Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SA 0503 E found under Governor Diesel Eng by Woodward Controls Inc. The National Stock Number assigned to this part is 2990007375976, 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 SA 0503 E.