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The Moroso filtered valve cover breather clamps onto a 1.5 inch opening and uses a no-hood, open-screen design to maximize airflow while catching oil droplets. Its clamp-on installation avoids permanent modification and the larger diameter supports higher flow venting. Use it where a simple, unrestricted filtered breather is required for valve cover venting.
Moroso Filtered Valve Cover Breather - Clamp-On - No Hood - 1.5in ID
