Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 81.12503-0035 found under Filter Element Fluid by Man Truck And Bus Ag. The National Stock Number assigned to this part is 2910002380033, 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 81.12503-0035.