Oil/Tank Separator Tank

The MOROSO Oil/Tank Separator Tank (MPN 85471) is a precision air-oil separation system designed for high-performance engine builds where crankcase ventilation management is critical. This universal separator tank removes oil mist and moisture from positive crankcase ventilation (PCV) systems, protecting downstream components and maintaining cleaner intake air. Built for serious enthusiasts and professional technicians, this separator prevents oil contamination in supercharger systems, intercoolers, and intake manifolds—essential for extended engine life and reliable performance.

Constructed from lightweight aluminum in natural finish, this 3.125-inch diameter, 6-inch tall tank features 12 AN male inlet and outlet ports paired with a 6 AN male drain connection for complete system flexibility. The aluminum construction resists corrosion while remaining compact enough for engine bay integration on most applications. The dual 12 AN main ports handle incoming crankcase vapors and separated air return, while the dedicated 6 AN drain allows trapped oil to return safely to the pan or catch can—a configuration that maximizes separation efficiency without creating back pressure that could harm engine breathing.

This separator tank is ideal for turbocharged, supercharged, and naturally aspirated builds requiring aggressive PCV management. Its universal mounting design and AN-port standard make it compatible with custom fabrication layouts, allowing integration into any engine bay configuration. Weighing just 1.25 lbs and measuring 5.3 x 4.7 x 7.3 inches, it installs easily between the crankcase source and intake system. Whether you're running a high-boost application or upgrading an existing setup, the MOROSO separator tank delivers reliable oil separation and cleaner air delivery.