Water protecting cap for ventilation opening of distributor

In a distributor for an internal combustion engine comprising a casing formed with a ventilation tower formed with a ventilation opening, a water protecting cap for said ventilation opening to prevent entry of water into said casing through said ventilation opening, said cap comprising a crown portion adapted to be fitted onto said ventilation tower to thereby mount said cap on said ventilation tower, the improvement comprising a ventilation passage formed in said cap having an opening communicating with said ventilation opening at said crown portion at one end of said passage and another air entrance opening at the opposite end of said passage, said cap ventilation passage being formed with at least one substantially right angle turn along its length said cap comprising a tongue portion located in spaced relation to said air entrance opening of said passage, said tongue portion and a juxtapositioned portion of said cap defining a space sheltered from water entry into said space, said air entrance opening being located at substantially the innermost portion of said sheltered space, and said tongue being substantially horizontally disposed below said air entrance opening, whereby water splashed upwardly by a vehicle in which said distributor is mounted is deflected away from said sheltered space by said tongue.