Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 12448056 ITEM 13 found under Chamber Air Brake by Mico Inc. The National Stock Number assigned to this part is 2530014479804, and the Federal Supply Class is 2530 Vehicular Brake Steering Axle Wheel And Track Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 12448056 ITEM 13.