Sierra Thrust Washer for Mercury/Mariner, Sierra #18-4220
Item No. 314206
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Sierra Thrust Washer for Mercury/Mariner, Sierra #18-4220
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Sierra Thrust Washer for Mercury/Mariner, Sierra #18-4220

Sierra Thrust Washer for Mercury/Mariner, Sierra #18-4220 is rated 4.4 out of 5 by 7.
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Item No. 314206
$20.89 $21.99
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In Stock

Additional Information
Worn or scored thrust washers and prop nuts can cause damage to your prop shaft and propeller face. Protect your drive system by changing your thrust washer and prop nut when replacing or inspecting your propeller.

Fits Mercury/Mariner: 40-60 hp BigFoot 4-Stroke; 75-125 hp 2-cycle & 4-Stroke; 135-275 hp 2-cycle.
Fits Force: 75 hp ('99); 90-150 hp ('95 and newer)
Fits MerCruiser Alpha and Bravo I sterndrives

Replaces
GLM 21300
Mercruiser 77987A1, 13171, 12-835467, 12-8354671, 12-835467Q01
Mercury 77987, 12-8354671, 12-835467, 13171, 77987A1

Sierra Part No. 18-4220
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  • For use with Mercury/Mariner
  • For use with Mercruiser Alpha & Bravo I
  • For use with Force 90-150 hp ('95 up)
  • Sierra Part No. 18-4220
  • Sierra Thrust Washer for Mercury/Mariner, Sierra #18-4220 is rated 4.4 out of 5 by 7.
    Rated 1 out of 5 by from Not for Mercruiser Bravo 2 Parts might be fine for other units listed, but they do not fit the Bravo 2 sterndrive; they are too small. Vendor should research and revise stated applications. Otherwise, quality and condition looked adequate.
    Date published: 2017-09-21
    Rated 5 out of 5 by from It is the third one I baught. Without it you will destroy the propeller and the bottom of alpha one.
    Date published: 2013-06-28
    Rated 5 out of 5 by from Correct part! Perfect Match! Great product. Exact replacement part.
    Date published: 2012-09-04
    Rated 5 out of 5 by from Simple but effective Easy to install.
    Date published: 2011-06-09
    Rated 5 out of 5 by from exact fit Boating
    Date published: 2010-06-15
    Rated 5 out of 5 by from High quality Thrust Washer Use this for the common denominator being the prevention of wear for more expensive parts.
    Date published: 2009-10-02
    Rated 5 out of 5 by from Thrust washer - Mercruiser Couldn't do without it!
    Date published: 2009-07-16
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    What are the dimensions of this? My old one is too thick for my new propeller. The lock nut does not go down all the way on the prop to lock it on.

    Asked by: Tim 59
    Per the manufacturer "Overall thickness is 0.438”, the larger step thickness is 0.225” and the top step is 0.213”."
    Answered by: Amanda
    Date published: 2017-08-18
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