Left side 750 case cam vent, lower rear 1973 750, Combat & all 850 timing side style reed valve breathers

Eliminates positive case pressure and oil leaks. Easy installation with no modifications or machining necessary. Fits 750 left side case cam breather vent, 1973 750 & Combat, aftermarket lower left case mount, MK2 850 timing case, MK3 elect start timing case with the original Prestolite or aftermarket starter (1/2″ hose barb is for Mk3 only) Run hose back to oil tank (more info).