Mercury MerCruiser Quicksilver Impeller 8037481
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Mercury MerCruiser / Quicksilver Impeller – 8037481
Maintain reliable engine cooling with the genuine Mercury Marine / Quicksilver 8037481 Water Pump Impeller. This OEM impeller circulates raw water through the engine’s cooling system, ensuring consistent water flow to prevent overheating and maintain optimal operating temperatures.
Designed to Mercury Marine’s original equipment specifications, the impeller uses durable neoprene rubber vanes with a molded hub, providing dependable performance in harsh marine environments.
Key Features
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Genuine Mercury / Quicksilver OEM water pump impeller
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Restores proper raw-water circulation through the cooling system
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Durable neoprene rubber construction with molded hub
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Helps prevent engine overheating and cooling system damage
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Direct replacement for factory-installed impeller components
Replaces / Cross Reference
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Mercury 47-8037481
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Mercury 8M0214945
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Tohatsu 3B2-65021-1
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Sierra 18-8920
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Mallory 9-45401
Compatible Mercury / Mariner Engines
Commonly used on small Mercury and Mariner outboard engines, including:
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6 HP 2-stroke outboards
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8 HP 2-stroke outboards
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9.8 HP 2-stroke outboards
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8 HP FourStroke (209cc)
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9.9 HP FourStroke (209cc)
Some 20 HP FourStroke outboards also use this impeller depending on serial number range.
Service Recommendation
Water pump impellers are wear items and should typically be inspected annually and replaced every 100 hours or once per season to maintain reliable cooling system performance.
Important Compatibility Note
Impeller fitment varies by engine model, gearcase design, and serial number range. Always verify compatibility using the engine serial number or existing part number before ordering.
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.