Mercury MerCruiser Water Pump Repair Kit 89984T5
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You have 30 days to request a return. All sale items are final sale.
Restore proper engine cooling and prevent overheating with the Mercury MerCruiser Water Pump Repair Kit 89984T5. This genuine Mercury Marine OEM repair kit is designed to service the water pump system on select Mercury and Mariner outboards as well as MerCruiser sterndrives.
The kit includes the key components required to rebuild the water pump assembly, including the impeller and sealing hardware. Over time, sand, silt, and debris can wear down the impeller and reduce cooling efficiency. Replacing the water pump components with an OEM Mercury repair kit helps restore proper water flow and protects the engine from overheating.
Key Features
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Genuine Mercury Marine OEM water pump repair kit
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Designed to restore proper cooling system performance
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Includes impeller, gaskets, O-rings, and installation components
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Helps maintain proper water flow through the engine
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Protects engine from overheating caused by worn impellers
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Direct replacement for original Mercury water pump service components
Part Details
OEM Part Number: 89984T5
Mercury Reference Number: 47-89984T5
Product Type: Water pump repair / impeller service kit
Application: Marine engine cooling system water pump
Impeller Type: Short vane impeller
Typical Packaging: Complete repair kit including impeller, faceplate, gaskets, O-rings, drive key/pin, water tube guide sleeve, and drain screw seals (pump base not included).
Compatible Mercury & MerCruiser Engines
Designed for select Mercury and Mariner outboards and MerCruiser sterndrives equipped with short-vane impeller water pumps, including:
Mercury / Mariner Outboards
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Mercury / Mariner 65HP (4-cylinder) through V6 outboards with short vane impellers
MerCruiser Sterndrives
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MC-I (MerCruiser I)
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R Drive
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MR Drive
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Alpha One
Typical Serial Number Range
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MerCruiser drives 2495186 through 0D469858.
Function
The water pump impeller circulates cooling water through the engine to regulate temperature during operation. Over time the rubber impeller can wear, crack, or lose flexibility, reducing water flow.
Replacing worn water pump components helps:
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Restore proper engine cooling
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Prevent overheating and engine damage
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Maintain reliable water circulation
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Extend overall engine life
Important Compatibility Note
Water pump repair kits vary depending on engine model, drive type, impeller design, and serial number range. Always verify compatibility using the engine or sterndrive serial number before ordering to ensure the correct kit.
Cross-Stock / Superseded Part Numbers
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47-89984T5 – Mercury service reference number
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47-89984Q5 – Alternate Mercury kit version
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47-89984T3 / 47-89984T4 / 47-89984T6 – Earlier versions replaced by this repair kit
Shipping: Ships same or next day for fast Canada wide shipping. ⚓
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.