Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 144B8218P1 found under Thermocouple Bearing Water by Ametek Advanced Industries Inc. The National Stock Number assigned to this part is 4470001439450, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 144B8218P1.