Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number K163666PC91 found under Bearing Bushing Typ by Allis Chalmers Corp. The National Stock Number assigned to this part is 3120003690193, 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 K163666PC91.