These billet hats are used to make typical short ls3/ls7 style injectors the same height as a conventional ev1 style injector (60mm). These are very commonly used on our Bosch 210 injectors to get the height up for intake/fuel rails that need the tall heigh. They are anodized for great durability against alcohol based fuels. These are for 14mm o ring injectors and the top o ring that comes on these is 14mm also.
