Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 19DS11-314 found under Pump Assembly Oil by Chesapeake Corp. The National Stock Number assigned to this part is 4130011146123, and the Federal Supply Class is 4130 Refrigeration And Air Conditioning Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 19DS11-314.