Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number OV35A378-C4C found under Gear Assembly Speed by Cone Drive Operations Inc. The National Stock Number assigned to this part is 3010014130107, and the Federal Supply Class is 3010 Torque Converters And Speed Changers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like OV35A378-C4C.