SKU: 46491803667

Water Pump Impeller Kit – Fits Yamaha 40/50 HP 2-Stroke (1994-2005) & F40/F50/F60 4-Stroke (1996+) (Replaces 63D-W0078-01-00)

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Description

Water Pump Impeller Kit – Fits Yamaha 40/50 HP 2-Stroke (1994-2005) & F40/F50/F60 4-Stroke (1996+) (Replaces 63D-W0078-01-00)Water Pump Impeller Kit Fits Yamaha 40 50 HP 2 Stroke & F40 F50 F60 4 Stroke This water pump impeller repair kit is designed for a wide range of Yamaha outboard engines, including Yamaha 2 Stroke 40 50 HP (19942005) models such as the C40, P40, C50, and P50 series. It also fits Yamaha 4 Stroke F40 (1999), F50 (1997 and newer), and F60 (2002 and newer) outboard engines. It serves as a direct replacement for Yamaha OEM part numbers 63D W0078 01 00, 63D

Water Pump Impeller Kit – Fits Yamaha 40/50 HP 2-Stroke & F40/F50/F60 4-Stroke

This water pump impeller repair kit is designed for a wide range of Yamaha outboard engines, including Yamaha 2-Stroke 40/50 HP (1994–2005) models such as the C40, P40, C50, and P50 series. It also fits Yamaha 4-Stroke F40 (1999), F50 (1997 and newer), and F60 (2002 and newer) outboard engines.

It serves as a direct replacement for Yamaha OEM part numbers 63D-W0078-01-00, 63D-W0078-03-00, 63D-W0078-02-00, and 63D-W0078-00-00, ensuring a precise fit and restoring cooling system performance. This kit provides all the necessary components for a complete and professional water pump service.

  • Comprehensive Kit: Includes impeller, housing, gaskets, plate, and hardware for a full overhaul.
  • Direct Replacement: Engineered to meet OEM specifications for a direct, hassle-free installation.
  • Quality Manufacturing: Produced in an ISO9002-certified facility to ensure reliability and durability.

Part Number Cross-Reference

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

Brand Part Number Notes
Yamaha 63D-W0078-01-00 Supersedes 63D-W0078-00-00, 63D-W0078-02-00, 63D-W0078-03-00
Sierra 18-3415 / 18-3434 Aftermarket replacement
GLM 12276 Aftermarket replacement

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.

Yamaha 2-Stroke Models

Brand Model Rated HP Stroke Years OEM Part No.
Yamaha 40 40 2-Stroke 1995-2005 63D-W0078-01-00
Yamaha C40 40 2-Stroke 1997-2003 63D-W0078-01-00
Yamaha P40 40 2-Stroke 1998 63D-W0078-01-00
Yamaha 50 50 2-Stroke 1998-2009 63D-W0078-01-00
Yamaha C50 50 2-Stroke 1998-2001 63D-W0078-01-00
Yamaha P50 50 2-Stroke 1995-1996 63D-W0078-01-00
Yamaha 40EJRV 40 2-Stroke 1997 63D-W0078-01-00
Yamaha 40EJRW 40 2-Stroke 1998 63D-W0078-01-00
Yamaha 40EJRX 40 2-Stroke 1999 63D-W0078-01-00
Yamaha 40ELRV 40 2-Stroke 1997 63D-W0078-01-00
Yamaha 40ELRW 40 2-Stroke 1998 63D-W0078-01-00
Yamaha 40TLRV/40TLRW/40TLRX/40TLRY/40TLRZ 40 2-Stroke 1997-2001 63D-W0078-01-00
Yamaha 40TLRA/40TLRB/40TLRC/40TLRD 40 2-Stroke 2002-2005 63D-W0078-01-00
Yamaha 50TLRA/50TLRB/50TLRC/50TLRD 50 2-Stroke 2002-2005 63D-W0078-01-00
Yamaha T50TLRC/T50TLRV 50 2-Stroke 1997-2004 63D-W0078-01-00

Yamaha 4-Stroke Models

Brand Model Rated HP Stroke Years OEM Part No.
Yamaha F40 40 4-Stroke 1999 63D-W0078-01-00
Yamaha F40TLRX 40 4-Stroke 1999 63D-W0078-01-00
Yamaha F50 50 4-Stroke 1997+ 63D-W0078-01-00
Yamaha F50TLRV/F50TLRW/F50TLRX/F50TLRY/F50TLRZ 50 4-Stroke 1997-2001 63D-W0078-01-00
Yamaha F50TLRA/F50TLRB/F50TLRC/F50TLRD 50 4-Stroke 2002-2005 63D-W0078-01-00
Yamaha F50LA/F50LB 50 4-Stroke 2011-2016 63D-W0078-01-00
Yamaha F60 60 4-Stroke 2002+ 63D-W0078-01-00
Yamaha F60TLRA/F60TLRB/F60TLRC/F60TLRD 60 4-Stroke 2002-2005 63D-W0078-01-00
Yamaha F60JB/F60LA/F60LB 60 4-Stroke 2011-2016 63D-W0078-01-00
Yamaha F60TJR series 60 4-Stroke 2003-2007 63D-W0078-01-00

Technical Specifications

Specification Value
Other Technical Attributes ISO9002 certified factory production (JLM Marine)

Package Contents

  • 1 x Cartridge Insert (63D-44322-00-00)
  • 1 x Impeller (6H3-44352-00-00)
  • 1 x Water Pump Housing Cover (63D-44312-00-00)
  • 1 x Cartridge Outer Plate (63D-44323-00-00)
  • 1 x O-Ring (93210-59MG7-00)
  • 1 x Water Pump Gasket (63D-44316-00-00)
  • 4 x Bolts with Washers (90119-08M15-00)
  • 1 x Water Seal Damper 2 (663-44366-00-00)
  • 1 x Woodruff Key (90280-03024-00)

Installation Guide

  1. Safety First: Disconnect the battery and the spark plug wires before beginning work.
  2. Drain Gearcase Oil: Place a drain pan under the lower unit and remove the drain/fill screws to empty the gearcase oil.
  3. Remove Lower Unit: Unbolt the lower unit (outdrive) from the upper section of the engine. This may require removing a trim tab to access a hidden bolt.
  4. Access the Water Pump: With the lower unit removed, locate and unbolt the water pump housing cover.
  5. Inspect and Replace: Remove the old impeller, gaskets, plates, and seals. Clean all mating surfaces thoroughly, checking for corrosion or wear.
  6. Install New Components: Install the new components from the kit in the reverse order of disassembly. Lightly grease the new impeller and insert it while turning the driveshaft clockwise.
  7. Reassemble: Reinstall the water pump housing, ensuring bolts are torqued to the manufacturer's specification. Reattach the lower unit to the engine and refill the gearcase with fresh oil.
  8. Test Operation: Reconnect the battery and spark plugs. Start the engine using a water source (flushing muffs) and verify a strong, steady stream of water from the tell-tale outlet.

Troubleshooting & FAQ

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

A: The best way is to match your engine's model and year to the compatibility tables provided above. We also recommend using the official Yamaha Serial Number Guide and Parts Catalog linked above to cross-reference the OEM part number (63D-W0078-01-00) with your specific engine diagram.

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

A: Common indicators of a failing impeller include the engine overheating alarm sounding, a weak or intermittent water stream from the "tell-tale" outlet, or a temperature gauge reading higher than normal. Visual inspection during regular maintenance may also reveal cracked, brittle, or worn impeller vanes.

Q: How often should I replace the impeller?

A: As a general maintenance guideline, we recommend replacing the water pump impeller and gaskets every 1 to 2 years or every 100-200 operating hours, whichever comes first. This interval can be shorter if you frequently operate in sandy, silty, or saltwater conditions.

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: 46491803667

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4.9 ★★★★★
Based on 7 reviews
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B
Verified Purchase
Brian Kolley
Houston, US
★★★★★ 5
My 2018 Mustang GT BBQ Tick went away but came back.
Style: Modifier
Update 1-26-2019: The BBQ/Typewriter tick came back this morning. So, I'd say that if you're trying to use the Ceratec to quiet the tick, it will work for a little while, but will eventually return. I don't think there's anything else that can be done to quiet the tick and it's a crap shoot if you get it serviced. In my case, it only ticks during warm up after the transition from high idle, and goes away completely once the entire engine is fully warmed up, so I'm just going to live with it. I'm still giving the Ceratec a 5 because it did reduce my friction enough for a small MPG improvement, so I believe it works as advertised and I'm not going to blame them for not silencing the tick. Update 1-20-2019: After a few days with only the one bottle poured in, my tick came back. Since one bottle is only 1/2 the recommended concentration for the 10 quarts in a 2018 Mustang GT, I bought another bottle and added it and the tick is now gone again. We'll see if it lasts. I can tell you that my fuel economy has improved. I have a little over 11,000 miles now and I always display my fuel economy meter and I use it. I've never reset my average fuel economy meter since the day I bought the car new. I've been pretty well stuck at 21.6 MPG for the last couple months. Since I've put in the Ceratec, my average fuel economy has increased to 21.8 MPG, so it's jumped 0.2 MPG in roughly 2 weeks. With over 11,000 miles included in the average, it takes a pretty significant improvement in friction to make that average move that much in that short a time. Even if my tick comes back again, I'm sold on Ceratec for the friction reduction alone. I'll update the review again if the tick comes back. Original Review: My 2018 Mustang GT developed the infamous BBQ/Typewriter tick immedaitely after my first oil change. I used Mobil One synthetic at 3500 miles on my first oil change. I did my 2nd oil change at 10K miles with Mobile One, but the tick was still present. After seeing people on YouTube having success eliminating their tick with Ceratec and after reading the one other review of a 2018 Mustang GT owner here on Amazon, I decided to try it. I ordered 1 bottle. It arrived on a Friday and poured it in immediately after I got home from work. It's an hour drive one way to work, so the engine was at operating temperature, where, in my case, the tick goes away. I only get it when the engine switches from high idle to normal idle after a cold start and the tick is quite loud for at least the 15 minutes it takes for me to get to the drive through where I get my morning coffee, where I can really hear the tick echoing off the wall. After pouring it in, I started the car and let it idle, but didn't really notice any change. I then took it for a drive and did some hard pulls to get the engine to rev under load to the red line. After that, I put the car in the garage until I drove to work on Monday. When I went to the drive through to get my morning coffee, there was no tick! It was gone! I listened real hard, but all I could hear was the normal direct injector pump noise. Then, after my hour long drive to work, I left car running and got out to listen. With the hood closed, it was quieter than at any time since I bought it. It was virtually silent. Even the DI pump noise was barely audible. The car also sounded and felt different during the drive to work. The engine seemed like it was smoother somehow. It might have been my imagination, but after the silence in my parking spot at work, I wouldn't be surprised if the engine did run smoother. At any rate, I only used 1 bottle to treat the 10 quarts of oil, which is half the amount the mfg says to use. So, I'll see how long it lasts, but it definitely worked even at half its normal concentration. I highly recommend it for anyone who has the 2018 Mustang GT tick.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 14, 2019
M
Verified Purchase
Mike L
West Palm Beach, US
★★★★★ 5
Must have in modern high compression GDI engines!
Style: Modifier
So bought this for my new Mazda 3 Turbos' first oil change. I was originally going to use Liqui Moly MoS2, due to the OE Mazda oil using a very high Moly PPM (800ish) formula and not having easy access to a similarly formulated oil. After doing some more reading i decided to use Ceratec instead, mostly because it doesn't make the oil look super dark (for warranty purposes, If for some reason i do have a problem with the engin i don't want the dealer saying I just didn't change my oil). So initial results are awesome, the valve noise is pretty much gone. And the engin just feels smoother, and sounds like is not even trying when reving it out. With that success I bought another one for my girlfriends non turbo CX30 when i changed her oil. Her engine has always been just a little noisier than my old non turbo mazda 3, and my new Turbo model. I've used the same oil in both (Pennzoil Ultra Platinum 0w20 or 5w30 in the turbo). It had the normal lifter noise, but it always sounded raspy when accelerating hard, like it was really at the edge when floored. So as a before and after test I changed the oil fist with NO Ceratec, engin sounded happier, ran a little smoother, but basically the same as before, Normal stuff after an oil change. So I added the Ceratec, literally you could hear the lifter noise melt away as it mixed with the oil, I was in my garage so the effect was even more stark. The engine also idled smoother, to the point if you were in the car, you wouldn't know it was on without the engine RPM readout. So i took it for a test drive down the road and stepped on it after getting it up to Temp. The raspiness was completely gone, it sounded like it was happy as a clam reving right up to redline. This wasn't a "i think it might be better" differance, it was a night and day difference, a wow that impressive difference. As for fuel consumption reduction claims, i don't know yet, from what i read you need to dive it 300-400 miles to get a valid result. I only have 150ish on mine and 75 on hers. First impressions were really positive, highly recommend to anyone wanting to keep a car for a really long time. Only downside is the price, this stuff is really expensive... but i look at it like this, $600 over the life if the vehicle if you keep it to 150K miles, with 6k oil change intervals is pretty cheap insurance. compared to an engine rebuild.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 21, 2021
W
Verified Purchase
William L Rose Jr.
New York, US
★★★★★ 4
Results after 1500 miles....
Style: Modifier
Seems to have made my engine a little less noisy at startup.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 3, 2026
A
Verified Purchase
A. Mitchell
Chelsea, US
★★★★★ 5
Been Using For a good While
Style: Modifier
Always quality product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
S
Verified Purchase
StarMember
Phoenix, US
★★★★★ 5
¿Snake oil? At least it worked for me
Style: Modifier, Style: Modifier
Very cheap compared to buying it locally, here in my country. Used the Ceratec with the Leuchtlauf High Tech oil. 143K miles on my 2.5 mk6 Jetta. It started to make some tappet/lifters noise, very minimal but it was there. As soon as I started the engine, and about 30 minutes in , I could clearly hear the difference. How I heard the difference? With the hood closed now I can barely hear the engine, unless I put my ear close to the grille. Now I only hear the working injectors. Totally recommended. Can’t speak about gas consumption, I’ll have to drive 500-1000 miles to speak confidently. Recommended for giving older engines a longer lifespan. Update: After 15 days or so, and about 150-200miles later, I noticed my Jetta’s engine feels lighter and smoother. No placebo effect, it’s just there. Since I bought two Ceratec bottles, I used the second bottle on a Mitsubishi Outlander Sport with the Mivec 2.0 engine. These engines are quite noisy, specially the injection noises, and I had a very concerning lifters ticking. I did my oil change yesterday, and today the ticking is gone, all I did was use Liquimolys engine flush, Valvoline oil and the Ceratec. I’ll post an update if I get better fuel economy and smoothness on my Mitsu.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 12, 2026

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