Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 63C41599 found under Hose Assembly Air Duct by Sacramento Air Logistics Center. The National Stock Number assigned to this part is 4720000222476, and the Federal Supply Class is 4720 Hose And Flexible Tubing. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 63C41599.