Why pay dealer markup? Get genuine Mercury Marine quality at discount pricing. This NUT, GEAR HOUSING delivers OEM reliability with savings up to 20% below retail.

Engineered to Mercury’s rigorous OEM standards, this housing assembly ensures reliable operation across all engine RPM ranges. Part number 87763 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 87763 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: 30-402HP MARINER, MERCURY

• Fits MARINER, MERCURY 30-402HP engines
• Compatible HP: 30HP, 35HP, 40HP, 45HP, 402HP
• Covers 24 serial number ranges
• Configurations: Jet Drive, Outboard
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

30HP Models

• 30HP JET (Mariner): 0C159200-0G589999
• 30HP JET (Mercury): 0C159200-0G589999

35HP Models

• 35HP OUTBOARD (Mercury): 6445653-0B110788

40HP Models

• 40HP OUTBOARD (Mariner)
• 40HP OUTBOARD (Mercury)

45HP Models

• 45HP OUTBOARD (Mariner): 5531630-0B110788, 7143688-0A719280
• 45HP OUTBOARD (Mercury): 5531630-0B110788

402HP Models

• 402HP OUTBOARD (Mercury)

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

Not sure if part 87763 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. Great prices, quick delivery – your parts ship fast.