Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RC-000643A found under Cap Assembly Protective Muffler by Phillips And Temro Industries Inc. The National Stock Number assigned to this part is 2990016112314, 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 RC-000643A.