Providing enough steam to power train heat and some air conditioning systems on postwar trains taxed the standard water supply of EMD F7 A units set-up for passenger service, prompting EMD to roll out the new FP7 in 1949. Though outwardly similar to the F7A, FP7s were actually four feet longer to accommodate bigger water tanks with a capacity of 950 US gallons. Standard passenger power into the Amtrak era and beyond (with some also handling freight chores), these WalthersProto replicas are fully assembled and ready for service with: One time run of these roadnumbers, order now - limited quantity available! Matches the prototypes′ extended frame and body Railroad-specific details DCC-ready with 21-pin DCC (Mtu) connector Five-pole, skew-wound, high-torque, high-efficiency can motor Helical gears with 14:1 ratio for smooth, ultra-quiet running Easy multiple-unit operation Correct RP-25 wheelsets Proto MAX(TM) magnetic metal knuckle couplers Road-specific features of this WalthersProto replica include: A Unit details - Nathan M3 air horn w/2 bells forward, one reverse Sinclair radio antenna Ditch lights Plain nose door Upper headlight Freight pilot Curved nose grab irons Horizontal body louvers and grilles Knob-style sand hatch covers Circular water filler Cab wind deflectors Extended standard-type winterization hatch