Mercruiser Impeller

[20pilot]

I have not bought the impeller yet because I am not sure which one I need. However I want to change it as a precautionay. I have a 2008 Mercruiser Horizion 5.7 Serial number 1A09139. Can anyone tell me what impeller is needed. This is a inboard engine. Any help would be greatly appreciated.

Thanks

 

[alldodge]

Re: Mercruiser Impeller

Go here to the top of this section where DonS put all kinds of info to which how to identify what drive you have. Is this a vee drive or an outdrive model Horizon? Have a look through the Merc section and see if it answers your questions, if you have others come on back and let us know.

http://forums.iboats.com/mercruiser...tdrives/adults-only-no-exceptions-288430.html

Note: We would also need an outdrive serial number or type to answer the question

 

[Bt Doctur]

Re: Mercruiser Impeller

serial number not found. Horizon sometimes means inboard not a I/O. All depends on the type of raw water pump that is on the engine.

 

[20pilot]

Re: Mercruiser Impeller

This is a V-Drive Model.

 

[alldodge]

Re: Mercruiser Impeller

This is a V-Drive Model.

I thought that was the case but wanted to check before I responded. The below link is for the entire kit if you have the original brass water pump housing. If you have the plastic housing you would need only the impeller. Only other item which is not usually replaced all the time is the quad ring. All the related Merc and Sierra part numbers are listed.

Water Pump Kit for Mercruiser, GLM 12085 - Sierra 18-3309 - iboats

 

[thumpar]

Re: Mercruiser Impeller

You can switch to the single piece housing if you have the multi-piece housing. It make it easier to change. Next time I do mine I am going to this setup. Stainless Steel "Lifetime" Sea Pump Overhaul Kit - Hardin Marine

 

[alldodge]

Re: Mercruiser Impeller

In all fairness there is also the Merc type
Water Pump Kit for Mercruiser 46-807151A14, GLM 12088 - Sierra 18-3150 - iboats

I really like the Hardin Marine type but you also need to purchase two hose fittings which cost about 25 each, or you need two 3/4 NPT to hose brass fittings. Hardin is a bit pricey but does make a very good one.

 

[thumpar]

Re: Mercruiser Impeller

I have the single piece plastic one on my boat now. It works fine but I have read the horror stories about cracked housings.

 

[alldodge]

Re: Mercruiser Impeller

I have the single piece plastic one on my boat now. It works fine but I have read the horror stories about cracked housings.

It can and does happen, but most all cases it is usually from over torqueing the bolts. I have the plastic on both mine but if ever one needs replacing I'll look real close at the stainless.

 

[Fun Times]

Re: Mercruiser Impeller

I have not bought the impeller yet because I am not sure which one I need. However I want to change it as a precautionay. I have a 2008 Mercruiser Horizion 5.7 Serial number 1A09139. Can anyone tell me what impeller is needed. This is a inboard engine. Any help would be greatly appreciated.

Thanks

Hi there, You may want to double check your engine serial number as 1A09139 is not showing up. You may just have a number out of place somewhere. :noidea:

With the info provided, I was able to track down you engine parts catalog for you.

Here is the parts for your sea water pump impeller, http://www.mercruiserparts.com/Show...=13885&bnbr=210&bdesc=Sea+Water+Pump+Assembly

Your complete listing of parts, http://www.mercruiserparts.com/selectDocs.asp?doc_nbr=884718005