Turbo Turbocharger Heat Shield Blanket Black for T4 T67 T71 T76 T88 GT40 GT45 T04 Tolerance: 1" ceramic insulation that can hold up to 2000F Inner Surface: calcium magnesium silicate wool Inner top layer: Made of stainless steel knitted wire mesh Reduces of amount of radiant heat coming from turbocharger. Help to lower engine bay temperatures Fits for most vehicles with T3/ T4/ T6 turbine housing turbo charger