Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 93213-13C found under Ring Piston by Dover Resources Inc. The National Stock Number assigned to this part is 2815009639618, and the Federal Supply Class is 2815 Diesel Engines And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 93213-13C.