Change your Marine Power (Jabsco) Impeller

[culrich77]

https://marineenginedepot.com/johnso...-812b-impeller

I reached out to MP, great guys willing to help.literally ANY question you have. They told me, for my 08 340hp MP, it was a Johnson. I emailed them and told them the engine, which brand boat it was in and the serial number and they were able to help me.put a list of part together for my engine.

Hope that helps.

Yep got down there tonight and looked at the plate and it states that it's a Johnson pump, ordered 2 off Overtons with a 30% discount code for 60 bucks with shipping, and the access isn't awful pretty sure it shouldn't be too bad, I hope!!

[dj2]

https://www.amazon.com/gp/aw/d/B013H...?ie=UTF8&psc=1

This is the one I have been using. $26 and free shipping

[culrich77]

Got the impeller changed, don't know how I would have done it without the puller tool, took a total of 15 minutes, super easy, thanks for the help!!

[14burrito]

35% off at Overtons right now, going to snag a few impellers

[adsprog03]

My new impeller did not come with any lube... Any suggestions? I plan on doing it tonight and hope I can use something I have around the garage or house.

[lee]

Use some liquid dish soap

[JaredAC79]

New boat owner here, trying to learn all the things.
Is there a difference in the quality of the Jabsco impeller versus the Johnson 812-B?

[lee]

They are different sizes.

[JaredAC79]

Hi Lee,
The boat that I purchased has the Jabsco impeller installed, but the previous owner left the old impeller in the boat as a spare. The old impeller is the Johnson. If they are different sizes, will the jabsco cause any damage?

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[lee]

You would need to look at the pump and see what pump you have.

[JaredAC79]

Thanks. I believe it's a Johnson Pump. The boat is a 2007 20i, with the 5.7 marine power vortec.

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[lee]

If it is a Johnson Pump you would want the Johnson 09-812B-1 impeller.

[Fingerlakelife]

If it is a Johnson Pump you would want the Johnson 09-812B-1 impeller.

Hi all,
Not that anyone else might not know but I'll direct my inquiry toward Lee as he is a guru.
I have a 04 22V with the MP engine. Got the impeller out (elbow grease and needle nose pliers) and the new one in. Went to put the new gasket on that came with the impeller. The problem is: the holes and general circumference of the new gasket (kinda of paper-ish) does not match the template/ housing cover. So, I was lucky/smart enough to keep the old gasket (cloth like material) and I gingerly put that one back on the housing and closed it up. I have not tested it for leaks yet (still in the driveway) however, what do you suggest for a new gasket if I do need one? I'll need one at some point anyways so thought I'd ask before I get stuck looking for one.

[lee]

Did you buy the Johnson impeller or off brand. The Johnson would have had a white foam gasket for you to use. Some of the 2004 & 2005 had the Jabsco pumps, looks the same but the impeller is slightly bigger. Look at the impeller cover for branding.

[Fingerlakelife]

Did you buy the Johnson impeller or off brand. The Johnson would have had a white foam gasket for you to use. Some of the 2004 & 2005 had the Jabsco pumps, looks the same but the impeller is slightly bigger. Look at the impeller cover for branding.

I got the Jabsco impeller from Amazon (Jabsco 18777-0001-P, Neoprene, Drive Type 7, 10 Blade, 2-1/4 Diameter, 2 Width, 5/8 Shaft, Brass Insert) and the housing is Jabsco but for some reason that gasket doesn't align with cover housing.