Water Pump Repair Kit Without Housing for Yamaha F70A 4-Stroke Outboard, 2010–2017 – Replaces 6CJ-W0078-00-00
Water Pump Repair Kit Without Housing for Yamaha F70A 4-Stroke Outboard, 2010–2017 – Replaces 6CJ-W0078-00-00 is backordered and will ship as soon as it is back in stock.
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Water Pump Repair Kit Without Housing for Yamaha F70A 4-Stroke Outb...
Water Pump Repair Kit Without Housing for Yamaha F70A 4-Stroke Outboard, 2010–2017 – Replaces 6CJ-W0078-00-00 is backordered and will ship as soon as it is back in stock.
Product Details
This Water Pump Repair Kit Without Housing is designed for Yamaha F70A 4-stroke outboard engines from 2010 through 2017. It supplies the service components needed to renew the water pump and help restore reliable cooling-system operation.
The kit replaces Yamaha OEM part number 6CJ-W0078-00-00. It is an aftermarket replacement kit and does not include the water pump housing itself.
- Designed for the Yamaha F70A 4-stroke outboard application listed below.
- Includes the impeller, pump cover, insert cup, wear plate, gaskets, seals, key, dowel pin, and mounting hardware required for the listed water pump service.
- Verify the engine model, year, and original part number before ordering.
Part Number Matrix
Use the references below to compare the replacement kit with the applicable Yamaha OEM number.
| Brand | Part Number | Reference |
|---|---|---|
| Yamaha | 6CJ-W0078-00-00 | OEM replacement reference |
Engine & Model Compatibility
This application is limited to the model and year range shown below. The catalog relationship identifies the kit as a water pump kit without housing for the Yamaha F70A.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | F70A | 70 HP | 4-Stroke | 2010–2017 | 6CJ-W0078-00-00 | Water pump repair kit without housing |
Technical Specs
- Product Type
- Water Pump Repair Kit Without Housing
- Application
- Yamaha F70A 4-stroke outboard engines, 2010–2017
- Installation
- Replacement water pump service components
- Housing Included
- No; this kit is supplied without the water pump housing
- Product Dimensions
- Not specified
What’s in the Box
- 1 x Water Pump Housing Cover (63D-44312-00)
- 1 x Insert Cup (63D-44322-00)
- 1 x Water Damper Seal (663-44366-00)
- 1 x Water Pump Gasket (6CJ-44315-00)
- 1 x Water Pump Gasket (6CJ-44316-00)
- 1 x Wear Plate (6CJ-44323-00)
- 1 x Water Pump Gasket (6CJ-44324-00)
- 1 x Impeller (6H3-44352-00)
- 1 x Bolt with Washer (90119-08M14)
- 1 x Bolt with Washer (90119-08M33)
- 1 x Woodruff Key (90280-03M03)
- 1 x Oil Seal (93101-23070)
- 1 x O-Ring (93210-46044)
- 1 x Dowel Pin (93604-10M03)
Installation Notes
- Confirm the engine model, year, and existing water pump components before beginning work.
- Disconnect the battery and follow the outboard manufacturer’s service procedures for lower-unit removal.
- Drain the lower-unit gear lubricant if required by the service procedure, then remove the lower unit.
- Remove the water pump cover and carefully note the order and orientation of the impeller, insert, plate, seals, and gaskets.
- Clean the pump-cover, plate, and mounting surfaces. Inspect the reusable water pump housing for wear or damage; the housing is not included in this kit.
- Install the supplied components in the correct order. Orient the impeller vanes in the direction of rotation during assembly.
- Use suitable marine lubricant where specified by the manufacturer and keep sealing surfaces clean.
- Reassemble the water pump and tighten fasteners to the manufacturer’s service specifications.
- Reinstall the lower unit and refill the gear lubricant with the correct type and quantity.
- Run the engine only in water or with an appropriate flushing device, and confirm a steady tell-tale water stream before normal operation.
Troubleshooting & FAQ
Which Yamaha engines does this kit fit?
This kit is identified for Yamaha F70A 70 HP 4-stroke outboards from 2010 through 2017. Confirm the complete model designation and the original water pump part number before ordering.
Does the kit include the water pump housing?
No. This is a water pump repair kit without housing. It includes the housing cover and internal service components, but not the water pump housing itself.
What part number does this kit replace?
The listed Yamaha OEM replacement reference is 6CJ-W0078-00-00.
What are common signs of a worn water pump?
A weak or intermittent tell-tale stream, overheating warnings, reduced cooling performance, or a damaged, cracked, or brittle impeller can indicate water pump service is needed. Check for blockages and inspect the complete cooling system when diagnosing an overheating condition.
Can this kit be used on Yamaha F40 or other models?
Do not assume compatibility with other Yamaha models. The documented application for this listing is the F70A from 2010–2017. Other models may use different water pump kits and component combinations.
Is this an OEM Yamaha kit?
No. This is an aftermarket replacement kit that references the Yamaha OEM application and part number shown above. Yamaha is a trademark of its respective owner.
How often should the impeller be inspected?
Inspect and replace the impeller according to the engine manufacturer’s maintenance schedule and the operating conditions. Frequent use in saltwater, silty water, or other abrasive conditions may require more frequent inspection.
What should I do if the engine still overheats after installation?
Stop operation and check the impeller orientation, gaskets, seals, water passages, thermostat, pressure-control components, and the condition of the reusable water pump housing. Follow the manufacturer’s diagnostic and service procedures.
Safety & Important Info
- Verify the model, year, stroke, and OEM part number against your original engine and components before purchase.
- This kit does not include the water pump housing.
- Use the manufacturer’s service manual for torque values, lower-unit procedures, and maintenance intervals.
- Professional installation is recommended if you are not familiar with outboard lower-unit or water pump service.
About Sea Sierra
- Marine Replacement Parts — We provide aftermarket components for routine service and repair applications.
- Application-Focused Listings — Product information is organized around documented engine models and part-number references.
- Support for Fitment Checks — Compare your engine identification and original component before ordering.
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