Maintain peak Mercury Marine performance with this factory-engineered GASKET. Designed for precision installation and built to handle demanding marine environments season after season.

Engineered to Mercury’s rigorous OEM standards, this gasket ensures reliable operation across all engine RPM ranges. Part number 91754 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 91754 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: 25-40HP MARINER, MERCURY (EFI)

• Fits MARINER, MERCURY 25-40HP engines
• Compatible HP: 25HP, 30HP, 40HP
• Model types: EFI
• Covers 24 serial number ranges
• Configurations: Outboard
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

25HP Models

• 25HP OUTBOARD (Mariner): 0P153500-0P388282, 0T409000-1B344298
• 25HP OUTBOARD (Mercury): 0P153500-0P388282, 0T409000-1B344298

30HP Models

• 30HP EFI (Mariner): 0P153500-0P400999, 0T409000-1B226999
• 30HP EFI (Mercury): 0P153500-0P400999, 0T409000-1B226999
• 30HP OUTBOARD (Mariner): 0P153500-0P400999, 0T409000-1B226999
• 30HP OUTBOARD (Mercury): 0P153500-0P400999, 0T409000-1B226999

40HP Models

• 40HP EFI (Mariner): 0P153500-0P400999, 0T409000-1B226999, 1B227000-1B344398, 0P153500-0P400999
• 40HP EFI (Mercury): 0P153500-0P400999, 0T409000-1B226999, 1B227000-1B344398, 0P153500-0P400999
• 40HP OUTBOARD (Mariner): 0P153500-0P400999, 0T409000-1B226999
• 40HP OUTBOARD (Mercury): 0P153500-0P400999, 0T409000-1B226999

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 91754? 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

40+ years of marine expertise. Competitive pricing, same-day shipping on most orders.