Turbosmart (TS-0624-2072) 7 PSI Internal Wastegate Actuator for Porsche 996/911 GT2 Silicone diaphragm with Nomex reinforcement to withstand high temperatures High grade, billet aluminum construction Stainless steel rods and connecting clevis for corrosion resistance Locking collar design cap allows for quick spring changes Ideal for use with any Turbosmart boost controller