Moroso 85489 Air Oil Separator Billet Aluminum PCV System

The Moroso 85489 Air Oil Separator is a high-performance emissions control component designed to be plumbed into your vehicle's PCV (Positive Crankcase Ventilation) system. This separator captures excess crankcase vapors and residual oil mist before they can reenter the intake tract, preventing common problems associated with factory PCV systems.

Why You Need an Air Oil Separator:

Factory PCV systems vent crankcase vapors and oil residue directly back into the intake manifold, which can cause detonation, reduced performance, and oil deposits to form throughout the intake tract—including on the valves themselves. The Moroso 85489 eliminates this problem by intercepting and separating oil from the crankcase vapors before they reach your engine's intake.

Key Features:

• Billet aluminum construction complements any engine compartment and can be polished, chromed, or powder coated for a custom appearance
• Complete installation kit includes 3/8-inch 90-degree inlet and outlet fittings, 60 inches of 3/8-inch rubber hose for inline plumbing, billet aluminum mounting clamp, and mounting bracket
• Bottom drain with elbow fitting provides virtually mess-free draining of collected oil
• Separates oil mist from crankcase vapors to keep intake tract clean
• Prevents detonation and performance loss caused by oil contamination in the intake system

This air oil separator is ideal for high-performance street vehicles, turbocharged applications, and racing engines where maintaining a clean intake system is critical for consistent performance.