Don’t gamble with your Mercury’s reliability. This genuine GASKET, Elbow (Closed Cooling) ensures long-term performance and protects your investment in quality marine power.

Manufactured to strict Mercury Marine quality standards, this gasket ensures reliable operation across all engine RPM ranges. Part number 863726 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 863726 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: 4-454HP MERCRUISER

• Fits MERCRUISER 4-454HP engines
• Compatible HP: 4HP, 5HP, 350HP, 357HP, 383HP, 454HP
• Covers 24 serial number ranges
• Configurations: Outboard
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

4HP Models

• 4HP OUTBOARD (Mercruiser): 0L010044-0M614999, 0L619000-0M322780, 0M300000-0M614999, 0L010044-0M614999

5HP Models

• 5HP OUTBOARD (Mercruiser): 0L015751-0M599999, 0L331631-0M299999, 0M300000-0M599999, 0L010037-0M599999, 0L002003-OM316999

350HP Models

• 350HP MAG MPI (Mercruiser): 0M300000-0M599999, 0L302200-0M299999, 0M310000-0M316999
• 350HP MAG MPI MIE (Mercruiser): 0L302200-0M299999, 0M310000-0M316999
• 350HP OUTBOARD (Mercruiser): 0L331599-0M299999, 0M300000-0M599999

357HP Models

• 357HP OUTBOARD (Mercruiser)

383HP Models

• 383HP OUTBOARD (Mercruiser)

454HP Models

• 454HP MAG MPI BRAVO (Mercruiser): 0L010029-0L058399
• 454HP OUTBOARD (Mercruiser): 0L085400-0M024999, 0L002200-0L086049, 0L086050-0L674000

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

Double-check compatibility for part 863726 using our parts finder tool. Still need assistance? No worries – contact us via the buttons at the bottom of this page (text, call, or email)

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