Stop fighting with your Mercury engine. This factory-spec GASKET, SPACER PLATE eliminates common issues and delivers the smooth operation you expect from genuine OEM components.

Factory-built to exact Mercury Marine specifications, this gasket ensures reliable operation across all engine RPM ranges. Part number F658803 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.

Why risk your Mercury engine with questionable aftermarket parts? Genuine part F658803 is built to last, backed by Mercury Marine’s decades of marine engineering expertise and proven reliability.

Compatible Mercury Marine Engines

FITS: 120-125HP FORCE, SPORTJET

• Fits FORCE, SPORTJET 120-125HP engines
• Compatible HP: 120HP, 125HP
• Covers 24 serial number ranges
• Configurations: Jet Drive, Outboard
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

120HP Models

• 120HP JET (Sportjet): 0E080400-0E145579, 0E095088-0E141088, 0E145580-0E151579, 0E151580-0E288445, 0E288446-0E344999, 0E141089-0E202999, 0E203000-0E315904, 0E315905-0E341982, 0E345000-0E369299, 0E369300-0E379999, 0E345000-0E369299, 0E369300-0E384499
• 120HP OUTBOARD (Force): 0E000001-0E093699

125HP Models

• 125HP OUTBOARD (Force)

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

Want to verify compatibility for part F658803? 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. Low prices, fast shipping – most orders placed by 1pm ship today.