This used engine rear cover is a direct replacement for your Chevy or GMC Duramax 01-10 LB7 LLY LBZ LMM adapter plate. It is made of high-quality aluminum material. The mounting hardware is not included, but it is compatible with OE/OEM part number 8973177112 and interchange part numbers 897317711, 97317711, 973177116, 8973177112, 12622693, 973177118, 98004742, 8973177116, 98004741, 8973177118, and 98004055. Any questions please ask. Thanks!