Your Mercury deserves better than cheap aftermarket parts that fail after one season. This genuine SEAL, Oil, BEARING CARRIER (SPRING LOADED) delivers the reliability your engine was built for.

Factory-built to exact Mercury Marine specifications, this seal ensures reliable operation across all engine RPM ranges. Part number 66303 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.

Aftermarket parts might save a few dollars upfront, but genuine Mercury Marine part 66303 saves you money long-term by lasting years instead of months. Factory precision means perfect fit — no modifications, no surprises.

Compatible Mercury Marine Engines

FITS: 200HP MERCURY

• Fits MERCURY 200HP engines
• Compatible HP: 200HP
• Covers 8 serial number ranges
• Configurations: Outboard
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

200HP Models

• 200HP OUTBOARD (Mercury): 3537531-4709592, 7012358-7098522, 8006265-8045198, 9016254-9157229

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 66303 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

Trusted marine parts specialist since 1985. Discount pricing with expert service – shipping daily.