The Aeroflow Performance external wastegate bag / blanket range provides high quality material selection, design, and construction, whilst at an affordable price.These wastegate bags are designed to help minimize the heat soak transfer between themain body and actuator body ofthe wastegate. This will allowa more stable operation of thewastegate valve allowing consistent performance of the turbocharger. The added benefit from these bags will prevent the heat from damagingcomponents surrounding the external wastegates such as wiring and hoses. Will suit Aeroflow External Wastegates. May also suit other brands. Available in two different options titanium and carbon..