Water Pump Impeller – Fits Mercury/Mariner 30–70 HP 2-Stroke Outboards (Replaces 47-89983T)
Water Pump Impeller – Fits Mercury/Mariner 30–70 HP 2-Stroke Outboards (Replaces 47-89983T) 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 – Fits Mercury/Mariner 30–70 HP 2-Stroke Outboa...
Water Pump Impeller – Fits Mercury/Mariner 30–70 HP 2-Stroke Outboards (Replaces 47-89983T) is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket Water Pump Impeller is designed as a replacement for select Mercury and Mariner 30–70 HP 2-stroke outboards. The listed applications include engines from 1970 to 1989, subject to the model and serial-number ranges shown below. It is also associated with select Suzuki applications using part number 17461-95200; verify the exact engine and original impeller before ordering.
This impeller is listed as an interchange for Mercury part numbers 47-89983T, 47-89983, 47-65959, and 47-20268, along with the aftermarket references shown in the part-number matrix.
- Replaces a worn or damaged water-pump impeller to help maintain proper engine cooling.
- Designed as a direct replacement for specified applications.
- Neoprene impeller body with a brass hub for marine use.
- Confirm the engine model, stroke, and serial-number range before installation.
Part Number Matrix
Use the following references to compare the impeller with the part number listed for your engine.
| Brand | Part Number |
|---|---|
| Mercury | 47-89983T |
| Mercury | 47-89983 |
| Mercury | 47-65959 |
| Mercury | 47-20268 |
| Sierra | 18-3007 |
| CEF | 500312 |
| Mallory | 9-45300 |
| Mallory | 9-45501 |
| GLM | 89830 |
| Suzuki | 17461-95200 |
Engine & Model Compatibility
Match your engine brand, model, horsepower, stroke, and serial-number range with the table below. A model or horsepower match alone does not confirm fitment.
| Brand | Model | Rated HP | Stroke | Serial Range | Reference Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercury | 300 | 30 | 2-Stroke | 1271884–1448139 | 47-89983T | Verify serial number. |
| Mercury | 30 Jet | 30 | 2-Stroke | 0C159200–0G589999 | 47-89983T | Verify serial number. |
| Mercury/Mariner | 350 | 35 | 2-Stroke | 1217222–1448139; 1571114-UP | 47-89983T | Verify serial number. |
| Mercury/Mariner | 400, 402 (2-Cyl) | 40 | 2-Stroke | 1224481–1476509; 2874704–6445653 | 47-89983T | Verify serial number. |
| Mercury/Mariner | 400 (4-Cyl) | 40 | 2-Stroke | 0C159200-UP | 47-89983T | Verify serial number. |
| Mercury/Mariner | 45 (4-Cyl) | 45 | 2-Stroke | 5531630-UP | 47-89983T | Verify serial number. |
| Mercury/Mariner | 500 | 50 | 2-Stroke | 1421113–4962055 | 47-89983T | Verify serial number. |
| Mercury/Mariner | 500 (4-Cyl) | 50 | 2-Stroke | 4962056-UP | 47-89983T | Verify serial number. |
| Mercury/Mariner | 50 (3-Cyl) | 50 | 2-Stroke | 6428681–D000749 | 47-89983T | Verify serial number. |
| Mercury/Mariner | 60 (3-Cyl) | 60 | 2-Stroke | 6428681–D000749 | 47-89983T | Verify serial number. |
| Mercury/Mariner | 65 (3-Cyl) | 65 | 2-Stroke | 3293184–4571651 | 47-89983T | Verify serial number. |
| Mercury/Mariner | 70 (3-Cyl) | 70 | 2-Stroke | 4571652–B110053; 4977157–6428680 | 47-89983T | Verify serial number. |
| Suzuki | Various | — | — | — | 17461-95200 | Compatibility requires verification against the engine and service information. |
Technical Specs
- Product Type
- Outboard water pump impeller
- Installation
- Direct replacement for specified applications
- Material
- Neoprene with brass hub
- Dimensions
- 50.90 mm OD × 19.09 mm ID × 18.71 mm H (2.00 in × 0.75 in × 0.74 in)
- Number of Blades
- 6
- Weight
- 40 g (0.09 lb)
What’s in the Box
- 1 × Water Pump Impeller
The impeller is supplied as the listed replacement component. A key, gasket, wear plate, housing, and other water-pump service parts are not included unless separately stated for your order.
Installation Notes
- Disconnect the negative battery cable and shut off the fuel supply.
- Remove the lower unit from the outboard and keep track of all mounting hardware.
- Unbolt and lift the water-pump housing to expose the old impeller. Note the direction of the vanes.
- Remove the old impeller, key, gaskets, and wear plate as applicable to your pump assembly.
- Clean the pump housing and inspect it for scoring, cracks, or corrosion. Replace damaged components before reassembly.
- Lightly lubricate the new impeller with marine grease or soapy water. Do not run the pump dry.
- Install the wear plate and gasket if required, then install the impeller. Rotate the driveshaft clockwise as the impeller enters the housing so the vanes bend in the correct direction.
- Reinstall the key and secure the pump components according to the engine manufacturer’s service procedure.
- Reinstall the water-pump housing and tighten the fasteners to the manufacturer’s specifications.
- Reattach the lower unit and test the engine in water. Confirm a strong tell-tale stream and monitor for overheating.
Troubleshooting & FAQ
How do I know if this impeller will fit my engine?
Compare the engine brand, model, horsepower, stroke, and serial-number range with the compatibility table. Also compare the original impeller or service-manual part number with the references in the matrix. If any detail differs, obtain confirmation before ordering or installing.
What are the signs of a failing water-pump impeller?
Common signs include a weak or missing tell-tale stream, overheating warnings or alarms, and steam from the exhaust. A damaged impeller may have brittle, cracked, missing, or permanently deformed vanes.
How often should an outboard impeller be replaced?
Replacement intervals depend on engine use and operating conditions. Many owners inspect the impeller annually and replace it according to the engine manufacturer’s maintenance schedule. Saltwater, sand, silt, long storage, and running dry can shorten service life.
My engine is overheating after replacing the impeller. What else could be wrong?
Inspect the intake screens, pump housing, wear plate, gaskets, key, thermostat, cooling passages, and tell-tale outlet. Also verify that the impeller is installed in the correct direction and that the water pump is not being operated without an adequate water supply.
Is it normal for the impeller blades to be bent?
Yes. The vanes bend inside the pump housing during operation. Replace the impeller if the rubber is brittle, cracked, torn, permanently set, or missing pieces.
Is this an OEM part?
No. This is an aftermarket replacement component. OEM and other manufacturer names and part numbers are provided only to help identify applicable replacements and should be checked against your engine documentation.
How much does shipping cost and how fast is it?
Shipping availability, cost, and delivery estimates depend on destination and are displayed at checkout. Standard and expedited options may vary by location.
What is the warranty and return policy?
Warranty coverage and return eligibility are governed by the applicable seller policy and order terms. Review the current policy before purchase and contact support if an issue occurs.
Safety & Important Information
- Verify the original impeller, dimensions, part number, engine model, stroke, and serial-number range before purchase.
- Do not install the part if the original component or pump assembly differs from the information shown here.
- This is an aftermarket replacement component and is not manufactured by Mercury, Mariner, Suzuki, Sierra, CEF, Mallory, or GLM.
- Follow the engine manufacturer’s service instructions. Professional installation is recommended because incorrect water-pump assembly can cause overheating and engine damage.
About Sea Sierra
- Marine Replacement Parts — We supply replacement components for a range of marine service applications.
- Application-Focused Listings — Product references and compatibility information are provided to help customers compare replacement parts.
- Global Fulfillment — Available shipping methods and delivery estimates are shown during checkout based on destination.
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