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. This breather comes complete with necessary grommets for easy installation. These valve cover breathers are made with triple chrome plated steel ensuring it performs as well 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. Spectre s 1 inch Valve Cover Breather Push-In with Tube is for all valve covers with 1-1/4 inch breather holes. These valve cover breathers are made with triple chrome plated steel ensuring it performs as well as it looks.