Water Pump Impeller Repair Kit – Fits Mercury/Mariner Outboard 30–70 HP (Replaces 47-89983Q1, 47-89983T1, 47-89983T2)
Water Pump Impeller Repair Kit – Fits Mercury/Mariner Outboard 30–70 HP (Replaces 47-89983Q1, 47-89983T1, 47-89983T2) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
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Water Pump Impeller Repair Kit – Fits Mercury/Mariner Outboard 30–7...
Water Pump Impeller Repair Kit – Fits Mercury/Mariner Outboard 30–70 HP (Replaces 47-89983Q1, 47-89983T1, 47-89983T2) is backordered and will ship as soon as it is back in stock.
Product Details
This Water Pump Impeller Repair Kit – Fits Mercury/Mariner Outboard 30–70 HP is engineered for Mercury and Mariner outboard engines from 30 to 70 HP. It covers a wide range of 2-stroke models and specific Jet Drive applications manufactured between 1963 and 1990.
This kit serves as a direct cross-reference for multiple part numbers, including Mercury 47-89983Q1, 47-89983T1, 47-89983T2, Sierra 18-3207, and GLM 89830.
- Made from marine-grade, chemical and corrosion-resistant metal alloys and high-performance neoprene rubber.
- Designed for direct installation as a complete replacement for your original water pump components.
- Backed by a 1-year factory warranty covering defects and workmanship.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury | 47-89983Q1 |
| Mercury | 47-89983T1 |
| Mercury | 47-89983T2 |
| Mercury | 89983Q1 |
| Mercury | 89983T2 |
| Sierra | 18-3207 |
| Sierra | 18-3007 |
| GLM | 89830 |
| GLM | 12250 |
| Mallory | 9-45300 |
| Mallory | 9-45501 |
| OMC/Johnson/Evinrude | 0775459 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercury | Outboard | 30 | 2-Stroke | 1271884–1448139 | 47-89983Q1 | |
| Mercury | Jet | 30 | 2-Stroke | 0C159200–0G589999 | 47-89983Q1 | |
| Mercury | Outboard | 35 | 2-Stroke | 1571114–1960826 | 47-89983Q1 | 1963-65 |
| Mercury | Outboard | 35 | 2-Stroke | 1960827–6445652 | 47-89983Q1 | 1966-69 |
| Mercury | Outboard | 35 | 2-Stroke | 6445653–Up | 47-89983Q1 | 1984-Up |
| Mercury | Outboard (2-cyl) | 40 | 2-Stroke | 2874704–6445653 | 47-89983Q1 | 1970–1983 |
| Mercury | Outboard (4-cyl) | 40 | 2-Stroke | 0C159200–Up | 47-89983Q1 | |
| Mercury | Outboard (4-cyl) | 45 | 2-Stroke | 5531630–Up | 47-89983Q1 | 1986–89 |
| Mercury | Outboard | 50 | 2-Stroke | 1521914–4962055 | 47-89983Q1 | 1963-77 |
| Mercury | Outboard (4-cyl) | 50 | 2-Stroke | 4962056–A914858 | 47-89983Q1 | 1978–85 |
| Mercury | Outboard (3-cyl) | 50 | 2-Stroke | A912478–D000749 | 47-89983Q1 | 1986–90 |
| Mercury | Outboard (3-cyl) | 60 | 2-Stroke | 6428681–D000749 | 47-89983Q1 | 1984–90 |
| Mercury | Outboard (3-cyl) | 65 | 2-Stroke | 3293184–4571651 | 47-89983Q1 | |
| Mercury | Outboard (3-cyl) | 70 | 2-Stroke | 4571652–B110053 | 47-89983Q1 | 1977–86 |
| Mariner | Outboard | 30–70 | 2-Stroke | 47-89983Q1 | Equivalent to Mercury models | |
| Mercury (Belgium) | Outboard | 30 | 2-Stroke | 9570790–Up | 47-89983Q1 | |
| Mercury (Belgium) | Jet | 30 | 2-Stroke | 9570790–Up | 47-89983Q1 | |
| Mercury (Belgium) | Outboard | 35 | 2-Stroke | 9384476–Up | 47-89983Q1 | |
| Mercury (Belgium) | Outboard | 35 | 2-Stroke | 9466647–Up | 47-89983Q1 | |
| Mercury (Belgium) | Outboard (4-cyl) | 40 | 2-Stroke | 9570790–Up | 47-89983Q1 | |
| Mercury (Belgium) | Jet (4-cyl) | 40 | 2-Stroke | 9570790–Up | 47-89983Q1 | |
| Mercury (Belgium) | Outboard (2-cyl) | 40 | 2-Stroke | 9251456–Up | 47-89983Q1 | |
| Mercury (Belgium) | Outboard (4-cyl) | 45 | 2-Stroke | 9248006–9466691 | 47-89983Q1 | |
| Mercury (Belgium) | Outboard (4-cyl) | 45 | 2-Stroke | 9466692–Up | 47-89983Q1 | |
| Mercury (Belgium) | Outboard (4-cyl) | 50 | 2-Stroke | 9248006–Up | 47-89983Q1 | |
| Mercury (Belgium) | Outboard (3-cyl) | 50 | 2-Stroke | 9385911–9469199 | 47-89983Q1 | |
| Mercury (Belgium) | Outboard (3-cyl) | 50 | 2-Stroke | 9469200–9683054 | 47-89983Q1 | |
| Mercury (Belgium) | Outboard (3-cyl) | 60 | 2-Stroke | 9385911–9469199 | 47-89983Q1 | |
| Mercury (Belgium) | Outboard (3-cyl) | 60 | 2-Stroke | 9469200–9683054 | 47-89983Q1 | |
| Mercury (Belgium) | Outboard (3-cyl) | 70 | 2-Stroke | 9255131–9385910 | 47-89983Q1 | |
| Mercury (Canada) | Outboard | 35 | 2-Stroke | 209608–Up | 47-89983Q1 | |
| Mercury (Canada) | Outboard (4-cyl) | 45 | 2-Stroke | 0A719281–Up | 47-89983Q1 | |
| Mercury (Canada) | Outboard (2-cyl) | 40 | 2-Stroke | 7144763–Up | 47-89983Q1 | |
| Mercury (Canada) | Outboard (4-cyl) | 45 | 2-Stroke | 7143688–0A719280 | 47-89983Q1 | |
| Mercury (Canada) | Outboard (4-cyl) | 50 | 2-Stroke | 7143688–Up | 47-89983Q1 | |
| Mercury (Canada) | Outboard (3-cyl) | 50 | 2-Stroke | 7208333–0A721307 | 47-89983Q1 | |
| Mercury (Canada) | Outboard (3-cyl) | 50 | 2-Stroke | 0A721308–Up | 47-89983Q1 | |
| Mercury (Canada) | Outboard (3-cyl) | 60 | 2-Stroke | 7208333–0A721307 | 47-89983Q1 | |
| Mercury (Canada) | Outboard (3-cyl) | 60 | 2-Stroke | 0A721308–Up | 47-89983Q1 | |
| Mercury (Canada) | Outboard (3-cyl) | 70 | 2-Stroke | 7145938–7208332 | 47-89983Q1 | |
| Mercury (Australia) | Outboard (2-cyl) | 40 | 2-Stroke | 8064750–Up | 47-89983Q1 | |
| Mercury (Australia) | Outboard (4-cyl) | 45 | 2-Stroke | 8063985–Up | 47-89983Q1 | |
| Mercury (Australia) | Outboard (4-cyl) | 50 | 2-Stroke | 8063985–Up | 47-89983Q1 | |
| Mercury (Australia) | Outboard (3-cyl) | 70 | 2-Stroke | 8065065–Up | 47-89983Q1 |
Technical Specs
- Product Type
- Water Pump Impeller Repair Kit
- Installation
- Direct OEM replacement
- Product Dimensions
- 15 x 12 x 6 inches
- Weight
- 85.05 g (3 ounces)
- Warranty
- 1-year factory warranty (against defects and workmanship)
- Material
- Marine-grade corrosion-resistant metal alloy and high-performance neoprene rubber.
What’s in the Box
- 1 x Impeller (47-89983)
- 2 x Drain Gasket (12-20260, 12-19183)
- 1 x Lower Water Pump Base to Face Plate Gasket (27-32769, 27-19553)
- 1 x Upper Face Plate to Pump Body Gasket (27-32770)
- 1 x Water Pump Base Gasket (27-32771, 27-19551)
- 1 x Water Pump Base Gasket (27-77417, 27-19552)
- 1 x Rubber Washer (12-49221-1)
- 1 x Plate (54705)
- 1 x O-Ring (25-26855)
- 1 x O-Ring (25-45711)
- 1 x O-Ring (25-26722)
- 1 x Gasket Set
- 1 x O-Ring Set
- 1 x Wear Plate
Installation Notes
- Disconnect the spark plug wires and the negative battery terminal for safety.
- Drain the gearcase oil and remove the lower unit from the outboard engine.
- Unbolt and carefully remove the existing water pump housing. Note the orientation of all parts.
- Remove the old impeller, gaskets, wear plate, and O-rings.
- Thoroughly clean all mating surfaces, removing any old gasket material or corrosion.
- Install the new wear plate, gaskets, and keyway. Slide the new impeller onto the driveshaft, turning it clockwise to set the vanes correctly.
- Install the new housing and torque the bolts to the manufacturer's specification.
- Reinstall the lower unit, refill the gearcase oil with the correct type and amount, and reconnect the battery.
- Start the engine in water and confirm a steady stream of water is exiting the tell-tale port.
Troubleshooting & FAQ
How do I confirm this kit fits my specific engine?
The best way is to match your engine's model, year, and serial number against our compatibility tables. If your old part has a number stamped on it, you can also check it against the Part Number Matrix. When in doubt, contact our support team with your engine details before ordering.
What are the common signs of a failing water pump impeller?
Key symptoms include the engine overheating (especially at low speeds), a weak or non-existent water stream from the "tell-tale" outlet, and in severe cases, a melted water pump housing. Reduced engine performance can also be a sign of poor cooling.
How often should I replace my outboard's impeller?
As a general maintenance rule, it is recommended to inspect and/or replace the impeller every 1-2 years or every 100-200 hours of operation, whichever comes first. This interval should be shorter if you frequently operate in sandy, silty, or saltwater environments.
Is this a complete kit for the job?
Yes, this kit includes the impeller and all necessary gaskets, seals, O-rings, and plates for a standard water pump service, as detailed in the "What’s in the Box" section. You will only need basic hand tools and sealant if your service manual requires it.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials and manufactured in an ISO 9002 facility. All parts are batch-inspected for quality and consistency.
Shipping speed & cost?
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free for most orders, and expedited options will appear at checkout where available for your location.
Warranty & returns?
This product is covered by a 1-year warranty against manufacturing defects under normal use. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard window, provided the item is unused and in its original condition. See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or quality control.
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