Is this the impeller/base/cover combination for Merc 115?

[MiBad]

I have a problem getting any water out of the tell-tale of a '91 Merc 115. Can anyone tell if the three attached pictures are everything needed for my water pump? I ask because I bought the motor used 3 years ago, replaced the impeller and possibly the housing and gasket/plate after purchase, then replaced only the impeller this season. I do not know if prior to my purchase the water pump or base parts could have been replaced with after market (Sierra) parts or if that would make any difference. I seem to remember that when I replaced the impeller/housing 3 years ago that the dealer mentioned that it was a new revised type but I am not sure. When I look at the parts list it does not look like what I have.,,Thanks in advance.
NOTE: I am having problems uploading all 3 attachments at once so I might have to upload one attachment to three separate posts. Sorry for my inexperience with this forum.

 

[MiBad]

I am adding the three pictures that I took of my water pump housing impeller and base.






I don't know if you can tell anything from these photos, but I am trying to determine if I have all the correct parts in the water pump. I read that there are multiple styles for this motor...thanks.

 

[MiBad]

I wanted to update this since problem is now fixed. The parts in the pictures above are correct; I verified with an unused Merc water pump kit. The reason I was asking was because I bought the motor used and I did not know the history of the water pump - could have been after market parts that were non compatible. My problem was the fact that the Merc dealer that I bought a water pump tube seal gave me the wrong part. The '91 Merc 115 HP uses part number 43023. The part he gave me seemed to be a snug enough fit, but apparently did not seal the water pump to tube connection. I get 8, pounds of pressure now on muffs with the correct.from