Mercury MerCruiser Quicksilver Impeller Kit 8M0104229
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Mercury MerCruiser / Quicksilver Impeller Kit – 8M0104229
Maintain proper engine cooling and protect your MerCruiser sterndrive with the genuine Mercury Marine / Quicksilver 8M0104229 Impeller Kit. This OEM seawater pump repair kit restores cooling water flow by replacing the worn impeller and sealing components in the engine’s raw water pump.
Designed to Mercury Marine’s original equipment specifications, the kit ensures consistent cooling performance and helps prevent overheating caused by reduced water pump efficiency.
Key Features
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Genuine Mercury / Quicksilver OEM impeller kit
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Restores cooling water flow through the seawater pump
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Helps prevent engine overheating and cooling system damage
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Durable high-flex elastomer impeller for long service life
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Designed specifically for MerCruiser sterndrive cooling systems
Kit Includes
Typical kit components include:
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Water pump impeller
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O-ring seal
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Additional installation components depending on pump configuration.
Replaces / Cross Reference
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47-862232A2
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Sierra 18-3016-1
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Various aftermarket equivalents depending on manufacturer.
Compatible Mercury MerCruiser Engines
Commonly used on MerCruiser sterndrive engines (2000 and newer) equipped with brass seawater pumps, including:
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4.3L V6 engines
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5.0L V8 engines
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5.7L V8 engines
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6.2L V8 engines
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7.4L / 8.2L V8 engines
These engines are typically found in Alpha and Bravo sterndrive applications across a wide range of MerCruiser models.
Service Recommendation
Mercury recommends inspecting or replacing the water pump impeller every 100 hours or at least once per season to maintain proper cooling system performance.
Important Compatibility Note
Impeller applications vary by engine model, seawater pump type, and serial number range. Always verify compatibility using the engine serial number to ensure the correct impeller kit for your specific MerCruiser engine.
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.