HKS 89.5mm Bore 1.2mm Thick Grommet Type Head Gasket | FA20 (23002-AT002)HKS Grommet Type Head Gasket 20132020 Subaru FA20 2. 0L Turbo Engine Part #: 23002 AT002 Overview The HKS 89. 5mm Bore 1. 2mm Thick Grommet Type Head Gasket is designed specifically for enthusiasts and tuners working with the Subaru FA20 engine, particularly in turbocharged and supercharged applications. As engine modifications increase power output, the head gasket plays a critical role in maintaining proper sealing and preventing costly leaks or