This assembly is specially designed for extreme duty 4L80E applications. Replaces the OEM powdered metal pressure plate, snap ring and 4 clutch and steel plates, heavy duty snap ring, 5 extreme duty clutch plates and 5 extreme duty Kolene processed steel plates. Furnishes a huge increase in intermediate clutch pack capacity, increasing durability, efficiency and performance. Fits 99 and up models with .250" intermediate clutch pressure plate.