Made of 14 gauge 6061-T6 aluminum, this baffle mounts inside Moroso valve covers under the breather hole to keep oil from getting into the breather Use with Valve Cover Breathers Nos. 68720, 68721, 68722, 68723, 68724, 68725, 68730, 68740, 68741, 68781, 68810, 68813 or 68817 Cannot be used with engines equipped with stud girdles One per package includes all necessary fasteners