Keep your Mercury running like new with this genuine PISTON SEAL. Built to the same exacting standards as your original equipment for worry-free boating.

Built with Mercury Marine’s precision engineering, this seal ensures reliable operation across all engine RPM ranges. Part number F449278 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 F449278 is built to last, backed by Mercury Marine’s decades of marine engineering expertise and proven reliability.

Compatible Mercury Marine Engines

FITS: 100-115HP CHRYSLER

• Fits CHRYSLER 100-115HP engines
• Compatible HP: 100HP, 105HP, 115HP
• Covers 24 serial number ranges
• Configurations: Outboard
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

100HP Models

• 100HP OUTBOARD (Chrysler)

105HP Models

• 105HP OUTBOARD (Chrysler)

115HP Models

• 115HP OUTBOARD (Chrysler)

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

Not sure if part F449278 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

40+ years of marine expertise. Discount pricing with expert service – shipping daily.