Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C46-1178 found under Clutch Assembly Friction by Borgwarner Corp. The National Stock Number assigned to this part is 2520006172355, and the Federal Supply Class is 2520 Vehicular Power Transmission Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like C46-1178.