Maintain peak Mercury Marine performance with this factory-engineered CHECK VALVE COMPONENT OF POWERHEAD/PARTIAL ENGINE [809794A97][804799A00][804800A00]. Designed for precision installation and built to handle demanding marine environments season after season.

Built with Mercury Marine’s precision engineering, this component ensures reliable operation across all engine RPM ranges. Part number 8781051 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.

Cut-rate alternatives might look similar, but they’re not engineered to Mercury’s exacting standards. Part 8781051 delivers consistent performance because it’s built right — the same way Mercury does it at the factory.

Compatible Mercury Marine Engines

FITS: 2-200HP MARINER, MERCURY, RACE OUTBOARD

• Fits MARINER, MERCURY, RACE OUTBOARD 2-200HP engines
• Compatible HP: 2HP, 110HP, 140HP, 150HP, 175HP, 200HP
• Covers 24 serial number ranges
• Configurations: Jet Drive, Outboard
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

2HP Models

• 2HP OUTBOARD (Race Outboard): 0T997974-1E000796

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 OUTBOARD (Mariner): 0T750164-0T800999, 0T801000-1B417701, 0T599000-0T800999, 0T801000-1B417701, 1B417702-1B504988, 1B504989-1B912785
• 200HP OUTBOARD (Mercury): 0T980000-1B417701, 1B417702-1B504988, 0T750164-0T800999, 0T801000-1B417701, 1B417702-1B504988, 0T599000-0T800999, 0T801000-1B417701, 1B417702-1B504988, 1B504989-1B912785

Need help finding your serial number? Check our serial number location guide for step-by-step instructions on locating it on your Mercury engine.

Verification & Support

Not sure if part 8781051 fits your engine? Try our parts finder tool — it’s quick and easy. Need expert help? Contact us using the buttons at the bottom of this page – text, call, or email, whatever works best for you

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