Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 506319 found under Disc Lower Spring by Delphi Automotive Systems Llc. The National Stock Number assigned to this part is 2910011215172, and the Federal Supply Class is 2910 Engine Fuel System Components Nonaircraft. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 506319.