Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 272741R91 found under Regulator Engine Generator by Navistar Intl Corp. The National Stock Number assigned to this part is 2920006407518, and the Federal Supply Class is 2920 Engine Electrical System Components Nonaircraft. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 272741R91.