Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 91D1239 found under Cup Tapered Roller Bearing by Ford Motor Co Ltd. The National Stock Number assigned to this part is 3110001000533, and the Federal Supply Class is 3110 Bearings Antifriction Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 91D1239.