Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 163353 found under Chamber Air Brake by Lear Siegler Truck Products Corp. The National Stock Number assigned to this part is 2530011778551, 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 163353.