... SteelOEM No.12471370 O.D 277MMHeigth 60MMIncluded steel differential cover,Gasket and MagnetCover Thickness 2.0mmCover FinishedElectrophoresis/ZINC ... /Include magnetic drain plug/Oil changes without removing the cover Make &Model Make Model BUICK 82-85 ELECTRA, ... ,ASTMQuality Certification ISO9001:2000 , TS16949 RAMIS's Differential Cover will protect your diff against the hazards of competition or ...