Re: upper seal kit
Thanks for your reply. This is for a 1990 Merc 350 260hp with a Alpha one gen one. I was told gen one because it has the plastic water pump housing not metal.
That's what I thought the two plastic ones were for the drain and vent! great thank you.
The square one is for the oil passage between the upper and lower! got it.
Could the other one be for the water pump housing for the plastic tube? I did replace one that looked very close to it in the plastic housing for the copper tube in the upper?
Thanks again for your help. this site is great.
Erik