The Cometic MLX head gasket for 2008+ Subaru EJ255/257 (101mm bore, .051-inch) is a multi-layer design that uses an integrated "stopper" layer for combustion chamber sealing. The MLX construction improves clamp load around the cylinder without increasing bore distortion, offering a controlled sealing solution for these Subaru applications where consistent combustion sealing and reduced distortion are priorities.
Cometic 2008+ Subaru EJ255/257 101mm Bore .051in MLX Head Gasket