HKS Head Gasket for Nissan SR20DETHKS Nissan SR20DET Head Gasket Specification HKS cylinder head gaskets have been specially designed to withstand high pressures and temperatures in engines with a high compression ratio (high turbo pressure or strong compression). Manufactured from multilayer steel they combine all of HKS's Japanese technology. This high quality head gasket will withstand all the abuse you can inflict on it! *It is essential to have the mating surfaces checked by a