series, the GP40 was designed with versatility in mind, being equally efficient at yard work, industrial operations, and light road duties. A staggering 1,221 units were produced for railroads across the United States, Canada, and Mexico, using mostly standardized components (for ease of maintenance) unless directed otherwise by the purchaser.

Features include:

• Revised and upgraded tooling with improved body shell detail and correct proportions.
  
• Roadname-specific dynamic brake and non-dynamic brake versions.
  
• Precision motor and flywheel drive.
  
• All-wheel drive.
  
• Die-cast frame.
  
• Motor electrically isolated from frame for DCC decoder installation.
  
• LED directional headlights.
  
• Illuminated number boards.
  
• Detailed painted bodies with precision graphics.
  
• Separately applied fine-scale handrails, horns, and clear window glass.
  
• Blackened metal wheels with RP25 contours.
  
• Detailed trucks with see-through sideframes.
  
• Magnetically operated E-Z Mate® Mark II couplers, front and rear.
  
• Performs best on 11.25” radius curves or greater.
  
• Product Measurements: L 4.75 in., W 0.75 in., H 1.2 in.