Moroso 85629 Small Body Billet Aluminum Air Oil Separator - Kit

The Moroso 85629 is a small body Air Oil Separator 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 — helping prevent detonation, carbon buildup, and oil deposits from forming on intake valves and manifold surfaces.

From the factory, most vehicles vent crankcase vapors directly back into the intake manifold. Over time, this can lead to reduced engine performance and costly buildup on intake components. The Moroso 85629 intercepts these vapors and collects the oil for clean, easy disposal.

Key Features:

• Small body billet aluminum construction — complements any engine bay and can be polished, chromed, or powder coated for a custom appearance
• PCV system compatible — plumbs inline to capture crankcase vapors and oil mist before they reach the intake manifold
• Mess-free bottom drain — features a bottom drain with elbow fitting for clean, easy oil removal
• Billet aluminum mounting clamp — secures the separator body, paired with a dedicated mounting bracket for solid installation

Kit Includes:

• Small body Air Oil Separator
• 3/8" 90° inlet and outlet fittings
• 60" of 3/8" rubber hose for inline plumbing
• Billet aluminum mounting clamp
• Mounting bracket
• Bottom drain elbow fitting

The Moroso 85629 Air Oil Separator is an effective upgrade for performance and street vehicles looking to protect their intake system from oil contamination and maintain optimal engine efficiency.