Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 12543 found under Valve Linear Directional Control by Bae Systems Tactical Vehicle Systems Lp. The National Stock Number assigned to this part is 4810013751207, 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 12543.