Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 42KG311-04 found under Starter Engine Air by Ge Aviation Systems Llc. The National Stock Number assigned to this part is 2990013331563, and the Federal Supply Class is 2990 Miscellaneous Engine Accessories Nonaircraft. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 42KG311-04.