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The Breathers inside a small engine act as a ventilation system for the combustion gases. They also function to relieve pressure in the crankcase. The breather filter allows air to flow into the breather tube. The breather tube directs the fresh air into the crankcase. If your engine is having performance issues, check the breather assembly, breather filter, and breather tube first. A clogged or worn out breather tube can lead to a blown seal or gasket. For breather system maintenance, Jack's has all the parts you need. Some of our featured manufacturers include Briggs and Stratton, Honda, Kawasaki, Kohler, and Tecumseh. Select your replacement engine breathers below. Find more engine parts in our small engine parts section.