SKU: 58027193995

Water Pump Impeller Kit – Fits Yamaha 150–300 HP Outboards (Replaces 61A-W0078-A4-00, 61A-W0078-A2-00, 61A-W0078-A3-00)

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Description

Water Pump Impeller Kit – Fits Yamaha 150–300 HP Outboards (Replaces 61A-W0078-A4-00, 61A-W0078-A2-00, 61A-W0078-A3-00)Water Pump Impeller Kit Fits Yamaha 150300 HP Outboards This complete water pump impeller repair kit provides everything needed to restore the cooling system on a wide range of Yamaha V6 outboards. It is designed for Yamaha 2 Stroke & 4 Stroke V6 150300 HP (19972014) engines, including F150, F175, F200, F225, F250, and F300 models. This aftermarket kit serves as a direct replacement for Yamaha OEM part numbers 61A W0078 A4 00, 61A W0078 A3 00, and 61A

Water Pump Impeller Kit – Fits Yamaha 150–300 HP Outboards

This complete water pump impeller repair kit provides everything needed to restore the cooling system on a wide range of Yamaha V6 outboards. It is designed for Yamaha 2-Stroke & 4-Stroke V6 150–300 HP (1997–2014) engines, including F150, F175, F200, F225, F250, and F300 models.

This aftermarket kit serves as a direct replacement for Yamaha OEM part numbers 61A-W0078-A4-00, 61A-W0078-A3-00, and 61A-W0078-A2-00, ensuring a precise fit and reliable performance. It is also equivalent to Sierra 18-3396-1 and Mallory 9-48618.

  • Includes a complete set of components: impeller, housing, insert cup, wear plate, gaskets, key, pins, and all necessary hardware.
  • Constructed with a durable Nylon PA66 Plastic housing for longevity and resistance to wear.
  • Engineered for direct replacement in the lower unit/gearcase for a straightforward installation.

Part Number Cross-Reference

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

Brand Part Number Superseded By
Yamaha 61A-W0078-A2-00 61A-W0078-A3-00
Yamaha 61A-W0078-A3-00 61A-W0078-A4-00
Yamaha 61A-W0078-A4-00
Sierra 18-3396-1
Mallory 9-48618

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 F150 150 4-Stroke 1997-2014 61A-W0078-A4-00 Supersedes 61A-W0078-A3-00
Yamaha F175 175 4-Stroke 1997-2014 61A-W0078-A4-00 Supersedes 61A-W0078-A3-00
Yamaha F200 200 4-Stroke 1997-2014 61A-W0078-A4-00 Supersedes 61A-W0078-A3-00
Yamaha F225 225 4-Stroke 1997-2014 61A-W0078-A4-00 Supersedes 61A-W0078-A3-00
Yamaha F250 250 4-Stroke 1997-2005 61A-W0078-A4-00 Supersedes 61A-W0078-A3-00
Yamaha F300 300 4-Stroke 2004-2005 61A-W0078-A4-00 Supersedes 61A-W0078-A3-00
Yamaha 150-300 HP 150-300 2-Stroke 1997-2005 61A-W0078-A4-00 V6 models, supersedes 61A-W0078-A3-00

Technical Specifications

Product Type Water Pump Impeller Kit with Housing
Installation Lower Unit/Gearcase
Connection Direct Fit
Housing Material Nylon PA66 Plastic
Housing Color Black
Fitting Type Direct Replacement
Warranty 1 Year (Aftermarket)
Other Technical Attributes Kit includes impeller, housing, insert cup, wear plate, gaskets, key, pins, and hardware

Package Contents

  • 1 x Cartridge Insert (61A-44322-02-00)
  • 1 x Water Pump Gasket (6E5-44315-A0-00)
  • 1 x Impeller (6E5-44352-01-00)
  • 1 x Cartridge Outer Plate (6G5-44323-01-00)
  • 4 x Bolt with Washer (90119-08M14-00)
  • 1 x Woodruff Key (90280-04M05-00)
  • 1 x O-Ring (93210-37M67-00)
  • 1 x O-Ring (93210-86M38-00)
  • 2 x Dowel Pin (93606-12019-00)

Installation Guide

  1. Safety First: Disconnect the battery and shift the outboard into neutral.
  2. Drain Oil: Drain the gearcase oil from the lower unit to prevent spills.
  3. Detach Lower Unit: Remove the bolts securing the lower unit to the upper casing and carefully lower and detach the gearcase assembly.
  4. Access Pump: Locate the water pump housing on top of the gearcase and unbolt it.
  5. Remove Old Components: Take out the old housing, impeller, gaskets, and wear plate. Note the rotational direction of the old impeller fins.
  6. Clean Surfaces: Thoroughly clean all mating surfaces, removing any old gasket material or sealant residue.
  7. Install New Gaskets & Plate: Install the new wear plate and gaskets.
  8. Install Impeller: Fit the new Woodruff key into the driveshaft slot. Slide the new impeller onto the driveshaft, turning the shaft in its normal rotational direction to correctly seat the fins inside the housing.
  9. Secure Housing: Place the new housing over the impeller and bolt it down to the manufacturer's specified torque.
  10. Re-install Lower Unit: Carefully re-install the lower unit, ensuring the driveshaft, shift shaft, and water tube are properly aligned.
  11. Refill & Test: Refill the gearcase with fresh, appropriate-grade marine gear oil. Reconnect the battery and test the engine's cooling system using a water supply before heading out on the water.

Troubleshooting & FAQ

Q: How do I confirm this kit fits my Yamaha engine?

A: This kit is designed for a specific range of Yamaha V6 150–300 HP outboards (2-stroke and 4-stroke) manufactured between 1997 and 2014. Please carefully check the "Compatible Engine Models" table on this page and cross-reference your engine's model and year. For absolute certainty, use our Yamaha Serial Number Guide to verify your model.

Q: What are the signs that my water pump impeller needs replacement?

A: Common symptoms of a failing impeller include the engine overheating at idle or low speeds, a weak or non-existent water stream from the "tell-tale" cooling outlet, and visible cracks, brittleness, or missing vanes on the old impeller during a physical inspection.

Q: How often should I replace my water pump impeller?

A: For optimal engine protection and reliability, we recommend inspecting the water pump impeller annually and replacing it every 1-2 years or every 100-200 hours of operation. This interval may be shorter if you frequently operate in saltwater or sandy/silty conditions.

Q: OEM vs. Aftermarket?

A: 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.

Q: How fast do you ship and how much does it cost?

A: 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.

Q: What is your warranty and return policy?

A: 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: 58027193995

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Elisa
Omaha, US
★★★★★ 3
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Format: Kindle
I read this thru KU. I LOVED the synopsis. And then I began reading... and it was a DNF at 68% after picking it up and putting it down several times because I really loved the main female character. *****SPOILERS***** Pros: The world is unique, intriguing and fun. The primary female character is bad-a** but not a b*tech or a mary sue. The primary female has depth. I really want to know what happens to her even tho it's been weeks and I don't remember her name. The villains to the point I read are pretty good -- an ever present threat of mysterious and possibly many culprits. Cons: Way, way too many points of view. I stopped counting at 7. It's the prime reason why I don't care about most of the characters or remember their names even when I like them. There's just too many points of view so almost none of the characters have enough book space for the author to properly develop them. This literally killed the book for me. Actually it killed my desire to read. For weeks. The main male is more villain than hero. He agreed to marry the main female then locks her up & eschews her for her sister, all while bad mouthing her as unfit to rule when he never spent any time with her getting to know her. He is actually unfit to rule as he is blind to the woes of his own kingdom and starts off a peace mission to secure a ceasefire through marriage by murdering an inn full of people in her country for no real reason. Plus, he constantly makes promises he does not keep. And it's gross of him to pine for the sister behind the main female's back. ***** As much as I really wanted to see what happened to the main female character, it wasn't enough for me to keep trying to slog thru this book. There was a lot of potential here that just fell short. Hence, 3 stars.
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Reviewed in the United States on June 19, 2021
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MaryBeth K
Belleville, US
★★★★★ 5
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Format: Kindle
This book is one that just builds and builds and then surprises you to no end. You may think you know the villains and then you are jolted in another direction. Princess Reyna is a real gem, strong of character, a fierce fighter, and loyal to her family and kingdom. Just when you think she and Lorcan, well you know, the plot is flipped. Can't wait to see where this goes in book two.
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Kindle Customer Maureen
Omaha, US
★★★★★ 4
Slow, sorry but good
Format: Kindle
This was a slow moving book. Lots of character pov chapters, lots of superfluous descriptions and endless courtly appearances stalled this book to start. Once you get into the heart of the story, it takes off. Before you know it the book is done. My favorite character is Reyna. She is so strong. She is true to herself. She gets into a lot of trouble with her headstrong ways but it's entertaining. I have high hopes for Lorcan. He is honorable to a fault. Thane had turned out to be better than I thought but i still don't like him. Eislin is useless. Great plot twists at the end. I'm looking forward too book 2.
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Faifre6
Carnegie, US
★★★★★ 5
Very detailed! Beautiful world building! Strong Heroine!
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Starts off a little slow and confusing with different POV’s, but starts to all come together towards the middle to make an elaborate plot line and makes it all worth it. Beautiful world building and attention to detail as well as great writing. The cliffhanger was gut wrenching! Can’t wait for the next book!
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Isabelle
Whiting, US
★★★★★ 4
Interesting
Format: Kindle
This was a very captivating book once you got into it thoroughly. But the third person perspective was a bit hard to get used to. But as you got into it and followed the different characters, it was interesting and filled with intrigue, conflict and forbidden love. I can’t wait to read the next one and to complete the series.
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