The HKS SMG/K head gasket for FA20 engines (t=1.0) is a dedicated replacement gasket with a 1.0mm thickness formulated for FA20 cylinder head installation. It provides the precise sealing dimension required when reassembling the head during repairs or engine builds. Use this gasket to match the FA20 head specifications calling for a 1.0mm SMG/K unit.
HKS SMG/K FA20 t=1.0