Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number DW4042 found under Pipe Exhaust by Hobart Brothers Company. The National Stock Number assigned to this part is 2990008769094, 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 DW4042.