potis
Active Member
Does anyone know if the impellers for 2003 8.1L Mercruiser Horizon engines are the same as for a 2000 7.4L MPI. I was told they are, but when I go to Mercruiser website they show different part numbers.
For the 8.1L it shows PN: 47-862232a2 (Sierra match is 18-3016-1)
For the 7.4L it shows 47-59362 (Sierra match 18-3087)
I am asking because I have several of the ones for the 7.4L from my previous boat. I am looking to change mine on my current boat which has the 8.1Ls. Don't want to go buy more if the ones I have will work. I realize that when I get the existing ones off, I should be able to tell if they match or not, but I want to be prepared with correct parts to minimize down time.
For the 8.1L it shows PN: 47-862232a2 (Sierra match is 18-3016-1)
For the 7.4L it shows 47-59362 (Sierra match 18-3087)
I am asking because I have several of the ones for the 7.4L from my previous boat. I am looking to change mine on my current boat which has the 8.1Ls. Don't want to go buy more if the ones I have will work. I realize that when I get the existing ones off, I should be able to tell if they match or not, but I want to be prepared with correct parts to minimize down time.