Restore factory performance to your Mercury engine with this OEM GASKET, WATER PUMP TO GEAR HOUSING 13,8,11. Engineered to exact specifications for reliable operation in fresh and saltwater conditions.

Manufactured to strict Mercury Marine quality standards, this pump ensures reliable operation across all engine RPM ranges. Part number 856704 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 856704 delivers long-term value through superior materials and precision manufacturing.

Compatible Mercury Marine Engines

FITS:

• Compatible with Mercury Marine engines
• OEM genuine Mercury part

COMPLETE SERIAL NUMBER COMPATIBILITY:

HP Models

• HP OUTBOARD (Mercruiser): 6216687-0D469858
• HP STERNDRIVE (Mercruiser): 6225577-0D469858

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

Want to verify compatibility for part 856704? Use our parts finder tool for instant confirmation. Still have questions? No problem – use the contact buttons at the bottom of this page to reach us by text, call, or email

Four decades of marine parts experience. Competitive pricing, same-day shipping on most orders.