Part Number UA531157-4 having (CAGE Code 78943) and FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment in stock with ready to ship. Get an instant quote for UA531157-4 Heat Exchanger Air To Water Aircraft by Triumph Thermal Systems Inc. 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.