Cobb Tuning Turbo Heatshield - Subaru STI 01-07Reduce heat soak into key engine components The COBB Tuning stainless steel heat shield is in house designed and a replacement for the factory turbo heat shield found on most vehicles. A modification which goes hand in hand with an aftermarket downpipe install, the heat shield prevent the venting of heat cause from exhaust gas temperatures to vent into the engine bay, there by reducing heat soak into key components that benefit from cooler ambient