Athearn Genesis G82723 HO Scale EMD GP9 Union Pacific UP 149 DC Model Scenery while the open block tread

while the open block tread design clears mud and debris for unmatched traction in loose surfaces

Die-cast hood & chassis for improved pulling performance

Road Number: 623603

Adjustable rock rail side sliders help the truck get over tough obstacles

Athearn Genesis G82723 HO Scale EMD GP9 Union Pacific UP 149 DC Model Scenery while the open block treadAthearn Genesis G82723 HO Scale EMD GP9 Union Pacific UP 149 DC In 1949, EMD introduced the GP7. The basic design followed most diesel switchers with the addition of a short hood instead of an end cab. The hoods were also full height to better accommodate the diesel engine and mechanical and electrical components. In 1954 EMD upgraded the GP7 to become the 1,750 horsepower GP9. Externally, the first GP9s were virtually unchanged from the last GP7s.