26-161681 Mercury MerCruiser 161681 Seal | Genuine Quicksilver OEM Part

🔧 Product Description

Genuine Quicksilver Lower Water Pump Seal - Part Number: 26-161681

A genuine Quicksilver lower water-pump and pump-liner seal for selected Mercury and Mariner 25HP and 30HP outboards.

The seal is installed within the lower gear housing around the water-pump or jet-pump assembly. It helps direct cooling water through the pump while separating the pump cavity from adjacent lower-unit areas.

⚙️ Key Features

• Genuine Quicksilver OEM water-pump seal

• Correct Mercury part number 26-161681

• Used in conventional propeller and Jet lower-unit assemblies

• Suits selected 25HP and 30HP two-stroke and EFI four-stroke engines

• Correct moulded profile for the associated pump-liner housing

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 26-161681 current OEM service reference

• 161681 original Mercury base reference

OEM / Related Numbers:

• 26-161681

• 161681

• 26161681

• 745061605510

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• Mercury and Mariner 25HP and 30HP lower-unit water pumps

• Mercury 25 Jet pump and cooling-water assemblies

• Selected SeaPro and EFI four-stroke lower units

Typically suits:

• Engine models:

• Mercury / Mariner 25HP 2-cylinder international - serial 0N018456 to 0N055504

• Mercury / Mariner 25HP and 30HP two-stroke international - serial 0N055505 and above

• Mercury 25 Jet - serial 0N088578 and above

• Mercury 25HP carburetted SeaPro - serial 0R051710 and above

• Mercury / Mariner 30HP 2-cylinder international - serial 0N001875 to 0N055504

• Mercury / Mariner 25HP EFI 3-cylinder four-stroke - serial 0R106999 and above

• Mercury / Mariner 30HP EFI 3-cylinder four-stroke - serial 0R106999 and above

• Mercury 25 Jet EFI - serial 0R165086 and above

• Mercury 25 SeaPro four-stroke - serial 0R051710 and above

• HP Range: 25HP - 30HP

• Engine Type: Mercury / Mariner two-stroke, EFI four-stroke and Jet outboard

• Year Range: Approximately late 1990s onward, dependent on engine and lower-unit serial number

🔌 Function

The seal closes the designated joint within the water-pump or pump-liner housing. It helps the impeller draw and pressurise cooling water without excessive leakage around the lower pump assembly.

Common signs of failure:

• Weak tell-tale or cooling-water flow

• Engine overheating after water-pump service

• Reduced Jet pump cooling performance

• Seal distorted, split or displaced during assembly

• Corrosion or debris preventing the seal from seating correctly

📦 Condition

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging