Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 12103 found under Manifold Valve by Almo Manifold And Tool Co. The National Stock Number assigned to this part is 4810012250107, and the Federal Supply Class is 4810 Valves Powered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 12103.