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Description
Water Pump Repair Kit – Fits Yamaha 9.9HP & 15HP 4-Stroke Outboard Engines (Replaces 63V-W0078-01-00, 63V-W0078-00-00)Water Pump Repair Kit Fits Yamaha 9. 9HP & 15HP 4 Stroke Outboard Engines This water pump repair kit is designed for Yamaha 9. 9HP and 15HP 4 Stroke outboard engines from 1996 to present, including F15, F9. 9, and high thrust T9. 9 models. It provides the necessary components to restore your engine's cooling system for optimal performance and reliability. This kit serves as a direct aftermarket replacement for Yamaha OEM parts 63V W0078 01 00 and 63V
Water Pump Repair Kit – Fits Yamaha 9.9HP & 15HP 4-Stroke Outboard Engines
This water pump repair kit is designed for Yamaha 9.9HP and 15HP 4-Stroke outboard engines from 1996 to present, including F15, F9.9, and high-thrust T9.9 models. It provides the necessary components to restore your engine's cooling system for optimal performance and reliability.
This kit serves as a direct aftermarket replacement for Yamaha OEM parts 63V-W0078-01-00 and 63V-W0078-00-00. It also cross-references with Sierra 18-3433, Sierra 18-3412 (with housing), and SeaSierra equivalents.
- Engineered for a direct replacement fit to restore cooling performance.
- Available in two versions: a full kit with housing or a basic kit without housing.
- Restores cooling system function to prevent engine overheating.
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
| Brand | Part Number |
|---|---|
| Yamaha | 63V-W0078-01-00 |
| Yamaha | 63V-W0078-00-00 |
| Sierra | 18-3433 |
| Sierra | 18-3412 (with housing) |
| SeaSierra | 18-3412 |
| SeaSierra | 18-3433 |
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 | F15 | 15 | 4-Stroke | 1998–2004 | 63V-W0078-01-00, 63V-W0078-00-00 | |
| Yamaha | F9.9 | 9.9 | 4-Stroke | 1996–2004 | 63V-W0078-01-00, 63V-W0078-00-00 | |
| Yamaha | F15 | 15 | 4-Stroke | 2005–Present | 63V-W0078-01-00, 63V-W0078-00-00 | "2006 and Later" mentioned in sources |
| Yamaha | F9.9 | 9.9 | 4-Stroke | 2005–Present | 63V-W0078-01-00, 63V-W0078-00-00 | "2006 and Later" mentioned in sources |
| Yamaha | T9.9 | 9.9 | 4-Stroke | 1996–Present | 63V-W0078-01-00, 63V-W0078-00-00 | High thrust models |
Technical Specifications
| Specification | Value |
|---|---|
| Product Type | Water Pump Impeller Repair Kit |
| Installation | Direct OEM replacement |
| Housing Material | Metal/Aluminum (varies by kit version) |
| Housing Color | Silver |
| Weight | 0.270 kg (0.595 lb) |
| Warranty | 1 Year (varies by distributor) |
| Other Technical Attributes | Two versions available: with or without housing |
Package Contents
This kit is available in two versions. Please select the correct version for your needs.
Kit With Housing (Replaces Sierra 18-3412):
- 1 x Impeller (18-3040)
- 1 x Insert Cup (18-3444)
- 1 x Water Pump Housing (18-3356)
- 1 x Impeller Plate (18-3195)
- 1 x Water Seal Damper (18-1833)
- 1 x Impeller Key
Kit Without Housing (Replaces Sierra 18-3433):
- Includes essential components such as the impeller, gaskets, and seals for a repair when the original housing is not damaged. Contents may vary; verify parts against your needs before ordering.
Installation Guide
Professional installation is recommended. The following are general steps and may not be specific to your exact model.
- Disconnect the spark plug leads and battery cables for safety.
- Drain the gearcase oil from the lower unit.
- Unbolt and carefully remove the lower unit (gearcase) from the outboard's midsection.
- Place the lower unit on a workbench. Unbolt and remove the old water pump housing.
- Note the orientation of the old parts as you remove the impeller, wear plate, and gaskets.
- Clean all mating surfaces thoroughly, removing any old gasket material or sealant.
- Install the new lower gasket, wear plate, and impeller key.
- Install the new impeller. Turn the driveshaft clockwise while pushing down to seat the vanes correctly.
- Fit the new insert cup into the housing, and slide the new housing assembly down over the impeller.
- Apply a light coat of marine-grade grease or soap to the inside of the housing to help seat the impeller.
- Bolt down the new housing to the specified torque.
- Reinstall the lower unit, refill with fresh gear lube, and test engine operation in water, ensuring a steady stream from the tell-tale.
Troubleshooting & FAQ
Q: How do I confirm this kit fits my engine?
A: This kit is specifically for Yamaha 9.9HP and 15HP 4-Stroke models from 1996 to present. Please review the "Compatible Engine Models" table and cross-reference your engine's model and year. The kit replaces OEM part numbers 63V-W0078-01-00 and 63V-W0078-00-00.
Q: What is the difference between the kit with housing and the kit without?
A: The full kit (replaces Sierra 18-3412) includes the metal water pump housing. The basic kit (replaces Sierra 18-3433) does not. You only need the basic kit if your existing housing is in good condition, free of cracks, corrosion, or warping.
Q: How often should I replace my water pump impeller?
A: For preventative maintenance, it is recommended to inspect the impeller annually and replace it every 1-2 years or every 100-200 hours of operation, whichever comes first. Service intervals should be shorter for engines used in saltwater or sandy/silty conditions.
Q: What are the symptoms of a failing water pump?
A: The most common signs include the engine overheating at idle or low speeds, or a weak or non-existent water stream from the "tell-tale" outlet port. A brittle, cracked, or deformed impeller found during an inspection also indicates an immediate need for replacement.
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:
- 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
4.9 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
This may just be my new favorite YA Fantasy series!
Format: Hardcover
*May contain spoilers
Six of Crows is one of those books that I could truly kick myself for waiting so long to read. Now that I’ve finally finished reading it, all I keep thinking is what a fool I was to deprive myself of one of the most original and amazing fantasy stories I’ve ever read. I feel like I’m not even going to begin to do this book justice, but hopefully, since I’m pretty sure I’m one of the last people on the planet to actually read it, you guys will all just nod your heads in agreement because you already know why Six of Crows is such a fabulous read.
For those unfamiliar with the basic storyline, Six of Crows follows Kaz Brekker, a teenage criminal mastermind, who has been offered an opportunity to achieve wealth beyond his wildest dreams. How? By completing what can probably best be described as Mission Impossible. He has to break into the Ice Court, a heavy guarded military stronghold that has never successfully been broken into before. Once inside, his mission is to locate and smuggle out a scientist who is being held hostage there because he possesses knowledge on how to amplify and weaponize magic. Kaz knows enough about the dangers of the Ice Court to know that, without the right team, this heist is going to be nearly impossible, possibly even a suicide mission. Lucky for Kaz though, he knows exactly who the right team is: a deadly gang of young thugs, thieves, and runaways who are just desperate enough to agree to be part of this crazy mission.
LIKES
What I loved most about Six of Crows are the characters. Leigh Bardugo has crafted some of the most fascinating and unique characters I’ve come across in YA fantasy. I always enjoy stories that feature an anti-hero and with Kaz and his “Crows,” we have 6 anti-heroes! I love anti-heroes because they’re always such complex characters and these characters are no different. What each of the Crows have in common is that they have no family and they’ve each had to do some pretty awful things in the name of survival, including resorting to thievery and murder. Through flashbacks that give us backstory on each of the characters, however, Bardugo manages to make this gang of thugs so sympathetic that you can’t help but fall in love with them. I also liked the angle that each character seemed to have their own, sometimes selfish motives, for wanting to be a part of Kaz’s mission and it added an element of suspense at times, as I wondered if someone would sabotage the mission to serve their own needs.
It’s hard to pick a favorite character because they’re all so badass, but Kaz is definitely near the top of my list. As I’ve already mentioned, he’s a criminal mastermind. Even though he’s a teenager, his reputation precedes him and he is feared by many in Ketterdam, the city where the story takes place. Kaz can be as greedy as he can be cruel, but he’s also so brilliant, brazen, and daring that you can’t help being drawn to him. Kaz is also haunted by events from his past that left him alone and destitute, and he’s highly motivated by the desire for revenge against the man he holds responsible for what happened.
In addition to Kaz, there are also two badass female characters, Inej and Nina. Inej, known as the wraith, has a reputation for being somewhat of a ninja. Kaz calls her his spider because she can climb her way pretty much anywhere and can do so undetected, a very handy skill in their line of “work.” She’s also very skilled with knives and is perhaps the most murderous member of Kaz’s team. I just loved watching her in action as she cut down anyone who posed a threat to the team. What made Inej especially fascinating to me was the connection between her and Kaz. As much as Kaz tries to be all business, all the time and never show any emotion or weakness, it’s clear that he has a soft spot when it comes to Inej and her safety. It’s also pretty clear that there’s a good chance the feeling is mutual.
Nina is what is known as a Grisha, which means she possesses magical abilities. For the purposes of Kaz’s mission, Nina can use that magic to do useful things like slow people’s heartrates down until they lose consciousness. She can also use her powers for healing purposes, also handy when you’re on a super-dangerous mission. As we learn from her backstory, Nina’s people have been persecuted for years because of their magic -- imprisoned, tortured, and even burned at the stake. Because the Grisha are the ones whose magic would be weaponized, Nina has personal reasons for wanting to take part in this mission.
Matthias is one of the characters that intrigued me the most. At first, I couldn’t stand him, but the more I got to know about him, the more I just grew to adore him. Kaz recruits him by breaking him out of jail and offering him a pardon for his crimes in exchange for his help with the mission. Kaz sees Matthias as one of the biggest assets to the team because he used to work in the Ice Castle and can therefore give them the overall layout of the place, how the security works, etc. Matthias is torn because he knows he should be loyal to the Ice Castle, but at the same time, how can you turn down a chance to be pardoned so that you can get your life back? What makes the whole situation even more complicated is that he and Nina have shared history and he holds her responsible for his imprisonment. Tension, much? I swear I was convinced those two were going to kill each other for about half the book! Beneath all that hate they seemed to have for each other though, you could sense there was something more, an almost smoldering attraction for one another. Let me tell you – I’m not usually big on romance, but I was shipping the heck out of Nina and Matthias!
Jesper and Wylan. While these two guys were clearly assets to the team as well with their knowledge of weapons and explosives, respectively, what I loved most about Jesper and Wylan was that they provided a bit of comic relief where the other characters were so intense all the time. Jesper and Wylan teased each other relentlessly and their banter was just hilarious at times.
The world building in Six of Crows is also top notch. Bardugo paints a vivid picture of Ketterdam with its rival street gangs swarming around duking it out for power. It’s a dark and gritty world, as well as a dangerous one, filled with assorted thieves, predators, and traitors. It’s hard to know who, if anyone, can be trusted. The atmosphere definitely creates a sensation that all of the characters are vulnerable to attack by anyone anywhere so they have to be in survival mode at all times.
The Grisha magic system is also well thought out and vividly drawn. I went into Six of Crows without having read the Grisha series, which was probably a mistake as I’m sure it would have further enriched my understanding of the Grisha magic and their history, but even without having read it, I still felt like I completely understood the magic and why it would be such a valuable weapon if it could be amplified and harnessed. Imagine practically indestructible armies of Grisha fighting on your behalf. You’d be unstoppable.
Action, Action, Action! As I’m sure you can imagine just based on the details of their mission, Six of Crows is truly action-packed. There are endless twists and turns, obstacles that need to be overcome, enemies that need to be taken out, plans that fall apart and then need to be improvised. Although the novel starts out at a fairly slow pace as we are meeting each character and establishing the world of Ketterdam, once Kaz and his gang get started on their missions, it’s like jumping on a thrill ride that doesn’t stop until the final page.
DISLIKES
I can’t really say this is a dislike of the book, but it did take me about a hundred pages or so to really become invested in the characters and get sucked into the story. Again, I’m chalking up my slow start to needing extra time to understand the Grisha magic and how it worked because I didn’t read the Grisha trilogy first. Once I did get sucked in, however, there was no stopping me. It probably took me 3 or 4 days to get to page 100, but then I inhaled the last 300 or so pages in another day and a half. I guess my advice would if you are struggling to get into it, stick with it until they actually get started with the planning of their mission. It might be a slow build in the beginning, but it’s a wild ride from that point to the very end.
FINAL THOUGHTS
I truly loved pretty much everything about Six of Crows, hence why I’m kicking myself for having waited so long to read it. Up until now, Victoria Schwab’s Shades of Magic series has been, hands down, my favorite YA fantasy series. I have to say though, Six of Crows is seriously giving it a run for its money.
RATING: 4.5 STARS
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Reviewed in the United States on June 23, 2017
★★★★★ 3
Adult Fiction disguised as YA
Format: Kindle
When you first read the blurb and or the initial chapters of Crows, you’d think this was an adult fantasy book. The book even reads like adult fantasy, until you discover it’s anything but.
I think the biggest plot twist to this is in the way the author matter-of-factly tells you the exact age of her characters and its always coupled after explaining that characters extraordinary background.
Somehow it’s possible to be a seasoned assassin, rogue or racketeer (or all three, in that order) at just 13-17 years old.
Somehow you can live the life of a jaded 50-year-old at the ripe ol’ age of 12.
Somehow all the adults are either too rich, too dense or too dead (or all three, in that order) to operate a lucrative underground business, but kids are exceptionably capable.
Somehow it’s possible to be a father-figure to people the same age as you.
I’m specifically talking about Kaz here. He’s like that hardnose uncle who grunts all the time and tells you only what he wants you to hear. I loled each time he scolded a member of his crew.
Initially (before I knew the ages of these people) I thought Kaz & Inej’s relationship was more a teacher/mentor relationship, but then it morphed into this awkward romance where Kaz has less personality than a rubber ducky and Inej a lukewarm glass of water. To be fair, Inej got better as the story progressed, becoming the only one I really liked.
To the author’s credit, she does make a point to explain Numbuh One—I mean, Kaz’s abnormal cynical mannerism. But then the other characters (who are younger btw) act similarly. What’s their excuse? It was jarring to get behind, but what aided me through was that I just pictured everyone looking like the main cast from Kids Next Door and it helped tremendously!
Matthidus and Nina are virtually the same character. Their chapters were a drag on the narrative due to the fact that these two NEVER STFU about what they did to one another. It’s the “woe, it’s me” amped up to a thousand.
Jesper and Wylan were cool… that’s all I have to say about them.
Never at one point did I have a liking to any of the characters (besides Inej), neither did I feel they were ever in any real danger. Kaz is a walking-talking dues ex machina. The characters find themselves in a bind and he already has the solution to their problems. He’s like Superman morphed with Batman while the other characters are just your bog standard Metropolis denizens who constantly need saving or guidance.
In a nutshell, he’s a Mary Sue.
I found the pacing bogged down to the point that it was hard to keep my eyes open while reading. Not because it’s badly written but because the author constantly reverts back to the characters’ backstory over and over again. There would be a needless flashback in the middle of a fight scene. Characters near death randomly float off to dream land while getting the crap beat out of them. It was jarring.
Closing remarks
All-in-All, Crows is a unique book. I can’t really talk about the plot without spoiling anything, but it’s innovative and engaging. I can say the book is worth your time if you can circumvent the kids playing grownup, then you should enjoy it.
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Reviewed in the United States on March 28, 2019
★★★★★ 5
Addicting!
Format: Kindle
I could not stop reading. It was so refreshing to have a series start so completely different than most fated mates/fantasy academy rh I’ve been reading. From the desert scenery to the magic and feeding plus the psychological trauma the characters are there to deal with. Pandora is absolutely adorable and I totally relate to hiding behind my hair. I love that she’s literally the most scary type of demon but it’s not the usual “badass mc” persona (which I do love a badass that can fend for herself and kick ass from the start but it was a nice change of pace). I’m not usually a big fan of bully within the harem but each character has their reasons for their actions and also conflicting feelings about them. I adore Dex and Reed! Complete opposites but their personalities and inner monologues made them instant favs. I can’t wait to see the character growth with the guys and continued strength for Pandora.
The captivating characters and references to the Fate Hallow series added so much depth and now I need another reread while I wait for book 2. The concept of magic and the unique feeding habits of the demon characters were intriguing. I can't wait for the next book to continue this thrilling journey.
In summary, this book is a must-read for fantasy and magic academy rh fans. With its enchanting characters, nods to the Fate Hallow series, and imaginative concepts, it offers an immersive reading experience that hwill leave you craving for more.
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Reviewed in the United States on June 5, 2024
★★★★★ 4
Best academy I've read this year
Format: Kindle
I need a few things when it comes to a first book of a PNR romance series
1-Good world building (which this totally did)
2-An FMC I can root for (oh hell yes, Pandora is someone I can cheer for)
3-Good drama (can you say GROVEL BOYS!)
4-Enough story to make you feel like you really read something with meat (you saw this book is like 600 pages, yeah?)
5-A hook at the end so I want more! (please, Lyra, gimmie more?!? I need more!!)
Be aware this book is a slow burn, but damn do I feel like there'll be some big payoff when it finally happens. Who doesn't like the buildup?
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Reviewed in the United States on June 4, 2024
★★★★★ 5
Pandora’s Pain, Power, and Passion
Format: Kindle
I absolutely love this new world Lyra Winters has created! The spin on a Demon Academy setting was fresh, unique, and completely addictive.
Pandora is a character who immediately captured my heart. Thought to be powerless and enduring years of brutal abuse from her mother, it’s no surprise that her powers emerge at the exact moment she needs them most. After her mother’s death, Pandora discovers her father is none other than Death himself, a soul eater with a dark legacy. Her journey at the academy is anything but easy, filled with challenges tied to her father’s infamous reputation, her barely controlled abilities, and the cruelty of those around her.
Pandora is easy to root for, you feel every ounce of her pain, resilience, and growth. Along the way she meets Reed, a half-human dream demon who’s kind, steady, and the kind of friend everyone wishes they had. There’s also Hunter, a vengeance demon and counselor connected to her father, who adds another intriguing layer to her story. Then there are the bullies: Dexter, a brooding shadow demon; Bram, a chaos demon with a drinking problem and deep hatred for demon nobility; and Skel, a fear demon wrestling with his own darkness. They might hurt her, but they also can’t seem to stay away when she’s in danger, making for some deliciously complicated dynamics.
This book hits so many of my favorite tropes: friends to lovers, enemies to lovers, and of course, the irresistible “who hurt you?” storyline. I devoured it, and I’m already diving straight into book two!
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Reviewed in the United States on September 4, 2025