Moroso 85661 PCV Air Oil Separator Catch Can Kit Small Body

The Moroso 85661 is a small-body PCV Air/Oil Separator — also known as an oil catch can — designed to intercept excess crankcase vapors and residual oil mist before they re-enter the intake tract. From the factory, engines vent these contaminants directly back into the intake manifold, which can lead to detonation, harmful oil deposits on intake valves, carbon buildup in direct injection engines, and reduced intercooler efficiency in forced induction applications. The Moroso Air/Oil Separator eliminates this problem at the source.

The compact small-body design — 4.5" tall by 3.75" diameter (with clamp installed) — makes it ideal for tight engine bays where space is at a premium. The billet aluminum body features internal baffling and a cleanable mesh media to efficiently trap oil mist. The two-piece body unscrews for easy draining and cleaning, and is available in polished or black anodized finish. The finish can also be further customized with chrome, paint, or powder coating.

Kit Includes:

• 3/8" NPT 90° inlet and outlet fittings
• 60" of 3/8" rubber PCV vapor hose for inline plumbing
• Billet aluminum mounting clamp
• Stainless steel mounting bracket

Key Features:

• Plumbs inline into the vehicle's existing PCV system — no major modifications required
• Internal baffling and cleanable mesh media for efficient oil capture
• Small-body profile fits where larger separators cannot
• Two-piece body unscrews for quick, clean draining
• Billet aluminum construction — polishable, chrome-able, or powder-coat ready
• Available in polished or black anodized finish

The Moroso 85661 is a straightforward, effective upgrade for any performance street or track engine where intake cleanliness and long-term engine health are a priority.