One way case reed valve breather


Eliminates positive case pressure and oil leaks. Easy installation with no modifications or machining necessary. Fits 750 left side case cam breather vent, MK2 850 timing case, Combat or aftermarket lower left case mount. MK3 elect start timing case with the original Prestolite or aftermarket starter (1/2″ hose barb is for Mk3 only)(more info).

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