This transmission insulator set fits Mack Superliner cab applications and comes as a pack of 4 identical units, each measuring approximately 12.001 in. x 12.001 in. x 1.02 in. Mounted between the transmission and frame, this style of insulator supports the transmission’s weight while absorbing shock and vibration. It is a replacement for the Mack fitment listed.Interchanges:20QL317AM20QL317MMack 20QL324M20QL342M20QL346M2517082740-356PL1091This unit is sold in packs of 4.FeaturesSold as a pack of 4 identical insulatorsDimensions: 12.001 in. x 12.001 in. x 1.02 in.For Mack Superliner cab applicationsTech SpecsHeight: 12.001 in.Width: 12.001 in.Length: 1.02 in.Sell pack: 4 piecesUsed in this Mack modelBell Housing Components