Re: Mercruiser 4.3 Seawater Pump
1st of all 300.00 is a major rip off.
I think you are completely wrong in that assumption.
He didn't take it in saying "Install a new impeller" he took the boat in with an overheat problem. That means the shop has to get the boat to a repair station, run it to see what is actually happening. Then pull the drive, take apart, and find that the impeller is bad. Then you have to get the parts and put it all back together. Then do another test run to see if it overheats or not.
Personally, while a DIYer may find some aftermarket impeller, most Merc dealers will sell the impeller kit (yea, it takes gaskets and seals to do it right) and that kit costs more than 20 bucks. Then you have to refill the drive with gear lube, and new gaskets. Then the $8 gasket kit to put the drive back on the boat.
See, all kinds of hidden costs you didn't even think about in your DIY world.
Then the shop has to clean the boat and make everything perfectly clean and the way it was or the customer gets all upset if there is a finger print some where.
$300 sounds about normal to me.