Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number KS 42172 found under Bearing Half Washer Thrust by Wartsila Diesel Inc. The National Stock Number assigned to this part is 3120014461424, 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 KS 42172.