Air/Oil Separator Tank 2-Breathers / 2 16an Fem

The Air/Oil Separator Tank 2-Breathers / 2 16AN Fem by MOROSO is engineered for serious engine builders and performance enthusiasts who demand precision crankcase ventilation management. This separator addresses a critical need in modified and turbocharged engines: preventing oil carryover into the intake system while maintaining proper crankcase pressure relief. Whether you're running a high-horsepower street engine, a dedicated track build, or a forced-induction platform, an efficient air/oil separator protects fuel economy, keeps intake valves clean, and prevents oil from contaminating intercoolers and charge pipes.

This MOROSO unit features dual breather inlets and two 16AN female AN ports, allowing flexible plumbing configurations for both positive and negative crankcase ventilation circuits. The internal baffle design separates entrained oil mist and liquid from crankcase gases, directing separated oil back to the pan while venting clean air to atmosphere or closed-loop recovery systems. The compact footprint (10 x 7.3 x 12 inches) and manageable 5.585-pound weight make integration straightforward on most engine bays, while the aluminum construction ensures durability and thermal stability under sustained boost or high-RPM operation. The dual 16AN female ports accept standard aftermarket fittings, hoses, and adapters, enabling integration with custom manifold breather systems, PCV bypass loops, and turbo compressor inlet management.

This separator is ideal for LS, small-block, big-block, and modern engine platforms running aggressive cam profiles, boost, or nitrous oxide systems where factory PCV capacity falls short. It's equally valuable for circle-track, drag racing, and road course applications where oil aeration and ring flutter must be minimized. Installation requires routing breather lines from the valve covers (or custom manifolds) into the separator's dual inlets, then directing the separated oil return line to the crankcase and the vent outlet to a catch can, atmosphere, or closed recovery system. Verify 16AN hose and fitting compatibility with your plumbing plan, and ensure adequate clearance for the separator's overall dimensions before final mounting.