Restore factory performance to your Mercury engine with this OEM GASKET 2,5COMPONENT OF ENGINE/POWERHEAD GASKET SET [27-814754A00] :OMPONENT OF POWERHEAD/PARTIAL ENGINE [61-8M0060220]. Engineered to exact specifications for reliable operation in fresh and saltwater conditions.

Factory-built to exact Mercury Marine specifications, this gasket ensures reliable operation across all engine RPM ranges. Part number 78690002 is manufactured to exact Mercury Marine factory specifications for precision installation and optimal performance. Constructed from premium marine-grade materials designed to withstand harsh saltwater and freshwater environments.

Factory parts exist for a reason — they work. Part 78690002 undergoes rigorous Mercury Marine quality testing that aftermarket manufacturers skip. The result? Reliable performance season after season.

Compatible Mercury Marine Engines

FITS: 110-225HP MARINER, MERCURY, RACE OUTBOARD, SPORTJET

• Fits MARINER, MERCURY, RACE OUTBOARD, SPORTJET 110-225HP engines
• Compatible HP: 110HP, 140HP, 150HP, 175HP, 200HP, 225HP
• Covers 24 serial number ranges
• Configurations: Jet Drive, Outboard
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

110HP Models

• 110HP JET (Mercury)

140HP Models

• 140HP JET (Mariner): 0G960500-0T178499
• 140HP JET (Mercury): 0G960500-0T178499

150HP Models

• 150HP OUTBOARD (Mercury)

175HP Models

• 175HP PROXS (Mercury)

200HP Models

• 200HP DFI JET DRIVE (Sportjet)
• 200HP JET (Sportjet)
• 200HP OUTBOARD (Race Outboard): 0T818181-1E000796, 1E000797-1E002110

225HP Models

• 225HP OUTBOARD (Race Outboard): 0T430254-0T819605

HP Models

• HP OUTBOARD (Mariner): 0G960500-1B226999, 0G960500-0T178499, 0T801000-1B226999, 1B227000-1B417701, 0T178500-1B226999
• HP OUTBOARD (Mercury): 0G960500-0T178499, 0T801000-1B226999, 1B227000-1B417701

Looking for your Mercury engine serial number? Our helpful guide shows you exactly where serial numbers are located on different engines.

Verification & Support

Questions about part 78690002? Use our parts finder tool to verify fitment yourself. Prefer to talk to an expert? Use the contact buttons at the bottom of this page to reach our team by text, call, or email

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