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For use with Mercury/Mariner 9.9-25 hp
Replaces OE No. 11-88228
Sierra Part No. 18-3703
Worn or scored prop nuts can cause damage to your prop shaft and propeller face. Protect your drive system by changing your prop nut when replacing or inspecting your propeller.
Sierra No. 18-3703
For use with Mercury/Mariner: 9.9 - 25 hp, 1986 and up
Replaces No. 11-88228
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