Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GMCW 149879Y12 found under Bearing Sleeve by General Manufacturing Llc. The National Stock Number assigned to this part is 3120002509215, 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 GMCW 149879Y12.