Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number XC4 4T 13740 AA found under Switch Thermostatic by Daimler Trucks North America Llc. The National Stock Number assigned to this part is 5930014924903, and the Federal Supply Class is 5930 Switches. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like XC4 4T 13740 AA.