Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C38-51-18 found under Venturi Throttle Bo by Zenith Fuel Systems Inc. The National Stock Number assigned to this part is 2910003585601, and the Federal Supply Class is 2910 Engine Fuel System Components Nonaircraft. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like C38-51-18.