Part Number 31973BS having (CAGE Code 1ML14) and FSC 2930 Engine Cooling System Components, Nonaircraft in stock with ready to ship. Get an instant quote for 31973BS Tube Air Compressor by Dw Hercules Llc. Fill the form below with your desired order quantity, targeted price and the expected order-fulfilment date. Our dedicated account manager will get back to you within 15 minutes.