Moroso 85498 Air Oil Separator Billet Aluminum PCV Crankcase Vent - Kit

The Moroso 85498 Air Oil Separator is a high-performance crankcase ventilation solution designed to be plumbed inline with your vehicle's PCV (Positive Crankcase Ventilation) system. It captures excess crankcase vapors and residual oil mist before they can re-enter the intake tract, keeping your intake manifold, intake valves, and throttle body clean and free of oil deposits.

From the factory, most vehicles route crankcase vapors directly back into the intake manifold. Over time, this can lead to harmful oil buildup on intake valves, detonation issues, and reduced engine efficiency — especially problematic in direct-injected and forced-induction engines. The Moroso Air Oil Separator intercepts these vapors, collects the oil, and allows only clean air to return to the intake.

Key Features:

• Plumbs inline with the factory PCV system to capture crankcase vapors and oil mist
• Prevents oil deposits from forming in the intake tract, including on intake valves
• Reduces the risk of detonation caused by oil-contaminated intake air
• Billet aluminum body complements any engine bay and can be polished, chromed, or powder coated for a custom appearance
• Features a bottom drain with elbow fitting for virtually mess-free oil collection and draining

What's Included:

• Billet aluminum Air Oil Separator body
• 3/8 in. 90° inlet and outlet fittings
• 60 in. of 3/8 in. rubber hose for inline plumbing
• Billet aluminum mounting clamp for the separator body
• Mounting bracket

The Moroso 85498 is an ideal upgrade for street performance, track, and modified vehicles where intake cleanliness and engine protection are a priority.