Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3L516 found under Engine Electrical Starter by Caterpillar Inc. The National Stock Number assigned to this part is 2990001050282, 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 3L516.