... Steel 4.Application:BUICK,CADLLAC,CHEVROLET 4WD TRUCK Differential Covers: ItemDifferential coverCover MaterialLow Carbon SteelOEM No ... .12471370 O.D 277MMHeigth 60MMIncluded steel differential cover,Gasket and ... EL CAMINO, 82-85 IMPALA, 82-83 MALI4 Wheels Truck. Executive StandardVDA6.1 ,SAE ,ASTMQuality Certification ISO9001:2000 , ...