Save hundreds in dealer fees – install this genuine Mercury Marine GROMMET yourself. Our parts experts provide guidance if needed, and you get OEM quality at discount pricing.

Factory-built to exact Mercury Marine specifications, this component ensures reliable operation across all engine RPM ranges. Part number 821555001 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.

Smart boat owners know: buying cheap parts twice costs more than buying genuine Mercury once. Part 821555001 delivers long-term value through superior materials and precision manufacturing.

Compatible Mercury Marine Engines

FITS: 100-175HP MARINER, MERCURY (DFI, EFI)

• Fits MARINER, MERCURY 100-175HP engines
• Compatible HP: 100HP, 110HP, 115HP, 125HP, 150HP, 175HP
• Model types: DFI, EFI
• Covers 24 serial number ranges
• Configurations: Jet Drive, Outboard
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

100HP Models

• 100HP EFI (Mariner): 0P459572-2B059605, 1B366823-2B059605
• 100HP EFI (Mercury): 0P459572-2B059605, 1B366823-2B059605

110HP Models

• 110HP JET (Mercury)

115HP Models

• 115HP DFI (Mariner): 0T980000-1B226999, 1B227000-1B417701, 1B417702-1B736885
• 115HP DFI (Mercury): 0T801000-1B226999, 1B227000-1B417701, 1B417702-1B736885
• 115HP EFI (Mariner): 1B366823-2B059605
• 115HP EFI (Mercury): 1B366823-2B059605
• 115HP OUTBOARD (Mercury)

125HP Models

• 125HP DFI (Mariner)
• 125HP DFI (Mercury)

150HP Models

• 150HP OUTBOARD (Mercury)

175HP Models

• 175HP PROXS (Mercury)

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

Verification & Support

Questions about part 821555001? 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

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