Your Mercury deserves better than cheap aftermarket parts that fail after one season. This genuine **DIAPHRAGM | 6,4CONTENTS OF LOWER UNIT GASKET SET [27-96324M]. :CONTENTS OF CARBURETOR REPAIR KIT [14184M].** delivers the reliability your engine was built for.

Built to Mercury’s exacting factory standards, this gasket ensures reliable operation across all engine RPM ranges. Part number 91748M 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.

Genuine Mercury Marine part 91748M isn’t just a replacement – it’s an investment in your engine’s longevity. Factory engineering ensures optimal performance while cheap alternatives lead to repeated repairs.

FITS: 2-5HP MARINER

• Fits MARINER 2-5HP engines
• Compatible HP: 2HP, 4HP, 5HP
• Covers 5 serial number ranges
• Configurations: Outboard
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

2HP Models

• 2HP OUTBOARD (Mariner)

4HP Models

• 4HP OUTBOARD (Mariner)

5HP Models

• 5HP OUTBOARD (Mariner)

Don’t know where your serial number is? Our quick reference guide shows exactly where to find it on Mercury engines.

Questions about part 91748M? Use our parts finder tool to verify fitment yourself. Prefer to talk to an expert? Use the contact buttons at the bottom of this page to reach our team by text, call, or email.

40+ years of marine expertise. Fast shipping on discount-priced genuine Mercury parts – most orders ship same day.