Air/Oil Separator H/D Milwaukee 8 Tour Models

The Air/Oil Separator H/D Milwaukee 8 Tour Models by MOROSO is a purpose-built crankcase ventilation solution engineered for modern Harley-Davidson Milwaukee 8 engine platforms. This separator removes oil mist and moisture from crankcase vapors before they re-enter the intake system, preventing carbon buildup, oil degradation, and performance loss. Riders and builders specify air-oil separators on turbocharged, high-output, or extended-duty Milwaukee 8 models where aggressive ventilation demands exceed factory capability.

This unit features a 2.25-inch diameter aluminum canister with black anodized finish, measuring 3.63 inches in height and weighing just 2.1 pounds for minimal packaging impact. Twin 3/8-inch hose barb inlets and outlets accommodate standard crankcase breather tubing, while the screw-on canister design allows tool-free service and oil drainage. The separator works passively: incoming vapor enters the primary chamber where centrifugal and baffle forces cause suspended oil droplets to coalesce and drain back to the engine, while clean vapor exits through the outlet—no electrical components, no moving parts, no maintenance beyond periodic canister inspection.

Milwaukee 8 Tour Model owners benefit from reduced intake valve and fuel injector carbon deposits, improved throttle response, and extended oil life. Installation requires routing factory or aftermarket breather lines to the inlet barb and directing the outlet hose back to a sealed catch tank or the intake manifold. Kit includes all fittings and hose needed for quick integration into existing or custom air systems. This separator is ideal for riders running stage upgrades, extended highway mileage, or high-ambient-temperature conditions where standard ventilation proves insufficient.