Maintain peak Mercury Marine performance with this factory-engineered **BEARING, Roller**. Designed for precision installation and built to handle demanding marine environments season after season.

Built to Mercury’s exacting factory standards, this bearing ensures reliable operation across all engine RPM ranges. Part number 21739 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.

Factory parts exist for a reason – they work. Part 21739 undergoes rigorous Mercury Marine quality testing that aftermarket manufacturers skip. The result? Reliable performance season after season.

FITS: 13-18HP MARINER, MERCURY (SEA PRO)

• Fits MARINER, MERCURY 13-18HP engines
• Compatible HP: 13HP, 15HP, 18HP
• Model types: SEA PRO
• Covers 24 serial number ranges
• Configurations: Outboard
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

13HP Models

• 13HP OUTBOARD (Mariner): 0P134638-0P400999
• 13HP OUTBOARD (Mercury): 0P134638-0P400999

15HP Models

• 15HP MARATHON XD (Mariner): 0P017000-0P325499, 9927000-0P016999
• 15HP OUTBOARD (Mariner): 0G590000-0G760299, 0G760300-1B226999, 0P075166-0P400999, 1B227000-1B727495, 9973100-0P016999
• 15HP OUTBOARD (Mercury): 0G590000-0G760299, 0G760300-1B226999, 0P075166-0P400999, 1B227000-1B727495, 9973100-0P016999
• 15HP SEA PRO (Mercury): 0P017000-0P325499, 9927000-0P016999

18HP Models

• 18HP OUTBOARD (Mercury): 5837437-6416712, 6416713-6443972, 7173723-7207857, 7207858-7209532

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

Double-check compatibility for part 21739 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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