This front engine insulator set fits Mack E6 engine applications and comes two per pack. Each insulator measures 12.001 x 12.001 x 12.001 inches. Mounted between the engine and frame, it cushions engine weight, absorbs shock, and helps keep vibration and noise out of the cab.Interchanges:Mack 20QL1119AMack 20QL1166This unit is sold in packs of 2.FeaturesFront engine (motor) insulator/mountSold as a pack of 2 unitsFits All Mack E6 enginesDimensions: 12.001 x 12.001 x 12.001 inchesTech SpecsHeight: 12.001 inWidth: 12.001 inLength: 12.001 in