Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 27-3740 found under Impeller Fan Axial by Toro Co The. The National Stock Number assigned to this part is 2930013259345, 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 27-3740.