Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1159LM20543-11 found under Bushing Sleeve by Gulfstream Aerospace Corp. The National Stock Number assigned to this part is 3120011846763, and the Federal Supply Class is 3120 Bearings Plain Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 1159LM20543-11.