The turbo blanket heat shield is a device designed to wrap around the turbocharger housing in order to reduce the amount of heat that is radiated from the turbocharger. 

This can help to protect other components in the engine bay from heat damage, as well as improve the performance of the turbocharger itself by reducing the amount of heat soak that occurs. 

The turbo blanket heat shield is typically made from high-temperature materials such as fiberglass or ceramic, and is designed to be a simple and effective way to improve the reliability and performance of a turbocharged engine.