Average testing has shown an 25 degrees F drop and up to 35 degrees in some applications. Thermalnator gaskets are an effective but inexpensive upgrade for your vehicle – stock or modified.
“Thermalnator is a unique high temperature shielding gasket which replaces the stock intake manifold gasket. Thermalnator’s cooling properties reduce heat by stopping metal to metal contact between the intake manifold and the engine block, essentially allowing the intake manifold to perform like an intercooler. This lowers intake air temperatures resulting in increased intake air density.”
