26-161681 Mercury MerCruiser 161681 Seal | Genuine Quicksilver OEM Part
26-161681 Mercury MerCruiser 161681 Seal | Genuine Quicksilver OEM Part
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🔧 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
🚤 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
🔄 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
📦 Condition
- Genuine Quicksilver part
- Brand new
- Supplied in original or equivalent packaging
Shipping & Delivery
Shipping & Delivery
Flat-rate shipping Australia-wide — $14.99 per order, no matter how many parts you add. Orders dispatch from our Kadina, South Australia store. Need it urgently or want to collect in person? Call us on 0412 532 984 before ordering.
Returns & Warranty
Returns & Warranty
14-day change-of-mind returns — if it's not right or you ordered the wrong part, send it back within 14 days in new, unused condition for a refund or exchange. Manufacturer warranties apply to new parts. Full details in our Refunds & Returns policy.
Not sure this fits?
Not sure this fits?
Ask us before you buy — we check part numbers and fitment every day. Call 0412 532 984 (Mon–Fri 8.30am–4.30pm) or message us through the contact page with your engine or vehicle details.
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