KAT176-2211 SF Warbonnet F7B

The F7-A and B Units were used in the post 1950's lifetime of the train, replacing the externally identical F3 units, and providing improved motive power for what is one of America's most recognizeable and certainly one of the most historically luxurious passenger trains. Operating at 1500 horsepower, it commonly took four F7s (two A and two B units) to pull the name train.