Sierra 18-3723-9 Stainless Steel Propeller Lock Nut
Price: $12.99
Save: $4.46
(25% Off $17.45)
Part # 18-3723-9
2nd Day Air for $2.99 More Eligible
SHIPS TOMORROW!* if ordered in 13 hrs 18 mins.
This item is found in the following Product Families
Replaces OEM part #
  • MERCURY MARINE 11-45592
  • MERCURY MARINE 11-826709111
  • MERCURY MARINE 11-20102


  • Package of 5
  • Thread Size 5/16" - 24
  • Material: Stainless Steel

For: Mercruiser 11-45592, Mercury, Mariner, GLM 21190

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Not what I expected
by John from Bolling AFB, Washington, D.C. on October 13, 2015
This is not what I expected. Given I didn't do the research before buying but the ad didn't have pictures.
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Will NOT fit Yamaha 40hp, 2002 vintage
by John from Norwich, Connecticut on June 24, 2013
Will NOT fit Yamaha 40hp, 2002 vintage motor, as listed.
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