Spectre's 1 inch Valve Cover Breather Push-In with Tube is for all valve covers with 1-1/4 inch breather holes. This valve cover breather has been designed to accommodate PCV tubes and features an internal baffle to prevent oil splash and provide superior ventilation with 5/8 inch nipple. Manufactured using high quality materials, these valve cover breathers are triple chrome plated steel ensuring it performs as good as it looks. Note: Legal in California only for racing vehicles which may never be used, registered, or licensed for use upon a highway. See spectreperformance.com for CARB status on each part for a specific vehicle.