Experiencing engine hesitation or reduced power? This authentic Mercury Marine BEARING-Towershaft solves the problem with factory precision – no guessing, no compromises.

Manufactured to strict Mercury Marine quality standards, this seal ensures reliable operation across all engine RPM ranges. Part number 816957 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 816957 delivers long-term value through superior materials and precision manufacturing.

Compatible Mercury Marine Engines

FITS: 40-50HP FORCE

• Fits FORCE 40-50HP engines
• Compatible HP: 40HP, 50HP
• Covers 13 serial number ranges
• Configurations: Outboard
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

40HP Models

• 40HP OUTBOARD (Force): 0E000001-0E093699, 0E093700-0E138599, 0E138600-0E202999, 0E203000-0E287999, 0E288000-0E344999, 0E345000-0E369299

50HP Models

• 50HP OUTBOARD (Force): 0E000001-0E093699, 0E093700-0E138599, 0E138600-0E202999, 0E203000-0E287999, 0E288000-0E344999, 0E345000-0E369299

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 816957 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

Trusted marine parts specialist since 1985. Competitive pricing, same-day shipping on most orders.