Mini starter

`If it were me I would seal the hole facing up. I agree with you that it would collect moisture and road dirt. I wouldn't drill a hole in the other side unless your planing on driving trough flooded deep muddy water.
Thanks, i wasn't sure if it was a drain hole or a vent or both, the motor housing has the drain tube so atleast it can still drain if any water ingress happens, its strange they put the two holes apposed on the one unit, the black starter has both holes to the bottom.