This cover is part of the engine crankshaft seal system on the cab and chassis, built as an aftermarket replacement. It measures 12.001 x 12.001 x 12.001 inches and is sold individually.FeaturesPart, number BCR-7234Engine crankshaft seal system coverDimensions: 12.001 x 12.001 x 12.001 inchesSold individually (EACH)Tech SpecsHeight: 12.001 in.Width: 12.001 in.Length: 12.001 in.Unit of Measure: EACHUsed in this Mack modelCRDP 95 / CRD 96 Differential