Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 312 031 05 33 found under Cover Ring Engine by Mercedes Benz Ag. The National Stock Number assigned to this part is 2815012370266, 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 312 031 05 33.