Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R0091173 found under Shield Heat Sink by Denel Vehicle Systems. The National Stock Number assigned to this part is 2990015749706, 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 R0091173.