Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 463-53586T016 found under Heater Duct Type Stationary by Borgwarner Corp. The National Stock Number assigned to this part is 4520006100059, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 463-53586T016.