Air/Oil Separator Univ. Small Body Black

The Air/Oil Separator Univ. Small Body Black by Moroso is a compact crankcase ventilation component designed for serious engine builders and performance enthusiasts who demand cleaner, drier intake charge and extended oil life. This universal separator addresses a critical need in modified engines: removing oil vapor and moisture from blow-by gases before they reach the intake manifold. Whether you're running a turbocharged street build, a naturally aspirated high-revving engine, or a track-focused platform, an effective air/oil separator prevents sludge accumulation, carbon buildup, and oil dilution that plague engines without proper PCV management.

Moroso's small body design utilizes centrifugal and baffle-chamber separation technology to spin and settle oil droplets out of crankcase vapors, allowing them to drain back into the pan while cleaner air exits to the intake system. The compact 7.375 x 13.75 x 4.5-inch footprint and lightweight 1.95-pound construction make installation feasible in tight engine bays without requiring extensive custom fabrication. The black powder-coated finish resists corrosion from moisture and offers a clean appearance in engine compartments. This small body format pairs ideally with modest displacement engines, street rods, and applications where space constraints prohibit larger separator housings.

Mechanics and engine builders favor Moroso separators for carbureted and fuel-injected applications where vacuum-driven PCV systems struggle to manage blow-by adequately. Installation requires routing crankcase breather lines from the valve cover and block to the separator inlet, then routing the outlet to the intake manifold or intake tract—a straightforward modification that yields measurable gains in oil quality and combustion cleanliness. The universal small body design accepts -10 or -12 AN hose fittings, making plumbing flexible and adaptable across multiple engine platforms. Whether upgrading a classic V8, a modern LS swap, or a purpose-built competition engine, this Moroso unit delivers reliable separation performance and protects your investment in precision engine work.