Air/Oil Separator

The MOROSO Air/Oil Separator (SKU MOR85474) is a precision engine accessory designed to manage crankcase ventilation and separate oil mist from pressurized air in high-performance and racing applications. Built for enthusiasts who demand clean air delivery and extended engine life, this universal separator works across a wide range of engine configurations and custom builds. Whether upgrading a street machine or refining a dedicated track platform, this polished aluminum component represents professional-grade PCV system engineering.

This air/oil separator features a 3-inch diameter design with a compact 4-inch height, optimizing both performance and underhood packaging. The unit accepts 1/2-inch NPT female connections for inlet and outlet ports, allowing flexible plumbing configurations to match your engine bay layout and existing line routing. The polished aluminum construction resists corrosion while projecting professional aesthetics, and the included petcock drain valve enables simple maintenance and accumulated oil removal. Internal baffle technology effectively separates entrained oil particles from ported air, reducing carbon buildup in intake systems and protecting downstream engine components.

Ideal for street rods, muscle cars, supercharged builds, and turbocharged platforms, the MOROSO separator integrates seamlessly into custom PCV systems where OEM solutions are unavailable or undersized. The universal design accommodates most V-block and small-block engine families, though fitment verification is recommended for tight engine bays. Installation requires basic hose and fitting selection matching your 1/2-inch NPT plumbing standards; the kit includes all necessary components for immediate deployment. Regular inspection of the petcock drain ensures optimal separator function and prevents oil carryover into your intake manifold.