Replacement Impeller with o-ring, Sherwood #9959 (Jabsco #18838-0001)
Item No. 314412
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Replacement Impeller with o-ring, Sherwood #9959 (Jabsco #18838-0001)
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Replacement Impeller with o-ring, Sherwood #9959 (Jabsco #18838-0001)

Replacement Impeller with o-ring, Sherwood #9959 (Jabsco #18838-0001) is rated 4.5 out of 5 by 6.
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Item No. 314412
$37.99 $39.99
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Additional Information
Fits Sherwood aftermarket pump. O-ring included. Composite aluminum, plastic, and cast iron construction of original Mercruiser water pumps does not hold up in marine environments. Now you have the choice to replace the complete pump assembly, the end cover only, or the impeller with a more durable, longer lasting pump.
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  • Fits Sherwood aftermarket pump
  • O-ring included
  • Replacement Impeller with o-ring, Sherwood #9959 (Jabsco #18838-0001) is rated 4.5 out of 5 by 6.
    Rated 5 out of 5 by from Perfect replacement part Needed to replace my water impeller and this part is perfect. Fast delivery, easy process.
    Date published: 2013-07-11
    Rated 5 out of 5 by from Fits and Performs Great This is the correct impeller if you have an 1984 Master Craft Pro star 190, with a Ford 351 Pleasure Craft Marine engine, and a Sherwood raw water pump. I don't know if this info will help anyone else, but it would have helped me very much in trying to decide which impeller to buy. It looked different than the one I removed because of stress and use of the old impeller, but after installing and using the boat for a weekend it worked perfectly. It kept the engine cool, never running hotter than around 170 degrees when idling and around 150 degrees when cruising or towing skiers, wake boarders, and tubes.
    Date published: 2013-07-01
    Rated 4 out of 5 by from Just what I needed The replacement impeller works well. No problems since I put it in.
    Date published: 2010-07-19
    Rated 3 out of 5 by from Not a direct replacement Impeller The Jabsco replacement is similar to the Sherwood dimensional specifications. It is slightly wider because of poor manufacturing in trimming the material off. Jabsco uses a neoprene and the original Sherwood is made of rubber. I don't know which material is better yet. Also, the included o-ring is not the correct size. It is too large. Be sure to save your existing o-ring or be disappointed when you aren't on the lake.
    Date published: 2010-07-13
    Rated 5 out of 5 by from [...] These replacement parts last longer than advertised.[...]
    Date published: 2008-12-17
    Rated 5 out of 5 by from Good product Very good product I replaced the original impeller with this one about 10 years ago so I just bought a spare to have. My boat is a 1984 model and it is getting harder and harder to find parts.
    Date published: 2008-06-22
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    I have a universal Kobota m-20 in my sailboat. Please let me know what impeller to use.

    Asked by: Anonymous
    We would need you to call in and provide us with more technical information to determine if we carry the proper impeller. Please call 1-888-683-7866 and we will be happy to assist you.
    Answered by: Bryant
    Date published: 2015-09-23

    Which impeller do I need for my 2004 350Mag Merc?

    Asked by: joe
    Please call the tech line at 1-888-683-7866 so we can get all the engine information needed to determine which part would work for you engine.
    Answered by: Bryant C
    Date published: 2015-09-23

    I want to know which is the diameter of this impeller, because I need 1" crft.

    Asked by: Anonymous
    If you need an impeller, we would have to have you engine info before we could determine if that would work for you. You can call the Tech department at 1-888-683-7866
    Answered by: Bryant C
    Date published: 2015-09-23

    I need to know which impeller I need for a 88 OMC Cobra 2.3L?

    Asked by: GeminiB
    Item 7001421. This will be a special order, so you will need to call 1-800-334-6541 to order that item.
    Answered by: Matt
    Date published: 2015-09-23

    please tell me what impeller fits a 2001 Malibu Boat with 350 block and merc fuel injection? Thanks

    Asked by: Gerry
    Please contact our tech department. 1-800-334-6541
    Answered by: Casey Marine Buyer
    Date published: 2015-09-23

    does this work on a 1993 ski nautique with a 351 pmc

    Asked by: Anonymous
    If you have the Sherwood RA057007 pump which my 78 351W PCM Ski Nautique has and I believe is stock, this is the one. Might want to call their tech department as well to make sure.
    Answered by: Steve Powell
    Date published: 2015-09-23

    I was wondering when impellar goes bad does it make it hard for pulley to turn?Belt is smokin and squeling.

    Asked by: Chris
    Chris - Definitely verify this with your local marine mechanic but usually a bad impeller will result in a decrease in water flow. The smoking and noisy belt could be a result of a bad pulley bearing or a worn belt.
    Answered by: merchandiser
    Date published: 2015-09-23

    Does this fit a 94 Fourwinns with the 351 Ford OMC?

    Asked by: Gumby
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