Mercury Water Pump Base Gasket 192043
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Mercury 192043 is a genuine OEM water pump base gasket for selected Mercury and Mariner small outboard applications. Listed in Mercury catalog format as 27-192043, this gasket seals the water pump assembly between the pump base and gearcase housing, keeping the cooling system properly sealed during pump service.
Key Features
- Genuine Mercury Marine / Quicksilver OEM part
- Part number: 192043
- Mercury catalog reference: 27-192043
- Type: Water pump base gasket
- Designed for selected small outboard water pump assemblies
Engine Compatibility
Commonly listed for selected Mercury 6 HP, 8 HP, 9.9 HP, 10 HP, and 15 HP outboards, including 6–15 HP 2-stroke carbureted models and selected 9.9/15 HP 4-stroke carbureted models within serial range 0G760300–1B226999. Always confirm compatibility by exact model and serial number before ordering.
Serial Number Fitment Notice
Confirm compatibility in the Mercury Parts Catalog using your exact engine serial number before purchase. Mercury’s catalog is organized by model and serial number for accurate parts lookup.
When This Part Needs Replacement
Replace this gasket during water pump service when the original is compressed, torn, leaking, or being renewed as part of impeller and pump-base maintenance. Because it seals the base of the water pump assembly, its condition directly affects cooling-system integrity.
Installation Notes
Install only the exact gasket specified for the outboard being serviced. On small Mercury water pump assemblies, matching by exact part number and serial-based diagram is the safest way to maintain proper fit and sealing.
Alternate / Superseded Part Numbers
- Mercury / Quicksilver: 27-192043
- Sierra cross-reference: 18-0995
Related Products
- Mercury MerCruiser Water Pump Repair Kit 42089A5
- Mercury Water Pump Base to Face Plate Gasket 27-39625
- Mercury Mariner Outboard Water Tube Seal Grommet 38452
Parts Desk Insights
Best use case: This gasket is the right call any time you’re doing a water pump service on a small Mercury outboard — particularly when replacing the impeller. The base gasket is easy to overlook, but reusing a compressed or torn original is one of the most common causes of cooling leaks after a pump rebuild. If you’re already in the pump, replace it. Pair it with the Water Pump Repair Kit 42089A5 to address the impeller, housing, and all related seals in one service.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.