The GP40 was considered the top of EMDS four-axle line when first introduced in the late 1960s. It visually differed from earlier GP models, featuring three radiator fans on its long hood, but was otherwise similar in style to the GP38, which entered production around the same time. The locomotive was popular for its ease of maintenance and standardized features and remained in production until succeeded by the GP40-2 in the early 1970s. Today, many remain in service hauling local freights and performing yard duties. The Bachmann HO Scale GP40 features realistic, prototypical detail, fine-scale handrails, and comes with Soundtraxx Sound Value On Board.

Features include:

• DCC Sound Value sound-equipped for sound, speed, direction, & lighting control.
• Dual-mode NMRA-compliant decoder.
• Soundtraxx Econami16-bit polyphonic sound with user-adjustable sound effect and volume options.
• Soundtraxx Hyperdrive2 Advanced Motor Control for refined low-speed operation.
• Flex-Map function mapping technology for reassigning function keys F0-F28 to any effect.
• Precision Motor.
• Die-cast frame.
• All-wheel drive.
• Directional headlights with Rule 17 headlight dimming.
• Highly detailed painted bodies with precision graphics.
• Separately applied handrails and horn details.
• Clear cab windows.
• See-through trucks with detailed sideframes.
• Blackened metal wheels with RP25 contours.
• Magnetically operated E-Z Mate Mark II couplers on the front and rear.
• Performs best on 18 radius curves or better.
• Product Measurements: L 8.5 in., W 1.5 in., H 2 in.