Water Pump Service Kit with Housing – Fits Mercury Mariner 4-Stroke 40–60 HP
Water Pump Service Kit with Housing – Fits Mercury Mariner 4-Stroke 40–60 HP is backordered and will ship as soon as it is back in stock.
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Water Pump Service Kit with Housing – Fits Mercury Mariner 4-Stroke...
Water Pump Service Kit with Housing – Fits Mercury Mariner 4-Stroke 40–60 HP 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 cooling-system service replacement for selected Mercury Mariner 4-stroke outboard engines. It is intended for the specific 40 HP, 50 HP, and 60 HP applications listed below and includes the water pump housing required for the service.
The kit is associated with several Mercury Mariner water pump references, including 46-812966A12, 46-812966A10, 46-812966A6, 46-812966A5, 46-812966A4, 46-14334A3, 46-14334A2, and 46-14334A1. Reference numbers are provided for identification and should be checked against the engine model and existing pump components before ordering.
- Water pump service kit for selected Mercury Mariner 4-stroke outboards.
- Includes the water pump housing specified for this service-kit application.
- Designed to renew water-pump components and help restore proper cooling-water circulation.
- Aftermarket replacement; not manufactured or sold by Mercury Marine.
Part Number References
The following manufacturer and aftermarket references are listed for this product. A reference number alone does not confirm fitment; always match the complete engine application.
| Reference Type | Brand | Part Number |
|---|---|---|
| Manufacturer reference | Mercury Mariner | 812966A12 |
| Manufacturer reference | Mercury Mariner | 812966A10 |
| Manufacturer reference | Mercury Mariner | 812966A6 |
| Manufacturer reference | Mercury Mariner | 812966A5 |
| Manufacturer reference | Mercury Mariner | 812966A4 |
| Manufacturer reference | Mercury Mariner | 14334A3 |
| Manufacturer reference | Mercury Mariner | 14334A2 |
| Manufacturer reference | Mercury Mariner | 14334A1 |
| Manufacturer reference | Mercury Mariner | 46-812966A12 |
| Manufacturer reference | Mercury Mariner | 46-812966A11 |
| Manufacturer reference | Mercury Mariner | 46-812966A10 |
| Manufacturer reference | Mercury Mariner | 46-812966A6 |
| Manufacturer reference | Mercury Mariner | 46-812966A5 |
| Manufacturer reference | Mercury Mariner | 46-812966A4 |
| Manufacturer reference | Mercury Mariner | 46-14334A3 |
| Manufacturer reference | Mercury Mariner | 46-14334A2 |
| Manufacturer reference | Mercury Mariner | 46-14334A1 |
| Aftermarket reference | GLM Marine | 12124 |
| Aftermarket reference | GLM Marine | 12095 |
| Aftermarket reference | SEI Marine | 96-265-01BK |
Engine Compatibility
Company fitment data identifies the following Mercury Mariner 4-stroke applications. The listed engine configuration, shaft specification, and model details must all match your outboard before purchase.
| Brand | Engine Application | Rated HP | Configuration | Shaft / Model Notes |
|---|---|---|---|---|
| Mercury Mariner | 4-stroke outboard | 40 HP | EFI, 3-cylinder | Long shaft and standard listed application |
| Mercury Mariner | 4-stroke outboard | 50 HP | Carbureted, standard 996 cc | Verify model and pump assembly before ordering |
| Mercury Mariner | 4-stroke outboard | 50 HP | EFI, standard 996 cc | Verify model and pump assembly before ordering |
| Mercury Mariner | 4-stroke outboard | 60 HP | Carbureted, standard 996 cc | Verify model and pump assembly before ordering |
| Mercury Mariner | 4-stroke outboard | 60 HP | EFI, standard 996 cc | Verify model and pump assembly before ordering |
Important: This listing is not confirmed for all 30 HP, 70 HP, or Force applications. Do not rely on horsepower alone. Confirm the full model information and compare the original water pump components and reference numbers.
Technical Specifications
- Product Type
- 4-stroke outboard water pump service kit with housing
- Application Brand
- Mercury Mariner
- Compatible Rated Power
- 40 HP, 50 HP, and 60 HP applications listed above
- Engine Type
- 4-stroke outboard
- Housing
- Included as part of the service-kit application
- Product Status
- Aftermarket replacement
What’s Included
- Water pump service-kit components for the listed application
- Water pump housing
Component configuration and quantity can vary by application. Compare the original pump assembly and the product image with your engine before installation.
Installation Notes
- Confirm the engine model, horsepower, configuration, shaft specification, and existing water pump references before beginning work.
- Disconnect the battery and follow the engine manufacturer’s service procedure for lower-unit removal.
- Remove the existing water pump housing and inspect the pump base, plate, key, water tube, and mating surfaces for wear or corrosion.
- Clean all sealing surfaces and remove old gasket material before installing replacement components.
- Install the service-kit components in the correct order and orientation for your specific engine.
- Make sure the water tube, driveshaft, and shift shaft are correctly aligned when reinstalling the lower unit.
- Use the manufacturer’s specified torque values and sealants where required.
- Run the engine only in an appropriate test tank or in the water, and verify a strong cooling-water tell-tale stream before normal operation.
Maintenance & FAQ
How do I confirm this service kit fits my engine?
Match the complete engine information to the compatibility table: Mercury or Mariner brand, 4-stroke type, rated horsepower, EFI or carbureted configuration, cylinder configuration, shaft specification, and the existing water pump reference. If any of these details differ, confirm fitment before ordering.
Does the service kit include the water pump housing?
Yes. The company product description identifies this item as a water pump service kit with housing.
Is this an OEM Mercury part?
No. This is an aftermarket replacement. Mercury Mariner part numbers are shown only as manufacturer references to help identify the intended application.
What are common signs of a worn water pump?
Possible signs include overheating, reduced cooling-water flow from the tell-tale outlet, weak water flow at idle, or visible cracking and brittleness in the removed impeller. Inspect the complete pump assembly rather than replacing only one component when other parts are worn.
How often should the water pump be serviced?
Follow the maintenance interval in your engine manufacturer’s service manual. Service more frequently when operating in saltwater, sand, mud, or other abrasive conditions, or whenever cooling-water flow becomes weak.
Safety & Important Information
- Verify the full engine application before purchase; horsepower alone is not sufficient to confirm compatibility.
- Do not operate an outboard without an adequate water supply for cooling.
- Allow the engine to cool before servicing the water pump.
- Follow the manufacturer’s service manual for disassembly, torque values, sealing procedures, and testing.
- Professional installation is recommended when lower-unit service is unfamiliar.
About Sea Sierra
- Marine Replacement Parts — We provide aftermarket components for routine outboard maintenance and repair.
- Application-Focused Listings — Product references and compatibility details are provided to help customers compare their engine and original part.
- Service Support — Always use the manufacturer’s service information for installation and maintenance procedures.
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