Raw water pump

[SeaRenity]

Does anyone know the Mercruiser part number for the raw water pump on a 2005 350Mag horizon. At one pont in time I would like to have a backup complete w/ new impellar that I could just switch out when needed. Does a aftermarket part exist that allows easier replacement on the engine of the impellar?
Thanks
Rich

 

[tbirdvet]

I would love to be able to change the impeller without removing the pump but never have seen this done.

 

[Bob & Sue]

There are a lot of sites you can look up the correct pump for your engine by the mercruiser serial number. I carry a complete pump assembly with serpentine pulley on it ready to install on the boat if one fails on the water it's easier to replace the whole unit. I also carry corks and vice grips to stop the water flow when you pull the inlet hose.