Protect your Mercury investment with genuine OEM parts that last. This O-RING, (1.112 x .103) Part Is New And Listed For The First Time delivers years of reliable service – not just one season like cheap alternatives.

Manufactured to strict Mercury Marine quality standards, this seal ensures reliable operation across all engine RPM ranges. Part number 864701 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 864701 delivers consistent performance because it’s built right — the same way Mercury does it at the factory.

Compatible Mercury Marine Engines

FITS: 102-350HP MERCRUISER, RACE STERNDRIVE

• Fits MERCRUISER, RACE STERNDRIVE 102-350HP engines
• Compatible with 7 different HP configurations
• Covers 24 serial number ranges
• Configurations: Outboard, Sterndrive
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

102HP Models

• 102HP STERNDRIVE (Race Sterndrive)

107HP Models

• 107HP STERNDRIVE (Race Sterndrive): 0M905359-0M957024, 0M957032-0M962885

110HP Models

• 110HP STERNDRIVE (Race Sterndrive)

120HP Models

• 120HP STERNDRIVE (Race Sterndrive): 0M956534-0M962885

135HP Models

• 135HP STERNDRIVE (Race Sterndrive)

165HP Models

• 165HP STERNDRIVE (Race Sterndrive)

350HP Models

• 350HP MAG MPI (Mercruiser): 0W310000-0W649999, 0W650000-1A299999, 1A300000-1A611927, 1A611928-1A623184, 0W390000-0W689999, 0W690000-1A089999
• 350HP OUTBOARD (Mercruiser): 0W310000-0W649999, 0W650000-1A299999, 1A300000-1A611927, 1A611928-1A623184, 1A300000-1A611927, 1A611928-1A623184

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

Want to verify compatibility for part 864701? Use our parts finder tool for instant confirmation. Still have questions? No problem – use the contact buttons at the bottom of this page to reach us by text, call, or email

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