SKU: 86616842044

Water Pump Impeller Repair Kit – Fits Yamaha F40/F70 4-Stroke (Replaces 6CJ-W0078-00/6CJ-W0078-01-00)

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Description

Water Pump Impeller Repair Kit – Fits Yamaha F40/F70 4-Stroke (Replaces 6CJ-W0078-00/6CJ-W0078-01-00)Water Pump Impeller Repair Kit Fits Yamaha F40 F70 4 Stroke (Replaces 6CJ W0078 00 6CJ W0078 01 00) This is a complete water pump impeller repair kit designed for Yamaha F40 (20112016) and F70 (20112016) 4 stroke outboard engines. It provides a reliable solution for maintaining your engine's cooling system. This kit serves as a direct replacement for multiple OEM and aftermarket part numbers, ensuring broad compatibility for the specified engine

Water Pump Impeller Repair Kit – Fits Yamaha F40/F70 4-Stroke (Replaces 6CJ-W0078-00/6CJ-W0078-01-00)

This is a complete water pump impeller repair kit designed for Yamaha F40 (2011–2016) and F70 (2011–2016) 4-stroke outboard engines. It provides a reliable solution for maintaining your engine's cooling system.

This kit serves as a direct replacement for multiple OEM and aftermarket part numbers, ensuring broad compatibility for the specified engine models. All components meet or exceed OEM specifications for a perfect fit and dependable performance.

  • Direct Installation: Manufactured to OEM specifications for a direct, hassle-free replacement of your existing water pump components.
  • Durable Materials: Features a premium rubber impeller for optimal flexibility and longevity, along with stainless steel hardware to resist corrosion in marine environments.
  • Comprehensive Kit: Includes all necessary components for a full water pump rebuild, from the impeller and housing to gaskets, seals, and bolts.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Brand Part Number
Yamaha 6CJ-W0078-00-00
Yamaha 6CJ-W0078-01-00
Quicksilver 8M6012800
Sierra 18-3494

Compatible Engine Models

Confirm your engine model/year in the table below. For Yamaha owners, here’s a guide to help you identify your engine’s serial/model: Yamaha Serial Number Guide. You can also review exploded diagrams to verify part numbers: Yamaha Parts Diagrams & Catalog.

Brand Model Rated HP Stroke Years OEM Part No. Notes
Yamaha F40 40 4-Stroke 2011-2016 6CJ-W0078-00-00/6CJ-W0078-01-00 Models 6CY1 to 6CY7
Yamaha F70 70 4-Stroke 2011-2016 6CJ-W0078-00-00/6CJ-W0078-01-00 Models 6CJ1 to 6CJ7

Technical Specifications

Specification Value
Product Type Water Pump Impeller Repair Kit
Installation Direct OEM replacement
Material Premium rubber (impeller), Stainless steel (hardware)
Compatibility F40 and F70 Yamaha 4-stroke outboards
Manufacturing Standards ISO9002 certified factory
Other Technical Attributes Manufactured to OEM specifications

Package Contents

The complete water pump repair kit includes:

  • 1 x Water Pump Impeller (Replaces 6CJ-W0078-00-00)
  • 1 x Housing Cover
  • 1 x Impeller Key
  • 1 x O-ring
  • 1 x Oil Seal
  • 1 x Wear Plate
  • 1 x Water Seal Damper
  • 1 x Set of Water Pump Gaskets
  • 1 x Pin
  • 1 x Set of Bolts and Washers

Installation Guide

  1. Prepare the Engine: Ensure the engine is turned off and disconnect the battery cables. Place the outboard in a secure, upright position.
  2. Access the Water Pump: Remove the lower unit (gearcase) from the outboard by unbolting it from the upper casing.
  3. Disassemble the Pump: Carefully unbolt and remove the water pump housing to expose the impeller and other components. Note the order of disassembly.
  4. Remove Old Components: Take out the old impeller, wear plate, key, gaskets, and seals. Clean any debris or corrosion from the housing and driveshaft area.
  5. Install New Components: Install the new wear plate, gasket, and impeller key. Slide the new impeller onto the driveshaft, rotating it in the direction of engine operation to set the vanes correctly.
  6. Reassemble the Pump: Place the new housing, seals, and gaskets over the impeller and bolt it down securely according to your service manual's torque specifications.
  7. Reattach Lower Unit: Reinstall the lower unit to the outboard, ensuring the driveshaft and water tube align correctly.
  8. Test Operation: Reconnect the battery, supply water to the engine using a flush device, and start it. Check for a strong, steady stream from the tell-tale outlet.

Troubleshooting & FAQ

How do I confirm this kit fits my engine?
Verify your engine is a Yamaha F40 (models 6CY1 to 6CY7) or F70 (models 6CJ1 to 6CJ7) from the years 2011–2016. You can also cross-reference your existing part number with the OEM numbers 6CJ-W0078-00-00 or 6CJ-W0078-01-00.

What are the signs that my water pump impeller needs replacement?
Common signs include the engine overheating at idle or low speeds, a weak or non-existent water stream from the tell-tale outlet, or visible damage such as cracked, brittle, or missing vanes on the impeller upon inspection.

How often should I replace the water pump impeller?
For optimal engine protection, it is recommended to inspect the impeller annually and replace it every 1-2 years or every 100-200 hours of use, whichever comes first. Usage in saltwater or silty/sandy water may require more frequent replacement.

OEM vs. Aftermarket?
This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

How fast do you ship and how much does it cost?
We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

What is your warranty and return policy?
This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

  • Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
  • This product is an aftermarket replacement part and is not an OEM component.
  • Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

  • Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
  • Fast Global Shipping: Free delivery worldwide in 5–15 days.
  • Direct from Manufacturer: Competitive pricing without compromising quality.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 86616842044

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Freedom
San Leandro, US
★★★★★ 5
Works for my kids BMW
I bought this as a gift for my stepson he has a BMW with a ridiculously complicated oil changing process and this wrench helped him out a lot he was pretty happy with it.
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Reviewed in the United States on August 25, 2025
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Thomas Long
Omaha, US
★★★★★ 5
Works great!
Worked liked a charm on my son's bmw 3 series.
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Reviewed in the United States on September 17, 2025
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Michelle Crawford
Louisville, US
★★★★★ 5
Works perfect
Works as it should no problems
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Reviewed in the United States on August 7, 2025
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Lance Mercer
Natrona Heights, US
★★★★★ 4
Value
Gets stuck easy but used a screw driver to knock cap out
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Reviewed in the United States on November 12, 2025
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Sheldon
Natrona Heights, US
★★★★★ 5
Fits my X5
Well fits the BMW X5 filter cover.
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Reviewed in the United States on April 21, 2025

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