Stop wasting money on aftermarket parts that fail. Invest in genuine Mercury Marine quality once – this POPPET VALVE, Spring Length Is 2.00 Inch Component Of Powerhead outlasts cheap alternatives by years.

Engineered to Mercury’s rigorous OEM standards, this seal ensures reliable operation across all engine RPM ranges. Part number 86596 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.

Smart boat owners know: buying cheap parts twice costs more than buying genuine Mercury once. Part 86596 delivers long-term value through superior materials and precision manufacturing.

Compatible Mercury Marine Engines

FITS: 70-402HP MARINER, MERCURY

• Fits MARINER, MERCURY 70-402HP engines
• Compatible HP: 70HP, 75HP, 250HP, 300HP, 402HP
• Covers 24 serial number ranges
• Configurations: Outboard
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

70HP Models

• 70HP OUTBOARD (Mariner): 0A996142-0B240450, 0B240451-0C221999, 9483121-9506480, 9506481-9589038
• 70HP OUTBOARD (Mercury): 0A996142-0B240450, 0B240451-0C221999, 9483121-9506480, 9506481-9589038

75HP Models

• 75HP OUTBOARD (Mariner): 0A996142-0B240450, 0B240451-0C221999, 0C222000-0D283221, 9483121-9506480, 9506481-9589038
• 75HP OUTBOARD (Mercury): 0A996142-0B240450, 0B240451-0C221999, 0C222000-0D283221, 9483121-9506480

250HP Models

• 250HP OUTBOARD (Mariner)
• 250HP OUTBOARD (Mercury)

300HP Models

• 300HP OUTBOARD (Mercury)

402HP Models

• 402HP OUTBOARD (Mercury)

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 86596 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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