This HKS grommet‑type head gasket is specified for RB26 engines with an 88.0 mm bore and a 1.6 mm thickness. As a grommet‑style gasket tailored to the RB26 application, it provides the correct dimensioning for that bore size and thickness and is intended as a direct replacement gasket for compatible RB26 cylinder head and block assemblies.
HKS RB26 88mm Bore 1.6mm Thick Grommet Type Head Gasket