Uni-Directional Screen

The Uni-Directional Screen from MOROSO is a precision-engineered windage tray screen designed for engine builders and performance enthusiasts who demand superior crankcase ventilation control. This steel screen insert manages oil mist and splash-back within the crankcase, protecting internal components while reducing windage losses that rob horsepower. Whether you're building a street engine, racing platform, or high-performance rebuild, this screen delivers the directional flow control that modern performance demands.

Constructed from durable steel, the uni-directional design allows controlled airflow in one direction while blocking reverse flow and turbulent recirculation. At just 4.23 pounds, it adds negligible weight while its engineered screen geometry reduces oil carryover into the intake tract and minimizes parasitic drag on rotating assemblies—both critical factors in extracting maximum efficiency from your engine. This windage tray screen benefits engine builders tackling displacement increases, forced induction conversions, or high-RPM applications where stock crankcase ventilation falls short.

Installation is straightforward: the screen positions inside your existing windage tray, requiring no welding or permanent alterations. Its universal compatibility makes it an essential addition for those looking to enhance engine performance without significant modifications. The cut-to-fit design allows for adaptability to various configurations, ensuring optimal performance across different setups.