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The HKS SMG/K head gasket for 4G63 applications (t=1.6) is a specified replacement gasket with a 1.6mm thickness. Intended for cylinder head assembly, it provides the correct sealing geometry for engines calling for this SMG/K specification. Choose the matching thickness when repairing or reworking 4G63 heads to preserve proper combustion chamber sealing.
HKS SMG/K 4G63(4-9) t=1.6
