Stop wasting money on aftermarket parts that fail. Invest in genuine Mercury Marine quality once – this SEAL, LOWER WATER TUBE outlasts cheap alternatives by years.

Manufactured to strict Mercury Marine quality standards, this seal ensures reliable operation across all engine RPM ranges. Part number 16171 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 16171 delivers long-term value through superior materials and precision manufacturing.

Compatible Mercury Marine Engines

FITS: 4HP MARINER, MERCURY

• Fits MARINER, MERCURY 4HP engines
• Compatible HP: 4HP
• Covers 24 serial number ranges
• Configurations: Outboard
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

4HP Models

• 4HP OUTBOARD (Mariner): 0G710613-0T894438, 0P017000-0P400999, 0P073456-0P400999, 0P401000-0R411837, 0R000001-0R067089, 0R067090-0R411837, 0A855097-0G710612, 9589154-0P016999
• 4HP OUTBOARD (Mercury): 0G710613-0T894438, 0P017000-0P400999, 0P073456-0P400999, 0P401000-0R411837, 0R000001-0R067089, 0R067090-0R411837, 0A809601-0A855096, 9477830-9589153, 0A855097-0G710612, 9589154-0P016999

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 16171? 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

Serving boaters for over 40 years. Best prices guaranteed – free shipping on orders over $100.