Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number UA538100 1 found under Heat Exchanger Fuel by Triumph Thermal Systems Inc. The National Stock Number assigned to this part is 2935011129354, and the Federal Supply Class is 2935 Engine System Cooling Components Aircraft Prime Moving. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like UA538100 1.