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Description
Water Pump Impeller Repair Kit – Fits Yamaha 50-70 HP Outboards (Replaces 6H3-W0078-A0-00, 6H3-W0078-02-00)Water Pump Impeller Repair Kit Fits Yamaha 50 70 HP Outboards (Replaces 6H3 W0078 A0 00, 6H3 W0078 02 00) This aftermarket water pump impeller repair kit is designed for Yamaha 2 Stroke 6070 HP (19972003) and 4 Stroke 5060 HP High Thrust (1997present) outboard motors. It provides an essential solution for lower unit water pump maintenance and rebuilds. Direct replacements include Yamaha part numbers 6H3 W0078 00 00, 6H3 W0078 01 00, 6H3 W0078 02 00,
Water Pump Impeller Repair Kit – Fits Yamaha 50-70 HP Outboards (Replaces 6H3-W0078-A0-00, 6H3-W0078-02-00)
This aftermarket water pump impeller repair kit is designed for Yamaha 2-Stroke 60–70 HP (1997–2003) and 4-Stroke 50–60 HP High Thrust (1997–present) outboard motors. It provides an essential solution for lower unit water pump maintenance and rebuilds.
Direct replacements include Yamaha part numbers 6H3-W0078-00-00, 6H3-W0078-01-00, 6H3-W0078-02-00, 6H3-W0078-A0-00, as well as Sierra numbers 18-3466, 18-3461, and 18-3428-1.
- Complete water pump rebuild kit including impeller, gaskets, and hardware
- Fits installation on lower unit
- Compatible with both 2-Stroke and 4-Stroke Yamaha models
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
| Brand | Part Number |
|---|---|
| Yamaha | 6H3-W0078-00-00 |
| Yamaha | 6H3-W0078-01-00 |
| Yamaha | 6H3-W0078-02-00 |
| Yamaha | 6H3-W0078-A0-00 |
| Sierra | 18-3466 |
| Sierra | 18-3461 |
| Sierra | 18-3428-1 |
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 | 60F | 60 | 2-Stroke | 1997-2003 | 6H3-W0078-A0-00 | |
| Yamaha | 60TLR | 60 | 2-Stroke | 2001-2003 | 6H3-W0078-A0-00 | Including 60TLRZ (2001), 60TLRA (2002), 60TLRB (2003) |
| Yamaha | 70B | 70 | 2-Stroke | 1997-2003 | 6H3-W0078-A0-00 | |
| Yamaha | 70TLR | 70 | 2-Stroke | 1997-2003 | 6H3-W0078-A0-00 | Including 70TLRV (1997) through 70TLRB (2003) |
| Yamaha | C60TLR | 60 | 2-Stroke | 1997-2001 | 6H3-W0078-A0-00 | Models C60TLRV through C60TLRZ |
| Yamaha | C70TLR | 70 | 2-Stroke | 2000-2001 | 6H3-W0078-A0-00 | Models C70TLRY and C70TLRZ |
| Yamaha | P60TLH | 60 | 2-Stroke | 1997-1999 | 6H3-W0078-A0-00 | Models P60TLHV through P60TLHX |
| Yamaha | T50 | 50 | 4-Stroke | 1997-Present | 6H3-W0078-A0-00 | High Thrust models; includes T50TLRV through current |
| Yamaha | FT50 | 50 | 4-Stroke | 1997-Present | 6H3-W0078-A0-00 | High Thrust models; includes FT50B through current |
| Yamaha | F50TLH | 50 | 4-Stroke | 1997 | 6H3-W0078-A0-00 | Model F50TLHV |
| Yamaha | F50TLR | 50 | 4-Stroke | 1997 | 6H3-W0078-A0-00 | Model F50TLRV |
| Yamaha | T60 | 60 | 4-Stroke | 2003-Present | 6H3-W0078-A0-00 | High Thrust models; includes T60TLRB through current |
| Yamaha | FT60 | 60 | 4-Stroke | 2003-Present | 6H3-W0078-A0-00 | High Thrust models; includes FT60B through current |
Technical Specifications
| Specification | Value |
|---|---|
| Product Type | Water Pump Impeller Repair Kit |
| Installation | Lower Unit |
| Weight | ~250 g (8.8 oz) |
| Warranty | Standard Manufacturer Warranty |
| Other Technical Attributes | Complete water pump rebuild kit including impeller, gaskets, and hardware |
Package Contents
- 1 x Cartridge Insert (663-44322-00-00)
- 1 x Impeller (6H3-44352-01/697-44352-00)
- 1 x Water Pump Gasket (6H3-44315-A0-00)
- 1 x Cartridge Outer Plate/Wear Plate (6H3-44323-00-00)
- 1 x Cartridge Gasket (6H3-44324-A0-00)
- 1 x Water Pump Gasket (688-44316-A0-00)
- 1 x O-Ring (93210-46044-00)
- 2 x Bolts (97095-08045-00)
- 2 x Bolts (97395-08055-00)
- 1 x Woodruff Key (90280-03M03-00)
Installation Guide
- Remove the lower unit from the outboard motor following manufacturer safety guidelines.
- Drain any remaining water from the lower unit before disassembly.
- Remove the old water pump housing and impeller carefully to avoid damage to surrounding parts.
- Inspect the housing and replace any damaged parts as necessary.
- Install the new impeller and associated gaskets included in the kit.
- Replace the cartridge insert, outer plate, and gaskets in proper order.
- Secure all bolts and hardware to manufacturer torque specifications.
- Reinstall the lower unit onto the outboard motor.
- Test operation to ensure proper water flow and no leaks.
Troubleshooting & FAQ
- How do I confirm this fits my engine?
- Check the compatible engine models table for your model and year. Use the Yamaha Serial Number Guide linked above to verify your engine details.
- What are the differences between this aftermarket kit and OEM parts?
- 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 often should I replace the water pump impeller?
- It is recommended to inspect and replace the water pump impeller at least once per boating season or every 100 hours of operation, whichever comes first.
- What are common signs of water pump failure?
- Reduced water flow from the cooling system, engine overheating, and unusual noises may indicate water pump failure or impeller damage.
- 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:
- 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
4.1 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
Quiet and Effective frother/mixer and Terrific Customer Service
Zulay Kitchen Powerful Milk Frother Wand
We ordered two Zulay frother wands and after just several months of continuous usage one of the units stopped working and the other one was sporadically working, where sometimes it would run “full power” and at other times it was barely spinning or turning the beverage.
I called Zulay and gave them my Amazon order number. After the Customer Service rep walked me through some minor things to check on the units she was also convinced that the units were probably defective. She had a replacement sent from Zulay along with a mini as a bonus for our troubles! And she had Amazon ship the other replacement unit.
Both shipments arrived promptly within days and we have been using them for months now without any major issues. We use the units (the two “standard” wands) almost every day and they get used two to three times a day. They only take ten to twenty seconds to mix up cocoa powder, hot or cold. And the same goes for different protein powder shakes.
What I especially like about these units is that there have been many times when I have had to use them off-hours, like between 5:00 and 6:00 AM. They are Whisper quiet so nobody gets disturbed. One generally can’t do this level of quiet stirring/mixing with a kitchen hand blender/mixer or shake blenders. These Zulay mixing units have really come in “handy” for us.
We are very Grateful to Amazon for their prompt delivery, and especially to the Customer Service representative at Zulay for her help, and to Zulay for standing behind their products and providing us with terrific and prompt Customer Service! Thank you!
Cheers!
November 3, 2025
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 3, 2025
★★★★★ 4
Rechargeable reliable
Color: Lux Alpha Black, Size: Rechargeable Z1 Motor Max
Nice, very reliable and easy-to-use and clean
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
★★★★★ 5
Great look and very powerful - consider what your wanting to froth/mix - may be too powerful
Color: Lux White, Size: Rechargeable Z1 Motor Max
It's a great frother - but more for large drinks. Very powerful, even on the low speed. I returned it because I want something to mix my collagen and creamer in my coffee. The first time I turned it on it shot half the coffee out of the cup - very powerful. It has a great look, sleek and fits easy in the hand - but for what I needed, two powerful. It would have been nice to have a fully adjustable speed wand like my replaceable battery powered frother.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 1, 2026
★★★★★ 5
Powerful, rechargeable battery, easy to use & clean
Color: Lux Absolute Silver, Size: Rechargeable Z1 Motor Max
2 speeds, easy to change back and forth to different speeds with one click , easily blends 1/4 cup protein powder in 12 oz milk on low speed. Easy to clean: Stick blending wand in tall glass with warm water + dish soap, turn on low speed to clean easily (don’t stick the part that holds the battery in glass). Also of note, chosen by Americas Test Kitchen as best milk frother but I use it to make protein shakes.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 5, 2026
★★★★★ 5
Works great on bullet coffee!!
Color: Lux Alpha Black, Size: Rechargeable Z1 Motor Max
I am really pleased with this frother! Frothers I have used in the past didn’t mix my decaf coffee, 2% milk, and MCT oil as thoroughly as I like (oil and coffee separated). This frother blends everything AND I get a nice layer of frothy milk on top!!! Charge lasts a long and the froth can be submerged all the way up to the button!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 5, 2026
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