View 1 Photo View 0 Videos 1961 Caterpillar / Marathon 21B 183 150 KW Generator Newly Listed At auction Jul. 1 1961 Caterpillar / Marathon 21B 183 150 KW Generator, D346 Cat Engine Diesel Engine, Gas Pony Motor, 400 Amp Elec. Panel, 11.00 x 20 Tires, NOT OPERATIONAL DAY OF LISTING ConditionUsedStock NumberIG3615 MLS Number14440828CategoryGenerator Sets Last Updated6/20/2026 LocationFort Pierre, SD, US Listed ByBigIron Auctions (844) 253-___ SHOWNUMBERCall Seller Email Seller Save More Info