SKU: 13069848154

Water Pump Impeller Kit – Fits Yamaha F30, F40, T25 4-Stroke Outboard (Replaces 66T-W0078-00)

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Description

Water Pump Impeller Kit – Fits Yamaha F30, F40, T25 4-Stroke Outboard (Replaces 66T-W0078-00)Water Pump Impeller Kit Fits Yamaha F30, F40, T25 4 Stroke Outboard (Replaces 66T W0078 00) This water pump impeller service kit provides a complete solution for replacing the water pump components on select Yamaha 4 stroke outboard engines. It is designed to fit T25, F30, and F40 horsepower models manufactured primarily between 2000 and 2008, with some models having extended compatibility. Please consult the engine compatibility list to verify your

Water Pump Impeller Kit – Fits Yamaha F30, F40, T25 4-Stroke Outboard (Replaces 66T-W0078-00)

This water pump impeller service kit provides a complete solution for replacing the water pump components on select Yamaha 4-stroke outboard engines. It is designed to fit T25, F30, and F40 horsepower models manufactured primarily between 2000 and 2008, with some models having extended compatibility. Please consult the engine compatibility list to verify your specific model and year.

Engineered as a direct replacement for OEM assemblies, this kit ensures proper fit and function, restoring your cooling system's performance and reliability. It is compatible with several Yamaha outboard engine configurations and provides a comprehensive set of parts for a full service.

  • Includes a new impeller, housing, wear plate, gaskets, and all necessary hardware for a complete installation.
  • Made with marine-grade metal and a durable neoprene rubber impeller to withstand the harsh saltwater environment.
  • Direct replacement installation requires no specialized modifications.

Part Number Cross-Reference

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

Brand Part Number
Yamaha 66T-W0078-00
Yamaha 66T-W0078-01
Yamaha 66T-W0078-A0
Sierra 18-3413
Sierra 18-3440
Mallory MAL9-48610

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 T25 25 4-Stroke 2001-2004 66T-W0078-00
Yamaha T25 25 4-Stroke 2005-2008 66T-W0078-00
Yamaha T25LA 25 4-Stroke 2009-2019 66T-W0078-00 Extended compatibility per Soxa Marine
Yamaha T25TLRZ 25 4-Stroke 2001 66T-W0078-00
Yamaha T25TLRA 25 4-Stroke 2002 66T-W0078-00
Yamaha T25TLRB 25 4-Stroke 2003 66T-W0078-00
Yamaha T25TLRC 25 4-Stroke 2004 66T-W0078-00
Yamaha T25TLR, T25TLRD 25 4-Stroke 2005 66T-W0078-00
Yamaha T25TLR 25 4-Stroke 2006 66T-W0078-00
Yamaha F30 30 4-Stroke 2001-2004 66T-W0078-00
Yamaha F30TLR, F30TLRD 30 4-Stroke 2005 66T-W0078-00
Yamaha F30TLRZ 30 4-Stroke 2001 66T-W0078-00
Yamaha F30TLRA 30 4-Stroke 2002 66T-W0078-00
Yamaha F30TLRB 30 4-Stroke 2003 66T-W0078-00
Yamaha F30TLRC 30 4-Stroke 2004 66T-W0078-00
Yamaha F40 40 4-Stroke 2000-2004 66T-W0078-00
Yamaha F40 40 4-Stroke 2005-2008 66T-W0078-00
Yamaha F40TLRY, F40MLHY, F40MSHY, F40ESRY 40 4-Stroke 2000 66T-W0078-00
Yamaha F40ESRZ, F40MSHZ, F40TLRZ, F40MLHZ 40 4-Stroke 2001 66T-W0078-00
Yamaha F40ESRA, F40MJHA, F40TLRA, F40MSHA, F40MLHA 40 4-Stroke 2002 66T-W0078-00
Yamaha F40MSHB, F40TLRB, F40MLHB, F40ESRB, F40MJHB, F40EJRB 40 4-Stroke 2003 66T-W0078-00
Yamaha F40MSHC, F40MJHC, F40EJRC, F40MLHC, F40TLRC 40 4-Stroke 2004 66T-W0078-00
Yamaha F40EJR, F40MSH, F40TLR, F40MJH, F40MLH variants 40 4-Stroke 2005 66T-W0078-00 Multiple variants with different suffixes
Yamaha F40EJR, F40MJH, F40MLH, F40MSH, F40TLR 40 4-Stroke 2006 66T-W0078-00
Yamaha F40BMJH, F40BTLR, F40BMLH, F40BEJR 40 4-Stroke 2007 66T-W0078-00
Yamaha F40BTLR, F40BMLH 40 4-Stroke 2008 66T-W0078-00
Yamaha 40X, 40XWT, E40X 40 2-Stroke 1998+ 66T-W0078-00 Per JLM Marine

Technical Specifications

Specification Value
Product Type Water Pump Impeller Kit / Water Pump Service Kit
Installation Direct replacement for OEM pump components
Housing Material Marine-grade metal (pump housing) with neoprene rubber impeller
Dimensions 52mm impeller diameter × 19mm width (impeller only)
Other Technical Attributes 6-blade impeller design with 16mm shaft size, includes woodruff key

Package Contents

This comprehensive kit includes all the necessary components for a full water pump service:

  • 1 x Pump Housing (66T-44311-00-00)
  • 1 x Water Pump Impeller (6H4-44352-00-00/6H4-44352-02-00)
  • 1 x Cartridge Insert (63D-44322-00-00)
  • 1 x Outer Plate (66T-44323-00-00)
  • 1 x Gasket (63D-44316-00-00)
  • 1 x Cover/Pump Housing Cover (63D-44312-00-00)
  • 1 x Woodruff Key (90280-03M03-00)
  • 1 x O-ring (93210-59MG7-00)
  • 1 x Seal/Water Seal Damper (663-44366-00-00)
  • 4 x Bolts/Washer (90119-08M15-00)

Installation Guide

  1. Disconnect Power: Disconnect the battery and shift the outboard into neutral.
  2. Remove Lower Unit: Remove the bolts securing the lower unit (gearcase) to the engine's upper section and carefully lower it.
  3. Access Pump: Unbolt and remove the old water pump housing to expose the impeller.
  4. Remove Old Components: Take out the old impeller, woodruff key, wear plate, and any gaskets or seals. Clean all mating surfaces thoroughly.
  5. Install New Components: Place the new gasket and wear plate onto the driveshaft. Slide the new woodruff key into its slot on the shaft.
  6. Install Impeller: Lubricate the new impeller and the inside of the pump housing with marine grease. Install the impeller onto the driveshaft, turning the shaft clockwise to bed the vanes correctly.
  7. Install Housing: Fit the new pump housing cover, insert, and o-ring/seals. Secure the new housing with the provided bolts, tightening them to the manufacturer's recommended torque.
  8. Reassemble & Test: Reinstall the lower unit, ensuring the water tube aligns correctly. Once assembled, start the engine with a proper water supply and verify a steady stream of water from the tell-tale port.

Troubleshooting & FAQ

Q: How can I be sure this kit fits my exact Yamaha engine?
A: The most reliable method is to check your engine's model and year against our compatibility table. You can find your model information on the engine's identification tag. For additional certainty, use the Yamaha Serial Number Guide and Parts Catalog links provided above to cross-reference the OEM part number (66T-W0078-00) with your specific engine diagram.

Q: What are the signs of a failing water pump impeller?
A: Common symptoms include a weak or intermittent water stream from the "tell-tale" outlet, engine overheating alarms, or visible cracks, stiffness, or missing blades on the old impeller upon inspection.

Q: How often should I replace the water pump impeller?
A: As a general maintenance rule, it is recommended to inspect and/or replace the impeller every 1-2 years or every 100-200 hours of use, depending on operating conditions (e.g., saltwater vs. freshwater, sandy/silty water). Proactive replacement prevents engine damage from overheating.

Q: Is this an OEM part or an aftermarket part?
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: 13069848154

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4.9 ★★★★★
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Peter M
Houston, US
★★★★★ 3
I really want to love it... but the art...
Format: Hardcover
Batman and Robin, Vol 3: Batman & Robin Must Die include Batman and Robin #13-16, Batman the Return #, and concludes the Grant Morrison trilogy in B&R. The story here is great and I really want to love the comic, but the art makes some of this comic so hard to read. The majority of the art is done by Frazer Irving and if you have not seen any of his art search Frazer Irving Batman and see if you can stand it. If you can, read this comic. The story line is great, the villains are fantastic, the art gets better. I don't always hate Frazer Irving's art, in fact, I quite liked it for Klarion the Witch Boy in Seven Soldiers of Victory (another great comic) but in B&R I cannot stand it. At least I know that it is only a short time in the overall arc and that the story is so good that it makes it worth it. If you like Grant Morrison's Batman or don't mind the art, for sure read this. One last thing, events in this comic intersect with Batman: The Return of Bruce Wayne which should be read before reading B&R #15 to avoid spoilers. I generally read Vol 1 , Vol 2, Batman: TROBW, then Vol 3. This is only if you want the full Grant Morrison Batman arc detailed below. Pros: -B&R are still great -Story is fantastic -Grant Morrison Cons: -Grant Morrison -Frazer Irving's Art -Relatively Short *Morrison's Story Arc is as follows: Batman and Son (Included in Black Glove Deluxe Edition) Batman: The Black Glove Batman: RIP Batman: Batman and Time (or Final Crisis but still needs 701 and 702) Batman and Robin Volume 1-3 Batman: The Return of Bruce Wayne (Technically happens during Batman and Robin Volumes 1 and 2) Batman Incorporated (and Leviathan Strikes) Batman Incorporated Vol 1: Demon Star (New 52) Batman Incorporated Vol 2: Gotham's Most Wanted (New 52) A readers guide to Grant Morrison's Batman is a great help if you are looking at the whole series.
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Reviewed in the United States on August 26, 2016
S
Verified Purchase
Steve
Fort Morgan, US
★★★★★ 4
The Conclusion to an Excellent Story
Format: Hardcover
This is the third and final book of Batman and Robin in Grant Morrison's Batman RIP to Return of Bruce Wayne storyline. In this book you get a lot of kudos heading towards Dick from both Alfred and Jim Gordan. You also get some very interesting inter-play between Dick and The Joker (from Dick stating he's had the Joker figured out since he was 12 and the Joker stating that Dick was too similar to himself to be fun). On the other hand, some of the things done by Dick seem odd. He was captured by Hurt. How did he expect to escape being shot in the head? He left Damian alone with the Joker. He said he understood the Joker but was then unsure if the Joker was helping him or not. Nothing major, just some things I didn't like. The story on a whole was excellent and a good conclusion. About the only thing I disliked a lot was the art work. The other 2 books were a lot better in this regard. Buy it for the story, not the art.
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Reviewed in the United States on March 2, 2012
K
Verified Purchase
Kindle Customer
Belleville, US
★★★★★ 5
Fantastic
Format: Hardcover
The final product of a years long storyline, Batman and Robin Vol 3 ends the mind melting adventure Grant Morrison started a few years back, concluding Batman and Robin's fight against the Black Glove and bringing Bruce Wayne back into the spotlight. If you haven't read any of Batman and Robin as well as Batman R.I.P and Final Crisis, then don't get this because you'll be confused as what the hell is going on. Of course you can still get it, but you'll be missing on vital details and will experience a different story than others who have read anything up to this point. Everything is clearly spelled out, a rare feat by Morrison who can't help but make everything sound unintelligible and mind boggling. It's a race against the clock to save Gotham City from the Black Glove and the Joker, who have entered a dangerous between each other that will destroy Gotham if Batman and Robin can't stop them. There isn't a dull moment in anywhere in this book, every moment is filled with glee, things are kept in a fast pace, leading up to the grand finale that brings a monumental change that is shocking. Probably the weirdest part of the comic is the art, it's a mix between cel shaded and paint, people's faces usually have goofy looks on them that can be distracting. Looking at the unusual art takes awhile to get used to, but other than that the comic is amazing. Definitely a must read for Batman fans.
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Reviewed in the United States on August 20, 2011
M
Verified Purchase
Michael P. Lefand
Battle Creek, US
★★★★★ 5
Superman, Superboy, Supergirl, Krypto, a little of everything.
"Superman in the Fifties" is a collection of 17 stories from 1950 to 1959 reprinted in color. For me it was a nostalgic return to when I was a child and able to purchase 10 comics for a dollar off a turning rack (no sales tax either) at the local soda shop. The comics from the fifties served as an escapism for much of the youth at the time that was coming of age with the awareness that we could be threatened by nuclear attack at any time. Bomb shelter construction could be found in Popular Science magazines, and drills were performed in schools with students going into halls and crouching down and covering their heads or hiding under desks. A hero was needed, one with super powers who could make the world right. We could all dream. Superman, "Faster than a speeding bullet, more powerful than a locomotive, able to leap tall buildings in a single bound...fighting a never ending battle for truth, justice, and the American way." Sorry, just had to put that TV intro in from the 50's. The stories may seem dated, but that is part of the mystique of reading comics that are reprinted. The titles in this volume are: - Three Supermen From Krypton! - The Menace From The Stars! - The Girl Who Didn't Believe In Superman! - Superboy's Last Day In Smallville! - The Ugly Superman! - Superman's Big Brother! - The Super-Dog From Krypton! - Titano, The Super-Ape! - The Supergirl From Krypton! - Superman's Super-Magic Show! - The Super-Duel In Space - The Battle With Bizarro! - The Bride Of Bizarro! - The End Of The Planet! - Superman And Robin!! - The Stolen Superman Signal - The Girl In Superman's Past My favorite was "The Super Duel in Space" with Brainiac reducing some of Earth's cities and putting them in bottles. It was a good change up from the usual fiction, and non-fiction that I read. It provides plenty of background about Superman for young readers with terrific art that was hand drawn, unlike most modern comics that are created on computers. The stories are a very good sampling of "Superman" from the fifties. I look forward to reading "Superman in the Sixties." I give "Superman in the Fifties" 5 stars.
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Reviewed in the United States on September 15, 2011
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Verified Purchase
David W. Nesbitt
Lowell, US
★★★★★ 5
This is perfect - I just wish they would reprint all of the 1950's and 60's stories!
This is great - wish I had more Superman stories from the 1950's to read!! I was born in 1952 so this is something right up my alley. I am a big Superman fan and had most of the mid to late 1950'2 issues until my mom burned them when I went away to college. I understand why but still wish I had them - for many different reasons. The coloring is bright and spot-on. I even remember most of these stories - I know it's been more than 50 years ago but they were a big part of my early life. All of the stories are least good and couple are truly great. Some of the plots are little silly by todays standards but things have most definitely changed since they were written. IF you love Superman, grew-up in the 50's or just anything historical you will love this! I just wish they would reprint all the 50's and 60's stories. That is something I would most certainly buy!! My rating for this is a perfect 10 out of 10 - for me it's perfect - all I want is MORE of this!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 21, 2016

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