Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CS4720-00172A212R found under Hose Preformed by Brp Us Inc. The National Stock Number assigned to this part is 4720008284153, 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 CS4720-00172A212R.