Water Pump Repair Kit Without Housing – Mercury Mariner 2-Stroke 65–225 HP
Water Pump Repair Kit Without Housing – Mercury Mariner 2-Stroke 65–225 HP is backordered and will ship as soon as it is back in stock.
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Water Pump Repair Kit Without Housing – Mercury Mariner 2-Stroke 65...
Water Pump Repair Kit Without Housing – Mercury Mariner 2-Stroke 65–225 HP is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket water pump repair kit without housing is designed for selected Mercury Mariner 2-stroke outboard engines from 65 HP through 225 HP. It is intended for water pump service where the existing pump housing is retained and reused. Confirm the exact engine model and serial number before ordering.
The listed application range includes Mercury/Mariner 650, 700, 700 E-2, 75, 80/800, 850 E-1 and EL-1, 850 XS, 90, 95/950, 100/1000, 105 Jet, 110/1100, 115/1150, 125/1250, 135/1350, 140/1400, 150/1500, V-150, V-150 XR2/XR4/XR6, V-175, V-200, V-220 Laser and V-225 models. Model, year and serial-number conditions must be matched to your engine.
- Water pump service kit for 2-stroke Mercury Mariner outboards.
- Supplied without the water pump housing.
- Use the existing housing only if it is serviceable and matches the replacement components.
- Aftermarket replacement for reference numbers listed below.
Reference Number Matrix
These numbers are provided as cross-reference information. They do not replace verification of the engine model, serial number and existing water pump housing.
| Brand or Source | Reference Number |
|---|---|
| Mercury Marine | 46-89984Q5 |
| Mercury Marine | 47-89984Q5 |
| Mercury Marine | 47-89984T3 |
| Mercury Marine | 47-89984T4 |
| Mercury Marine | 47-89984T5 |
| Mercury Marine | 47-89984T6 |
| Mercury Marine | 803631T, 899843, 899844 |
| Mercury Marine | 89984B2, 89984B3, 89984T6 |
| Mercury Marine | 46-96148A8, 46-96148A5 |
| Mercury Marine | 46-78400A2, 46-57234A3 |
| Mercury Marine | 46-32437A3, 46-48747A3 |
| Mercury Marine | 46-42579A4, 46-73804A3 |
| OBR | ME-618 |
| Sierra Marine | 18-3217, 18-3517 |
| Mallory Marine | 9-48311 |
Engine Compatibility
The company application data identifies this repair kit for the following Mercury Mariner 2-stroke outboard families. The list is a model-family guide, not a substitute for serial-number verification.
| Engine Family | Rated HP | Stroke | Application Note |
|---|---|---|---|
| 650 / 65 HP, 4-cylinder | 65 | 2-Stroke | Confirm model and serial number. |
| 700 / 700 E-2, 6-cylinder | 70 | 2-Stroke | Confirm model and serial number. |
| 75 HP, 4-cylinder | 75 | 2-Stroke | Confirm model and serial number. |
| 800 / 80 HP, 4- or 6-cylinder | 80 | 2-Stroke | Confirm model and serial number. |
| 850 E-1, EL-1 and 850 XS | 85 | 2-Stroke | Different configurations may use different service parts. |
| 90 HP and 95/950 | 90–95 | 2-Stroke | Confirm model and serial number. |
| 100/1000 and 105 Jet | 100–105 | 2-Stroke | Jet applications require exact model verification. |
| 110/1100, 115/1150 and 125/1250 | 110–125 | 2-Stroke | Confirm model and serial number. |
| 135/1350 and 140/1400 | 135–140 | 2-Stroke | Confirm model and serial number. |
| 150/1500 and V-150 Carb, EFI or DFI | 150 | 2-Stroke | Confirm model, configuration and serial number. |
| V-150 XR2, XR4, XR6 and Magnum II/III | 150 | 2-Stroke | Confirm exact model and serial number. |
| V-175 Carb, EFI or DFI | 175 | 2-Stroke | Confirm model, configuration and serial number. |
| V-200 Carb or EFI, 2.5L | 200 | 2-Stroke | Confirm exact model and serial number. |
| V-220 Laser | 220 | 2-Stroke | Confirm exact model and serial number. |
| V-225, 2.4L | 225 | 2-Stroke | Confirm exact model and serial number. |
Important: The kit is supplied without a water pump housing. Inspect the existing housing, cover, plate and mating surfaces for scoring, distortion, corrosion or excessive wear before installation. Replace damaged housing components as necessary.
Technical Information
- Product Type
- Water pump repair/service kit without housing
- Application
- Selected Mercury Mariner 2-stroke outboards, 65–225 HP
- Housing
- Not included; reuse of the existing housing requires inspection
- Replacement Type
- Aftermarket service replacement
- Fitment Verification
- Match engine model, horsepower, configuration and serial number before ordering
What’s Included
This is a water pump service kit supplied without the water pump housing. Exact component quantities and configuration should be checked against the product image and the service requirements of your engine before installation.
- Water pump service components for the listed application.
- Replacement impeller and related service sealing components as applicable to the kit configuration.
- Water pump housing is not included.
Installation Notes
- Disconnect the battery and ensure the engine is secure before beginning service.
- Place the engine in neutral and remove the lower unit according to the manufacturer's service procedure.
- Remove the water pump cover and existing service components.
- Inspect the existing housing, wear surfaces, face plate, water tube and keyway. Do not reuse damaged or excessively worn parts.
- Clean all mating surfaces and remove old gasket material without scratching the sealing surfaces.
- Install the replacement service components in the correct order for your engine. Use the engine manufacturer's torque specifications and recommended sealants.
- Fit the impeller with the vanes oriented correctly for the direction of shaft rotation specified for the engine.
- Reinstall the water pump cover and lower unit, ensuring correct alignment of the water tube, driveshaft and shift shaft.
- Test the engine with an appropriate water supply and confirm a steady cooling-water stream before normal operation.
Maintenance & FAQ
Does this kit include the water pump housing?
No. The company product description identifies this as a water pump service kit supplied without the housing. The existing housing must be inspected and reused only when it is serviceable.
How do I confirm fitment?
Match the engine brand, model family, horsepower, 2-stroke configuration and complete serial number against the manufacturer's parts information. Model-family listings alone do not confirm every serial-number range.
Can I use the existing pump housing?
Yes, provided the housing and related wear surfaces are in serviceable condition and match the kit application. Scoring, corrosion, distortion or excessive clearance can cause poor water-pump performance.
What symptoms indicate water-pump service is needed?
Weak or intermittent tell-tale flow, overheating warnings, elevated operating temperature and steam from the exhaust can indicate a cooling-system problem. Stop operating an engine that is overheating or is not producing a proper cooling-water stream.
Is this an OEM part?
No. This is an aftermarket replacement. Mercury, Mariner, Sierra, Mallory and other names or reference numbers are used only to identify applications and cross-reference the replacement.
How often should the impeller be inspected?
Inspect the water-pump components as part of routine marine maintenance and replace worn, hardened, cracked or damaged components. Service intervals should follow the engine manufacturer's recommendations and operating conditions.
Safety & Important Information
- Verify the complete engine model and serial number before ordering.
- Do not assume that every 65–225 HP engine uses the same pump configuration.
- Do not run the engine without an adequate cooling-water supply.
- Professional installation by a qualified marine technician is recommended.
- Inspect the existing housing carefully because this product does not include a replacement housing.
About Sea Sierra
- Marine Replacement Parts — Practical aftermarket service components for routine outboard maintenance.
- Fitment-Focused Information — Product references and application guidance are provided to help customers compare their engine details before ordering.
- Service Support — Contact support with your engine model and serial number if you need help checking the application.
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