Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 7S8337 found under Crankshaft by Caterpillar Inc. The National Stock Number assigned to this part is 4310004915006, and the Federal Supply Class is 4310 Compressors And Vacuum Pumps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 7S8337.