The Prova Subaru Air Oil Separator is a great alternative to traditional oil catch cans and can significantly reduce unwanted oil in the intake system. By reducing the amount of oil that enters the intake, you are able to keep the motor much cleaner with out any of the draw backs that are associated with traditional oil catch cans. This is a direct factory bolt on item, requiring minor modifications to the OEM PCV system.
Fits: - Legacy BL/BP - Impreza GR/GH - Impreza GD/GG - Forester SG *vehicles with oil filler duct only
