Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number U17217 found under Ring Piston by Deere And Company. The National Stock Number assigned to this part is 2930012173501, and the Federal Supply Class is 2930 Engine Cooling System Components Nonaircraft. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like U17217.