Water Pump Service Kit with Housing – for Mercury/Mariner 2-Stroke 3.5, 3.6, 4, 7.5 & 9.8 HP – Replaces 46-92970A5, 47-89980T1, 47-89980Q1
Water Pump Service Kit with Housing – for Mercury/Mariner 2-Stroke 3.5, 3.6, 4, 7.5 & 9.8 HP – Replaces 46-92970A5, 47-89980T1, 47-89980Q1 is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Water Pump Service Kit with Housing – for Mercury/Mariner 2-Stroke ...
Water Pump Service Kit with Housing – for Mercury/Mariner 2-Stroke 3.5, 3.6, 4, 7.5 & 9.8 HP – Replaces 46-92970A5, 47-89980T1, 47-89980Q1 is backordered and will ship as soon as it is back in stock.
Product Details
This Water Pump Service Kit with Housing is an aftermarket replacement assembly for selected Mercury and Mariner 2-stroke outboards. The company product specification identifies the kit for 3.5 HP, 3.6 HP, 4 HP, 7.5 HP and 9.8 HP applications.
The kit is identified as GLM Marine 12271 and includes the water-pump base and pump housing together with the impeller service components. It is associated with Mercury/Mariner references 47-89980T1, 47-89980Q1, 92970A5, 89980T1, 89980Q1 and 46-92970A5.
- Water pump service kit supplied with the base and pump housing.
- For selected Mercury and Mariner 2-stroke outboards from 3.5 HP to 9.8 HP.
- Uses the 0.438-inch impeller inside diameter associated with the 47-89980T1 application.
- Verify the exact engine model, serial range and existing pump components before ordering.
Part Number Matrix
The following numbers are reference points associated with this replacement kit or its application. Part-number references do not replace model and serial-number verification.
| Brand or Source | Reference Number | Reference Type |
|---|---|---|
| GLM Marine | 12271 | Aftermarket service-kit reference |
| Mercury/Mariner | 46-92970A5 | Water-pump repair-kit reference |
| Mercury/Mariner | 47-89980T1 | OEM application reference |
| Mercury/Mariner | 47-89980Q1 | Company-listed application reference |
| Mercury/Mariner | 92970A5 | Company-listed reference |
| Mercury/Mariner | 89980T1 | Company-listed reference |
| Mercury/Mariner | 89980Q1 | Company-listed reference |
Engine Compatibility
This kit is listed for selected Mercury and Mariner 2-stroke outboards in the horsepower range shown below. Compatibility can vary by model, production year and serial number, so compare your original pump assembly and engine identification label before purchase.
| Brand | Stroke | Rated HP | Application Reference | Important Notes |
|---|---|---|---|---|
| Mercury | 2-Stroke | 3.5 | 47-89980T1 / 46-92970A5 | Verify model and serial number |
| Mercury | 2-Stroke | 3.6 | 47-89980T1 / 46-92970A5 | Verify model and serial number |
| Mercury | 2-Stroke | 4 | 47-89980T1 / 46-92970A5 | Verify pump housing and impeller dimensions |
| Mariner | 2-Stroke | 3.5 | 47-89980T1 / 46-92970A5 | Verify model and serial number |
| Mariner | 2-Stroke | 3.6 | 47-89980T1 / 46-92970A5 | Verify model and serial number |
| Mariner | 2-Stroke | 4 | 47-89980T1 / 46-92970A5 | Verify pump housing and impeller dimensions |
| Mercury/Mariner | 2-Stroke | 7.5 | 47-89980T1 / 46-92970A5 | Confirm serial range before ordering |
| Mercury/Mariner | 2-Stroke | 9.8 | 47-89980T1 / 46-92970A5 | Confirm serial range before ordering |
Technical Specifications
- Product Type
- Water pump service kit with base and pump housing
- Brand or Series
- GLM Marine 12271 aftermarket replacement
- Engine Type
- Selected Mercury and Mariner 2-stroke outboards
- Listed Horsepower Applications
- 3.5 HP, 3.6 HP, 4 HP, 7.5 HP and 9.8 HP
- Impeller Inside Diameter
- 0.438 inch, associated with the 47-89980T1 application
- Installation
- Replacement water-pump service component; confirm fitment before installation
What's in the Box
- Water pump impeller service component
- Water pump base
- Water pump housing
Exact small hardware and gasket contents are not specified in the product record. Reuse or replace additional service items only after comparing them with the original assembly and the engine service procedure.
Installation Notes
- Disconnect the battery and remove the spark-plug leads before beginning work.
- Place the outboard in neutral and remove the lower unit according to the engine manufacturer's service procedure.
- Disconnect the shift linkage or shaft and water tube as required for the specific model.
- Remove the original water-pump housing and impeller assembly, keeping the original parts for comparison.
- Clean the mating surfaces and inspect the driveshaft, keyway, water tube and pump components for wear or damage.
- Install the replacement base, impeller and housing in the same orientation as the original assembly.
- Turn the driveshaft in the correct direction while seating the housing so the impeller vanes are not folded incorrectly.
- Reinstall the lower unit, align the driveshaft, shift shaft and water tube, and tighten fasteners to the engine manufacturer's specifications.
- Run the engine only in an appropriate water supply and confirm a steady cooling-water tell-tale stream before normal operation.
Troubleshooting & FAQ
How do I confirm this kit fits my engine?
Confirm that your engine is a Mercury or Mariner 2-stroke model listed for 3.5, 3.6, 4, 7.5 or 9.8 HP. Then compare the engine model, serial number, original pump housing and impeller dimensions with the application information before ordering.
What is the most important dimensional check?
The associated impeller application uses a 0.438-inch inside diameter. Check the impeller, driveshaft and pump housing against your original components because horsepower alone does not establish fitment.
What are the signs of a worn water-pump impeller?
Common signs include a weak or intermittent tell-tale stream, higher-than-normal engine temperature or damaged, cracked, brittle or missing impeller vanes.
Does this listing include the pump housing?
Yes. The company product record describes this item as GLM Marine 12271 with the water-pump base and pump housing.
Is this an OEM Mercury component?
No. This is an aftermarket replacement associated with the listed Mercury and Mariner application references. Mercury and Mariner names and part numbers are used only to identify compatibility.
Should I replace the impeller as preventive maintenance?
Inspect the impeller regularly and replace it when the vanes show wear, hardening, cracking or deformation. Follow the maintenance interval and service instructions for your exact engine.
Safety & Important Information
- Confirm engine model, serial number, stroke, horsepower and pump dimensions before ordering.
- Do not rely on horsepower alone to determine fitment.
- Compare the supplied housing and impeller with the original parts before installation.
- Use the manufacturer's torque values and installation procedure for your exact outboard.
- Professional installation is recommended if you are not familiar with lower-unit or water-pump service.
About Sea Sierra
- Marine Replacement Parts — We supply replacement components for routine marine maintenance and repair.
- Application-Focused Listings — Product references and compatibility details are provided to help match the correct service part.
- Value for Maintenance Work — Aftermarket alternatives help support practical water-pump servicing when the application is verified.
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