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Genuine Mercury Quicksilver powerhead base gasket for 4–9.8 HP outboards.
Genuine OEM Mercury Quicksilver powerhead-to-adapter plate gasket, part number 27-89937.
This gasket seals between the powerhead and adapter plate and may also be identified in parts catalogs as a powerhead base or bottom-cowl gasket.
APPLICATIONS INCLUDE
• Mercury 4 HP single-cylinder
• Mercury 4.5 HP single-cylinder
• Mercury 7.5 HP
• Mercury 9.8 HP / Merc 110
• Certain earlier Mercury 39 and 40 single-cylinder 27-31557
• 27-30803
• 27-45748
Includes one gasket exactly as pictured. This is not a complete gasket set.
Mercury used different components across model years and serial-number ranges. Please compare the gasket and part number with your original or consult the appropriate parts catalog before purchasing.
