Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 158-66447 found under Mounting Brkt Fuel by Atlas Copco. The National Stock Number assigned to this part is 4310015843043, and the Federal Supply Class is 4310 Compressors And Vacuum Pumps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 158-66447.