Don’t gamble with your Mercury’s reliability. This genuine HARMONIC BALANCER (Use 3/8-24 Bolts) ensures long-term performance and protects your investment in quality marine power.

Factory-built to exact Mercury Marine specifications, this component ensures reliable operation across all engine RPM ranges. Part number 816729 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 816729 delivers long-term value through superior materials and precision manufacturing.

Compatible Mercury Marine Engines

FITS: 7HP MERCRUISER

• Fits MERCRUISER 7HP engines
• Compatible HP: 7HP
• Covers 2 serial number ranges
• Configurations: Outboard
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

7HP Models

• 7HP OUTBOARD (Mercruiser): 0B771113-0D603117, 0C391564-0D715493

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 816729? 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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