Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 870-6018 found under Heater Coolant Engine by Phillips Mfg Co. The National Stock Number assigned to this part is 2990012625284, 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 870-6018.