ACT Heavy Duty Clutch Pressure Plate | Chevrolet Cobalt SS (05-07) (GM014)2005 2007 Chevrolet Cobalt SS Heavy Duty Pressure Plate by ACT GM014 pressure plate features an exclusive diaphragm design to increase clamp load, reduce deflection and maximize clutch life. All ACT diaphragms endure a four stage, heat treating process for unparalleled performance. ACT pressure plates have precision cover stampings to provide rigidity and consistency. ACT's Heavy Duty pressure plates increase clamp load by 20 to 50 percent. The Heavy