Water Pump Repair Kit with Housing for Select Yamaha Outboard Engines 150–300 HP
Water Pump Repair Kit with Housing for Select Yamaha Outboard Engines 150–300 HP is backordered and will ship as soon as it is back in stock.
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Water Pump Repair Kit with Housing for Select Yamaha Outboard Engin...
Water Pump Repair Kit with Housing for Select Yamaha Outboard Engines 150–300 HP is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket water pump repair kit with housing is intended for select Yamaha outboard engines in the 150–300 HP range. The listed cross-reference numbers and engine applications cover both 2-stroke and 4-stroke Yamaha models, but exact fitment depends on the engine model, year, stroke configuration, and serial-number range.
The kit is listed as a replacement for Yamaha part numbers 61A-W0078-A2-00, 61A-W0078-A3-00, 61A-W0078-A4-00, 64L-W0078-00-00, and 65L-W0078-A0-00. Aftermarket reference numbers include Sierra 18-3396-1 and Mallory 9-48618.
- Includes a water-pump cartridge, impeller, gaskets, O-rings, plates, dowel pins, fasteners, and woodruff key as listed below.
- Includes the water-pump housing identified in the product description.
- Designed as a replacement water-pump service kit; compare the original assembly and all reference numbers before ordering.
Part Number Matrix
Use the following numbers as cross-reference information only. Confirm the complete engine application before installation.
| Brand | Part Number |
|---|---|
| Yamaha | 61A-W0078-A2-00 |
| Yamaha | 61A-W0078-A3-00 |
| Yamaha | 61A-W0078-A4-00 |
| Yamaha | 64L-W0078-00-00 |
| Yamaha | 65L-W0078-A0-00 |
| Sierra | 18-3396-1 |
| Mallory | 9-48618 |
Engine & Model Compatibility
The applications below reflect the supplied fitment information. Model, year, stroke, shaft configuration, and serial-number conditions must be checked together against the engine identification plate and service information.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | F150 | 150 | 4-Stroke | All Years | 61A-W0078-A3-00 | Verify the exact model and serial range. |
| Yamaha | LF150 | 150 | 4-Stroke | All Years | 61A-W0078-A3-00 | Verify the exact model and serial range. |
| Yamaha | F175 | 175 | 4-Stroke | 2002–present | 61A-W0078-A3-00 | Confirm the year and serial-number application. |
| Yamaha | F200 | 200 | 4-Stroke | 2002–present | 61A-W0078-A3-00 | Application information includes V6 and inline-four configurations; verify the specific engine. |
| Yamaha | F225 | 225 | 4-Stroke | 2002–present | 61A-W0078-A3-00 | Confirm the year and serial-number application. |
| Yamaha | F250 | 250 | 4-Stroke | 2005–present | 61A-W0078-A3-00 | Confirm the year and serial-number application. |
| Yamaha | VF175 / VF200 / VF225 / VF250 | 175–250 | 4-Stroke | 2011–present | 61A-W0078-A3-00 | SHO series application; verify the exact engine identification. |
| Yamaha | 150 / 175 / 200 / 225 / 250 / 300 | 150–300 | 2-Stroke | 1992–2009 | 61A-W0078-A3-00 | Includes listed S, SX, V, VX, VZ, Z, P, C, LX, and LZ prefix variants; verify the complete model designation. |
Technical Specs
- Product Type
- Water Pump Repair Kit with Housing
- Installation
- Direct replacement when the engine application and original component numbers match
- Housing Material
- Nylon PA66 plastic housing with stainless-steel insert cup and wear plate
- Impeller Material
- Neoprene rubber
- Gasket and O-Ring Material
- Neoprene rubber
- Product Status
- Aftermarket replacement; not an OEM Yamaha component
What’s in the Box
- 1 x Cartridge Insert, 61A-44322-02-00
- 1 x O-Ring, 93210-86M38-00
- 1 x O-Ring, 93210-37M67-00
- 1 x Impeller, 6E5-44352-01-00
- 1 x Cartridge Outer Plate, 6G5-44323-01-00 / 6G5-44323-00-00
- 1 x Water Pump Gasket, 6E5-44315-A0-00
- 2 x Dowel Pins, 93606-12019-00
- 4 x Bolts with Washers, 90119-08M14-00
- 1 x Woodruff Key, 90280-04M05-00
- 1 x Water Pump Housing, 61A-44311-01-00
- Additional components shown in photographs or associated with other versions may not be included unless specifically listed above. Confirm the package contents before purchase.
Installation Notes
- Disconnect the negative battery cable and remove the engine cover as required.
- Disconnect the shift linkage according to the engine service manual.
- Remove the lower-unit mounting bolts and carefully lower the gearcase.
- Remove the existing water-pump housing and related components from the lower unit.
- Clean the driveshaft and all mating surfaces, removing old gasket material, scale, and debris.
- Install the woodruff key, impeller, gaskets, plates, cartridge, and housing in the correct sequence for the engine.
- Use suitable assembly lubricant where specified by the service manual. Do not substitute lubricant or sealant contrary to Yamaha instructions.
- Reinstall the lower unit, aligning the driveshaft, water tube, and shift shaft. Tighten all fasteners to the service-manual specification.
- Reconnect the shift linkage and battery. Test the engine in water or with the correct flushing equipment and confirm water flow before normal operation.
Troubleshooting & FAQ
How do I know if my water pump is failing?
Possible signs include a weak or absent tell-tale stream, an overheating warning, reduced-power or limp-mode operation, or an impeller that is dry, brittle, cracked, or damaged. Inspect the complete cooling system before replacing parts.
When should the impeller be replaced?
Inspect the impeller at the interval specified in your engine service information and replace it when damaged, deformed, worn, or otherwise unsuitable for continued use. Operating conditions such as saltwater, sand, silt, and debris can affect service life.
Will this fit every Yamaha F200 model?
No universal fitment should be assumed. The supplied application information includes V6 and inline-four F200 configurations, but the exact year, model designation, and serial-number range must match before ordering.
Does this kit include the main water-pump housing?
Yes. The product is described as a water pump repair kit with housing, and the listed package contents identify the housing as 61A-44311-01-00. Compare the supplied housing with the original part before installation.
Is this an OEM Yamaha kit?
No. This listing is for an aftermarket replacement kit. The Yamaha numbers shown are manufacturer reference numbers used for application and cross-reference purposes.
What should I verify before ordering?
Verify the engine brand, exact model designation, horsepower, stroke, year, shaft configuration, serial-number range, original water-pump assembly, and applicable reference number. If the original components differ, do not rely on horsepower alone.
Safety & Important Information
- Use the engine service manual for disassembly, torque values, adjustment procedures, and final testing.
- Do not operate an outboard without adequate cooling-water supply.
- Compare the images, dimensions, original components, and reference numbers before purchase and installation.
- This is an aftermarket replacement, not an OEM Yamaha component.
- Professional installation is recommended when lower-unit removal or shift-linkage adjustment is required.
About Sea Sierra
- Pro-Grade Standards — We supply marine replacement parts selected for dependable service in real-world operating conditions.
- Global Fulfillment — Shipping options and delivery estimates are shown at checkout based on destination and availability.
- Manufacturer-Direct Value — We aim to provide practical replacement solutions with clear application and package information.
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