Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 404HTX1 found under Arrester Spark Exhaust by Donaldson Co Inc. The National Stock Number assigned to this part is 2990000732788, 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 404HTX1.