Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GS4428 found under Windshield Wiper Assembly by Sprague Devices Inc. The National Stock Number assigned to this part is 2540015905552, and the Federal Supply Class is 2540 Vehicular Furniture And Accessories. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like GS4428.