When fiberglass boot protectors failed the demands of Professional Racing, Thermal Control Products introduced a new high temperature Spark Plug Wire Protector. Manufactured of a dual layered composite material and offering a continuous operating temperature of 1800°F, while reflecting 90% of the thermal energy generated in the engine compartment. The heat shield is manufactured with a 45° beveled end, insuring the Spark Plug Boot is fully protected from engine block and header heat