Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 9D2053 found under Sleeve by Caterpillar Inc. The National Stock Number assigned to this part is 2420010625278, and the Federal Supply Class is 2420 Tractors Wheeled. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 9D2053.