Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 541 1521 found under Parts Kit Engine Wa by Cummins Power Generation Inc. The National Stock Number assigned to this part is 2930016315216, and the Federal Supply Class is 2930 Engine Cooling System Components Nonaircraft. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 541 1521.