Mercruiser Brass Sea Pump Impeller Rebuild Kit Install - Aftermarket Marine

Rebuild that Mercruiser brass sea pump with new stainless steel end plates an a custom impeller from Aftermarket Marine. This particular pump is from a 496, but many late model Generation 7 Mercruisers use these brass housing pumps now. Link to purchase this kit here: amarketparts.com/products/496

[@mikedodd9294]

spray soapy water into housing, then insert the impeller after zip tying it with the blades squished, slides right in, then once all the way in cut the zip tie off and it will expand perfectly. Takes about 10 seconds no fuss.

[@MrIntored]

Good idea

[@SkypowerwithKarl]

You didn’t mention what lube you used. Some use dish soap but the ultimate is silicone grease. Avoid any petroleum based lube as this causes the impeller to soften and swell that can be real bad if it’s not ran immediately so the water can clean it away.

[@rickasbury1688]

This company is not on Lind any longer and I'm searching for a replacement for mine.m

[@kylestinson8658]

I have the 496 and was wanting to change the impellar myself. Do you have to remove the belt and the whole assembly like you did in the video, or can you leave majority of the assembly attached to the engine?

[@MrIntored]

In a twin engine set up, there really isn't room to install them without removal. Its probably easier to do outside the boat anyways, hardest part is removing the hoses from the painted housing.

[@area52a]

Here is a link that works. This kit also uses stock impeller. metalartetc.com/epages/3491964f-553f-4c10-8659-1241e68dccdb.sf/en_US/?ObjectPath=/Shops/3491964f-553f-4c10-8659-1241e68dccdb/Products/SSWP

[@seanh5360]

Has this repair kit been a successful upgrade? Thinking about the same one! Thanks

[@MrIntored]

I ran a couple of seasons with the replacement parts without any issue

[@ainstaink8312]

Great video! My mercruiser 350 has brass pump but it has a wear plate that is replaceable on one side...but nothing on the other side...deep down in the housing. I just changed my impeller and noticed the bottom of the housing has groves...so I might be getting something like this as well...shame on Mercury..they could have done a better job. Poor engineering... Have you looked into stainless steel pumps manufactured by Hardin Marine? They are a bit expensive...just wondering what the life expectancy of one is...and is it worth.

[@MrIntored]

I have friends that use Hardin with mixed results...brass is soft, but so is stainless (just not as soft)...one look at used stainless wear plates will tell you this. I'll just keep replacing impellers and wear plates as needed over replacing stainless housings when they develop grooves too.

[@fadedexile]

This kit is crap. Why in the world would someone put a smaller impeller that pumped less water on their engine? Recently saw one of these with an impeller that fell apart after 20 minutes use. What a joke. Use genuine Mercruiser parts on your Mercruiser!

[@MrIntored]

I've used this kit for years on multiple motors without an issue. Loosing .031" of chamber length is insignificant compared to the loses from regurgitation associated with worn brass housing ends.

[@SkypowerwithKarl]

Nothing wrong with this kit unless the spacer wasn’t down all the way. This video shows how to check that.