SLEEVE AND CYLINDER HEAD COVER

摘要

A sleeve allowing the insertion of an oil control valve therein and used by inserting into a mounting hole formed in a cylinder head cover. The outer surface of the sleeve body of the sleeve is covered by a rubber-like elastic body layer. The rubber-like elastic body layer comprises projected lines formed around oil holes to surround the oil holes formed in the sleeve body. By this sleeve, the oil control valve can be fitted to the cylinder head cover with high oil tightness.