Moroso 85477 Air/Oil Separator Valve Cover Breather Filter

The Moroso 85477 is a one-piece push-in valve cover breather featuring an advanced fiber design that functions as an air/oil separator. This breather is engineered to capture oil mist from crankcase vapors and drain it back into the valve cover rather than allowing it to escape through the air vents, keeping your engine bay cleaner and reducing oil consumption.

Key Features:

• One-piece push-in design for easy installation
• Fiber element effectively separates oil from air and drains it back into the valve cover
• Fits Moroso valve covers or any valve cover with a 1.22-inch diameter hole
• Includes PCV valve grommet and valve cover grommet for complete installation
• Sold as a pair (two breathers per package)

This air/oil separator breather is ideal for performance engines that need effective crankcase ventilation while minimizing oil loss. The fiber filtration media ensures clean air circulation while the integrated drainage design returns separated oil to the engine.