Moroso Harley-Davidson Milwaukee 8/Touring Models (w/Stock Air Cleaner) Air Oil Separator - Polished

The Moroso air-oil separator/catch can system is designed to keep the H-D cylinder head breather system fully functional. It filters out crankcase vapors, oil mist, and condensation that would normally vent to the intake system, thus preventing excessive oil and carbon buildup on the air filter, throttle body, intake, pistons, and valves. Unlike other systems that vent to the atmosphere, this system re-circulates clean, filtered air back into the intake, collecting the separated vapors in a catch can that needs to be drained as a service item. It reduces detonation and knock and helps prevent deposits in the intake tract. The two-piece body unscrews for easy cleaning and service. Available in multiple finish options.