I'm replacing my water pump impeller ('77 35 hp) and am having trouble matching impeller to housing. The number on the housing is 323941, which I cannot find anywhere in BRP. BRP has the impeller #319578, but the impeller is too large for the housing I have that came with the kit I changed last winter. (That impeller failed when I took the boat out.) I saw another post that adressed the same thing, and someone mentioned there were three impellers, one of which 18-5031, looks like the one that came with the kit. However, that original OEM number is to a differerent model altogether.
Could it be that the shop I got the kit from in the first place sold me a kit for the wrong model in the first place?