Listed for your consideration is a helix Humper motor that was found in a USRA light mikado steam locomotive from Bowser. The kit was never finished. That is why this is listed as new/see details. It does not have the original packaging. I do not know what all Bowser locomotive said this will fit. I am guessing anything that also a DC 71 would fit into. It was bench tested amd runs great. Please feel free to ask questions.