The TCI 5-Clutch “Power Pack” kit for Chrysler A618 (47RE & 48RE) transmissions is made for performance Dodge diesel and gas applications. The kit adds one more clutch plate to the third gear drum. The billet aluminum clutch piston is CNC-machined, providing a more positive and balanced clutch application over the OEM cast piston. A more stable piston apply and more friction area delivers greater performance and durability. This kit uses Raybestos frictions and steels.