The Heatshield Products Lava Wastegate Heat Shield is a specially designed thermal barrier to protect the turbocharger wastegate actuator and its critical internal components from the excessive heat exposure it is subjected to from the exhaust side of the turbo. Protecting the wastegate from heat exposure increases the wastegate diaphragm life, and more consistent actuation of the wastegate by insulating the diaphragm from constant and extreme temperature changes that affect how quickly the wastegate opens and closes.