Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number LR54904 found under Impeller Machined A by Crane Company. The National Stock Number assigned to this part is 1680015470342, and the Federal Supply Class is 1680 Miscellaneous Aircraft Accessories And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like LR54904.