Cylinder Head Gaskets Repairing Parts for 300 250R This gasket set is designed for use with cylinder head repairs on specified engine models.It includes components necessary to seal the cylinder head and engine block, helping maintain compression and proper of the engine's internal systems.The parts are made to match specifications for fitment and function.Installation requires standard mechanical tools and knowledge of engine assembly procedures. This is a compatible aftermarket component.Brand names are cited solely to show which devices it works with.