Take control of your Mercury maintenance with this genuine DIAPHRAGM ASSEMBLY. Straightforward replacement that delivers factory results without shop labor costs.

Engineered to Mercury’s rigorous OEM standards, this component ensures reliable operation across all engine RPM ranges. Part number 804533 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 804533 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, SPORTJET

• Fits MARINER, MERCURY, RACE OUTBOARD, SPORTJET 2-200HP engines
• Compatible HP: 2HP, 110HP, 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)

150HP Models

• 150HP OUTBOARD (Mercury)

175HP Models

• 175HP PROXS (Mercury)

200HP Models

• 200HP DFI JET DRIVE (Sportjet): 0E384500-0E435741
• 200HP OUTBOARD (Mariner): 0G760300-0G960499, 0G960500-0T178499, 0T178500-0T598999, 0T599000-0T800999, 0T801000-1B417701, 1B417702-1B504988, 1B504989-1B912785
• 200HP OUTBOARD (Mercury): 0T980000-1B417701, 1B417702-1B504988, 0G760300-0G960499, 0G960500-0T178499, 0T178500-0T598999, 0T599000-0T800999, 0T801000-1B417701, 1B417702-1B504988, 1B504989-1B912785

Not sure where to find your engine’s serial number? View our quick reference guide to locate it on your Mercury Marine engine.

Verification & Support

Not sure if part 804533 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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