This kit includes a valve rocker arm cover for a 1955-67 Corvette 348 & 409 engine. It is made of high-quality rubber material and comes with neoprene and 4 back-up washers. The rocker arm is designed to fit perfectly and has a matte finish that gives it a vintage look. This product is perfect for those who want to replace their old rocker arm or for those who want to upgrade their engine. It is compatible with a wide range of parts and is easy to install. Get this kit now and take the first step in restoring your Corvette engine. VINTAGE SET HAS SHELF WEAR