Take control of your Mercury maintenance with this genuine NUT, (M5) Stainless Steel. Straightforward replacement that delivers factory results without shop labor costs.

Factory-built to exact Mercury Marine specifications, this component ensures reliable operation across all engine RPM ranges. Part number 401385 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 401385 delivers consistent performance because it’s built right — the same way Mercury does it at the factory.

Compatible Mercury Marine Engines

FITS: 10-15HP MARINER, MERCURY (MAGNUM, MARATHON, SEA PRO)

• Fits MARINER, MERCURY 10-15HP engines
• Compatible HP: 10HP, 13HP, 15HP
• Model types: MAGNUM, MARATHON, SEA PRO
• Covers 24 serial number ranges
• Configurations: Outboard
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

10HP Models

• 10HP MAGNUM (Mariner): 0G760300-0T979999, 0P017000-0P325499
• 10HP MARATHON (Mariner): 0G760300-0T979999, 0P017000-0P325499, 0T980000-0T999999
• 10HP SEA PRO (Mercury): 0G760300-0T979999, 0P017000-0P325499, 0T980000-0T999999
• 10HP VIKING (Mariner): 0P017000-0P325499
• 10HP VIKING (Mercury): 0P017000-0P325499

13HP Models

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

15HP Models

• 15HP OUTBOARD (Mariner): 0G760300-1B226999
• 15HP OUTBOARD (Mercury): 0G760300-1B226999

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

Verification & Support

Questions about part 401385? Use our parts finder tool to verify fitment yourself. Prefer to talk to an expert? Use the contact buttons at the bottom of this page to reach our team by text, call, or email

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