Made by Scott Drake, these valve covers are die-cast from high-quality 383-3 aluminum alloy, and then given a durable powder-coated wrinkled finish or polished aluminum finish. They also feature a cadmium plated oil filler tube to help stop corrosion, an improved oil baffle design to accommodate high-lift cam shafts, and will work with most roller rockers. Spark plug wire brackets and PCV grommet included. Available in a variety of styles.