Water Pump Repair Kit with Housing – Fits Mercury/Mariner 2-Stroke 15–25 HP and 4-Stroke 9.9–15 HP (Replaces 46-99157T2, 46-99157A02, 85098A2, 99157A2)
Water Pump Repair Kit with Housing – Fits Mercury/Mariner 2-Stroke 15–25 HP and 4-Stroke 9.9–15 HP (Replaces 46-99157T2, 46-99157A02, 85098A2, 99157A2) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
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Water Pump Repair Kit with Housing – Fits Mercury/Mariner 2-Stroke ...
Water Pump Repair Kit with Housing – Fits Mercury/Mariner 2-Stroke 15–25 HP and 4-Stroke 9.9–15 HP (Replaces 46-99157T2, 46-99157A02, 85098A2, 99157A2) is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket water pump repair kit with pump housing is designed for selected Mercury and Mariner outboard applications. It is listed for 2-Stroke 15–25 HP models and selected 4-Stroke 9.9–15 HP BigFoot models. The kit is intended to restore water-pump service components and includes the pump housing identified for this application.
Use the OEM reference numbers, engine type, model designation, and serial-number range together when confirming fitment. A horsepower match alone does not guarantee compatibility.
- Water pump service kit with pump housing.
- Aftermarket replacement for selected Mercury and Mariner outboards.
- Suitable for listed 2-Stroke, 4-Stroke, BigFoot, Sea Pro, Marathon, Super 15, and XD applications when the complete fitment conditions match.
- Not manufactured or sold as a genuine Mercury component.
Part Number Matrix
The following numbers are customer-facing manufacturer or aftermarket reference numbers associated with this water-pump application. They are provided for cross-reference only; verify the complete engine application before ordering.
| Brand | Reference Number | Reference Type |
|---|---|---|
| Mercury Mariner | 46-99157T2 | OEM reference |
| Mercury Mariner | 46-99157A02 | OEM reference |
| Mercury | 85098A2 | OEM reference |
| Mercury | 99157A2 | OEM reference |
| Mercury | 99157T2 | OEM reference |
| GLM Marine | 12014 | Aftermarket reference |
| Sierra | 18-3320 | Aftermarket cross-reference |
| Mallory | 9-48300 | Aftermarket cross-reference |
Engine & Model Compatibility
Compatibility conditions must be kept together. Confirm the exact model, engine type, and serial-number range against your engine identification label or the original water-pump part before installation.
| Brand | Model or Application | Rated HP | Stroke | Serial or Model Condition | Reference |
|---|---|---|---|---|---|
| Mercury/Mariner | 9.9 BigFoot, 323 cc | 9.9 | 4-Stroke | USA 0G760300–0T979999; Belgium 0P075166–0P400999 | 46-99157T2 / 46-99157A02 |
| Mercury/Mariner | 13.5 International | 13.5 | 4-Stroke | 0P134638–0P400999 and 0P401000 & up | 46-99157T2 / 46-99157A02 |
| Mercury/Mariner | 15 BigFoot, 323 cc | 15 | 4-Stroke | 0G760300–1B226999, 0P075166–0P400999, 1B227000–1B727495, or 0P401000 & up, as applicable | 46-99157T2 / 46-99157A02 |
| Mercury/Mariner | 15 Sea Pro (XD) | 15 | 2-Stroke | 9927000–0P016999 or 0P017000–0P325499, as applicable | 46-99157T2 |
| Mercury/Mariner | 15XD, 18XD, 20XD, 25XD | 15–25 | 2-Stroke | Model family application; catalog references indicate 1984 and later for the listed family | 46-99157T2 |
| Mercury/Mariner | 18 | 18 | 2-Stroke | Use the model-specific serial range; multiple 18 HP catalog ranges are listed | 46-99157T2 / 46-99157A02 |
| Mercury/Mariner | 20 Jet | 20 | 2-Stroke | 0G044027–0G760299; confirm Jet water-pump diagram and serial range | 46-99157T2 |
| Mercury/Mariner | 25 Sea Pro, Marathon, or Super 15 | 25 | 2-Stroke | Confirm the model designation and serial range before purchase | 46-99157T2 / 46-99157A02 |
| Mercury/Mariner | Additional company-listed application | 50 | 3-Cylinder | Verify the exact model and serial number; no universal 50 HP fitment is implied | Company application listing |
Technical Specifications
- Product Type
- Water pump repair/service kit with pump housing
- Application
- Selected Mercury and Mariner outboard water-pump assemblies
- Stroke Coverage
- Selected 2-Stroke 15–25 HP and 4-Stroke 9.9–15 HP applications
- Pump Housing
- Included according to the company product record
- Brand Status
- Aftermarket replacement; not a genuine Mercury component
- Primary Aftermarket Reference
- GLM Marine 12014
What’s in the Box
The company product record identifies this item as a water pump service kit with pump housing. The service kit is intended for the listed water-pump application. Exact seal, gasket, washer, key, and hardware contents may vary by production batch, so compare the package and product images with the components required for your engine before installation.
- 1 x Water pump housing assembly
- Water-pump service components for the listed application
Installation Notes
- Confirm the complete engine model, stroke, and serial-number range before beginning work.
- Disconnect the battery where applicable, remove the lanyard, and follow the engine manufacturer's safety procedures.
- Place the outboard in a stable position and remove the lower unit according to the service manual.
- Remove the old water-pump housing and service components. Clean the mating surfaces and inspect the driveshaft, keyway, water tube, and sealing surfaces.
- Transfer or install only the components supplied for your application. Do not reuse damaged gaskets, seals, keys, or fasteners.
- Install the impeller and housing in the correct direction, using suitable lubricant where specified by the service manual.
- Torque fasteners to the manufacturer's specification and ensure the water tube and shift shaft are correctly aligned when reinstalling the lower unit.
- Run the engine only in a proper test tank or in the water. Confirm a strong, consistent tell-tale stream and check for leaks or overheating.
Troubleshooting & FAQ
How do I confirm fitment for my engine?
Match the engine brand, model designation, stroke, horsepower, and complete serial-number range to the compatibility information above. Also compare the old pump assembly and OEM reference number. If any condition differs, do not assume the part will fit.
Does this product include the pump housing?
Yes. The company product record describes this item as a water pump service kit with pump housing.
Is this a genuine Mercury part?
No. This is an aftermarket replacement associated with the listed Mercury and Mariner applications and reference numbers.
What symptoms indicate a worn water-pump service assembly?
Common symptoms include a weak or intermittent tell-tale stream, overheating at idle or low speed, reduced cooling-water flow, or no water discharge. Stop the engine if overheating occurs to prevent serious damage.
How often should the impeller be serviced?
Service intervals depend on the engine manufacturer, operating hours, and water conditions. Inspect and replace the impeller and related service components according to the engine service manual, especially after operation in saltwater, sand, or silt.
Are all seals and hardware included?
The product is identified as a service kit with housing, but the company record does not provide a complete component-by-component quantity list. Confirm the supplied contents against the product images and your engine service requirements before installation.
What warranty and return terms apply?
Warranty and return terms are determined by the store's current policy. Contact customer support before installation if the received contents or fitment differs from the listing.
Safety & Important Information
- Always verify the complete model and serial-number conditions before ordering.
- Do not operate an outboard without adequate cooling-water flow.
- Use the manufacturer's service manual for torque values, disassembly procedures, and installation direction.
- Professional installation is recommended when lower-unit removal or water-pump service is unfamiliar.
About Sea Sierra
- Marine Replacement Parts — Practical aftermarket components for routine outboard service and repair.
- Fitment-Focused Listings — Model, stroke, and serial conditions are provided to help customers verify compatibility.
- Support Before Installation — Contact support if the received part or package contents do not match the listing.
Payment & Security
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