Mercury MerCruiser Water Pump Repair Kit 89983T1
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You have 30 days to request a return. All sale items are final sale.
Restore proper cooling system performance with the Mercury MerCruiser Water Pump Repair Kit 89983T1. This genuine Mercury Marine OEM repair kit is designed to service the water pump on select Mercury and Mariner outboards, ensuring reliable water circulation through the engine to prevent overheating.
The kit includes the essential 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 internal pump components, reducing cooling efficiency. Replacing these parts with an OEM Mercury repair kit helps restore proper water flow and protects the engine from heat damage.
Key Features
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Genuine Mercury Marine OEM water pump repair kit
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Designed to restore proper engine cooling performance
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Includes impeller, gaskets, O-rings, face plate, and drive key
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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: 89983T1
Mercury Reference Number: 47-89983T1
Product Type: Water pump repair / impeller service kit
Application: Marine engine cooling system water pump
Impeller Type: Rubber cooling water pump impeller
Typical Packaging: Complete repair kit including impeller, gaskets, O-rings, face plate, drive key, and seat assemblies for installation.
Compatible Mercury & Mariner Engines
Designed for select Mercury and Mariner 30-70HP two-stroke outboards, including:
Mercury / Mariner Outboards
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30HP Jet Drive – serial 0C159200 – 0G589999
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35HP TwoStroke – serial 6445653 and newer
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40HP TwoStroke (2-cyl.) – through model year 1983
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40HP TwoStroke (4-cyl.) – serial 0C159200 and newer
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45HP TwoStroke (4-cyl.)
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50HP TwoStroke (4-cyl.) with plastic water pumps
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50–60HP TwoStroke (3-cyl.) – serial 6428681 – 0D000749
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70HP TwoStroke (3-cyl.) – serial 4977157 – 6428680
These engines are commonly used on small fishing boats, aluminum boats, utility skiffs, and jet-drive river boats.
Function
The water pump impeller circulates cooling water through the engine block 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 engine life
Important Compatibility Note
Water pump repair kits vary depending on engine model, pump design, and serial number range. Always verify compatibility using the engine serial number before ordering to ensure the correct kit.
Cross-Stock / Superseded Part Numbers
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47-89983T1 – Mercury service reference number
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47-89983Q1 – Alternate Mercury kit version
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47-89983T2 – Alternate version used in similar applications
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Sierra 18-3207 – Common aftermarket equivalent
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.