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Optimax 150 - which water pump?

leaky

Regular Contributor
Hi,

I've got a set of 150's (vintage ~2006), the serial on one is 1b379753.. I'm getting organized this season and I figured I'd order the parts online beforehand instead of running into the dealership last minute when I have an overheat alarm ;)..

What I'm a little confused about is I see there are at least 2 pump kits merc sells for these, and possibly 2 impellers (maybe that's why the two kits).

There is kit
"46-96148T 8", kit "46-96148A 8", impeller "89984T 3" and impeller "89984T 4" (I think one is fiberglass insert and one brass maybe).. Also have heard folks reference a "heavy duty" versus regular impeller before for the opti's - any idea what that's all about?
Whatever the toughest possible thing I can put in there - that's what I'd like, as these engines seem to run on the hairy edge and basically require an impeller change every season. What part is it that I should be buying?

Thanks in advance!

Jon
 
I think the 1st kit is the latest model, T vs. A. Pick one. Stay away from the of the aftermarket kits.
 
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