Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SWG 155-554790-002 REV 1 found under Heater Immersion Liquid Fuel Fir by Chromalox Corp. The National Stock Number assigned to this part is 4520014428481, 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 SWG 155-554790-002 REV 1.