Moroso 85484 Air Oil Separator Billet Aluminum PCV System

The Moroso 85484 Air Oil Separator is a high-performance engine component designed to be plumbed into your vehicle's PCV (Positive Crankcase Ventilation) system. This essential device captures excess crankcase vapors and residual oil mist, preventing them from re-entering the intake tract where they can cause performance issues.

Why You Need an Air Oil Separator:

Factory PCV systems vent crankcase vapors and oil directly back into the intake manifold, which can lead to detonation, reduced octane efficiency, and oil deposits forming throughout the intake tract—including on the valves themselves. By installing this air oil separator, you eliminate these contaminants before they reach your engine's intake system, resulting in cleaner combustion and better performance.

Key Features:

• Billet aluminum construction with show-quality finish that can be polished, chromed, or powder coated to match your engine bay
• Complete installation kit includes 3/8" 90-degree inlet and outlet fittings, 60 inches of 3/8" rubber hose, billet aluminum mounting clamp, and mounting bracket
• Convenient bottom drain with elbow fitting for virtually mess-free oil removal
• Compact design fits most engine compartments while providing maximum vapor separation efficiency

This air oil separator is ideal for performance and racing applications, turbocharged vehicles, or any engine that experiences elevated crankcase pressure. Regular maintenance is simple—just drain the collected oil periodically through the bottom drain valve.