Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A55-51-24 found under Line Assy Oil Gover by Dresser Industries Inc. The National Stock Number assigned to this part is 2990003108216, 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 A55-51-24.