Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TGS-23 found under Parts Kit Hydraulic Transmission by Automatic Transmission Parts Inc. The National Stock Number assigned to this part is 2520011813624, and the Federal Supply Class is 2520 Vehicular Power Transmission Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like TGS-23.