Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ESCU-48363S found under Escu Trailer by Port A Cool L L C. The National Stock Number assigned to this part is 4120014708417, and the Federal Supply Class is 4120 Air Conditioning Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ESCU-48363S.