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The HKS grommet‑type head gasket for FA20 engines is specified for an 89.5mm bore with a compressed thickness of 1.2mm and provides the sealing interface between the cylinder head and block on FA20 powerplants. Intended as a replacement gasket matching those bore and thickness dimensions, it restores proper combustion and coolant/oil sealing where that specification is required.
HKS FA20 89.5mm Bore 1.2mm Thick Grommet Type Head Gasket
