Heatshield Products 300074 Lava Turbo Shield Volcanic Turbo Heat Shield for T4 Flange Turbo Housings Continuous operating temperature of 1800 degree Fahrenheit, 2200 degree Fahrenheit intermittent Capable of reducing up to 60 percentage of radiant heat Superior design with silica contact layer, won't melt like similar volcano turbo shields Reduces turbo lag, lowers under hood temperatures Custom fit, installs in minutes