Take control of your Mercury maintenance with this genuine RING SET, Piston (CONTAINS 4 KEYSTONE PISTON RINGS AS SHOWN IN FIGURE #2) COMPONENT OF POWERHEAD/PARTIAL ENGINE. Straightforward replacement that delivers factory results without shop labor costs.

Manufactured to strict Mercury Marine quality standards, this seal ensures reliable operation across all engine RPM ranges. Part number 18514A4 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 18514A4 delivers long-term value through superior materials and precision manufacturing.

Compatible Mercury Marine Engines

FITS: 6-15HP MARINER, MERCURY

• Fits MARINER, MERCURY 6-15HP engines
• Compatible HP: 6HP, 15HP
• Covers 24 serial number ranges
• Configurations: Outboard
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

6HP Models

• 6HP OUTBOARD (Mariner): 0A197112-0D280999, 0D281000-0G760299, 0G760300-0T800999
• 6HP OUTBOARD (Mercury): 0A197112-0D280999, 0D281000-0G760299, 0G760300-0T800999

15HP Models

• 15HP OUTBOARD (Mariner): 0A197112-0D280999, 0D281000-0G760299, 0G760300-0T979999, 0P017000-0P325499, 0T980000-0T999999, 9542620-9792199, 9792200-0P016999
• 15HP OUTBOARD (Mercury): 0A197112-0D280999, 0D281000-0G760299, 0G760300-0T979999, 0P017000-0P325499, 0T980000-0T999999, 9542620-9792199, 9792200-0P016999

Looking for your Mercury engine serial number? Our helpful guide shows you exactly where serial numbers are located on different engines.

Verification & Support

Want to verify compatibility for part 18514A4? 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.