Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 26553A found under Combustion Chamber Heater Coolan by Webasto Thermosystems Inc. The National Stock Number assigned to this part is 2990013972316, 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 26553A.