Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 542 16 64-53 found under Air Filter Element by Husqvarna Outdoor Products Inc. The National Stock Number assigned to this part is 6105015857906, and the Federal Supply Class is 6105 Motors Electrical. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 542 16 64-53.