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

• 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 magnetic metal knuckle couplers

Southern Pacific

Finished in the later gray and red scheme, these HO WalthersProto replicas feature:

• Nathan M-5 air horn

• Whip-type radio antenna with conduit

• SP-style snowplow pilot

• Upper headlight with twin sealed-beam (operating) and red emergency (UDE) lights (nonworking)

• Working rear back-up light

• Frame-mounted equipment box

• Rooftop photo-etched icicle breakers front and rear

The F7B features: