One way reed valve breather
Eliminates positive case pressure and oil leaks. Easy installation with no modifications or machining necessary. Fits 750 left side case breather vent, 850 timing case, Combat or Maney case lower sump mount and all front Tac mounts. Also fits the MK3 elect start timing case with the shorter aftermarket starter (contact us when ordering for the original prestolite starter) (more info).