Maintain peak Mercury Marine performance with this factory-engineered FITTING, Male Quick Connector (Threaded). Designed for precision installation and built to handle demanding marine environments season after season.

Manufactured to strict Mercury Marine quality standards, this component ensures reliable operation across all engine RPM ranges. Part number 862603 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 862603 delivers consistent performance because it’s built right — the same way Mercury does it at the factory.

Compatible Mercury Marine Engines

FITS: 3-350HP MERCRUISER

• Fits MERCRUISER 3-350HP engines
• Compatible HP: 3HP, 350HP
• Covers 24 serial number ranges
• Configurations: Outboard
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

3HP Models

• 3HP OUTBOARD (Mercruiser): 0L097000-0W301999, 0W302000-1A0019999, 1A002000-1A020543

350HP Models

• 350HP MAG MPI (Mercruiser): 0M300000-0M599999, 0M600000-0W059999, 0W060000-0W309999, 0W310000-0W649999, 0W650000-1A299999, 1A300000-1A611927, 1A611928-1A623184
• 350HP OUTBOARD (Mercruiser): 0M300000-0M599999, 0M600000-0W059999, 0W060000-0W309999, 0W310000-0W649999, 0W650000-1A299999, 1A300000-1A611927, 1A611928-1A623184, 1A300000-1A611927, 1A611928-1A623184

Don’t know where your serial number is? Our quick reference guide shows exactly where to find it on Mercury Marine engines.

Verification & Support

Double-check compatibility for part 862603 using our parts finder tool. Still need assistance? No worries – contact us via the buttons at the bottom of this page (text, call, or email)

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