Yamaha Motors

Water Pump Repair Kit 6H3-W0078-A0-00

Country of Origin:

Japan

Satisfaction rating

(4 Ratings)

Genuine OEM product

Product	Price	Rating	Comment
Yamaha Motors 6H3-W0078-A0-00 Water Pump Repair Kit (viewing this product) Genuine OEM product	$47.96~~$59.95~~ In stock 5+ in stock	Best	Factory OEM parts will always have a BEST rating unless there is substantial data to prove otherwise.
Factory OEM parts will always have a BEST rating unless there is substantial data to prove otherwise.
EMP 46-03428 Water Pump Service Kit Aftermarket product	$35.69~~$41.99~~ In stock Only 2 remaining	Better	EMP has a default Better rating based on overall brand quality. Some products may have a Best rating however we don't yet have sufficient data to provide an exact rating for this particular product.
EMP has a default Better rating based on overall brand quality. Some products may have a Best rating however we don't yet have sufficient data to provide an exact rating for this particular product.
EMP 46-03435 Water Pump Kit w/ Housing Aftermarket product	$56.09~~$65.99~~ In stock Only 1 remaining	Good	Comprehensive kit that includes a molded housing, stainless cup liner, polished wear plate, and A2-70 (304) stainless fasteners, which are solid material choices. However, the included grey fiber gaskets and Hydra-brand rubber impeller are not OEM-identical, and the Taiwan-sourced rubber component quality is a bigger uncertainty for a critical water-pump application.
Comprehensive kit that includes a molded housing, stainless cup liner, polished wear plate, and A2-70 (304) stainless fasteners, which are solid material choices. However, the included grey fiber gaskets and Hydra-brand rubber impeller are not OEM-identical, and the Taiwan-sourced rubber component quality is a bigger uncertainty for a critical water-pump application.
GLM Marine 12283 Water Pump Service Kit (12283) Aftermarket product	$41.12~~$51.40~~ In stock Only 3 remaining	Good	Complete functional rebuild kit with stainless wear plate and stainless mounting hardware, which can improve corrosion resistance. However it is not an exact match to the OEM kit and the impeller’s rubber compound/QC is less verifiable (a key concern for a critical cooling component).
Complete functional rebuild kit with stainless wear plate and stainless mounting hardware, which can improve corrosion resistance. However it is not an exact match to the OEM kit and the impeller’s rubber compound/QC is less verifiable (a key concern for a critical cooling component).
Peach Motors PM-WPMP-0002A Water Pump Repair Kit (No Plastic Housing) Aftermarket product	$50.40 In stock Only 4 remaining	Unknown	We are working hard to determine a rating based on all available information, including product and manufacturing specifications.
We are working hard to determine a rating based on all available information, including product and manufacturing specifications.
Sierra Marine 18-3428-1 WATER PUMP KIT Aftermarket product	$45.95 No longer availableSearch Nationwide Inventory	Unknown	We are working hard to determine a rating based on all available information, including product and manufacturing specifications.
We are working hard to determine a rating based on all available information, including product and manufacturing specifications.
Sierra Marine 18-3461 Yamaha Water Pump Kits w/Housing Aftermarket product	$81.79 No longer availableSearch Nationwide Inventory	Unknown	We are working hard to determine a rating based on all available information, including product and manufacturing specifications.
We are working hard to determine a rating based on all available information, including product and manufacturing specifications.
Recmar REC6H3-W0078-02 WATER PUMP SERVICE KIT (REC6H3-W0078-02) Aftermarket product	$23.61~~$26.23~~ In stock 5+ in stock	Unknown	We are working hard to determine a rating based on all available information, including product and manufacturing specifications.
We are working hard to determine a rating based on all available information, including product and manufacturing specifications.

$47.96~~$59.95~~

You save 20%($11.99)

-20%

In stock

5+ in stock

Qty

Guaranteed fitment for 7 different models

This is an OEM part manufactured by Yamaha Motors

30 day return policy

PartX Alternatives — This part: Best

Ratings provided by PartX™

Product	Price	Rating	Comment
Yamaha Motors 6H3-W0078-A0-00 Water Pump Repair Kit (viewing this product) Genuine OEM product	$49.05~~$57.70~~ In stock 5+ in stock	Best	Factory OEM parts will always have a BEST rating unless there is substantial data to prove otherwise.
Factory OEM parts will always have a BEST rating unless there is substantial data to prove otherwise.
EMP 46-03428 Water Pump Service Kit Aftermarket product	$35.69~~$41.99~~ In stock Only 2 remaining	Better	EMP has a default Better rating based on overall brand quality. Some products may have a Best rating however we don't yet have sufficient data to provide an exact rating for this particular product.
EMP has a default Better rating based on overall brand quality. Some products may have a Best rating however we don't yet have sufficient data to provide an exact rating for this particular product.
EMP 46-03435 Water Pump Kit w/ Housing Aftermarket product	$56.09~~$65.99~~ In stock Only 1 remaining	Good	Comprehensive kit that includes a molded housing, stainless cup liner, polished wear plate, and A2-70 (304) stainless fasteners, which are solid material choices. However, the included grey fiber gaskets and Hydra-brand rubber impeller are not OEM-identical, and the Taiwan-sourced rubber component quality is a bigger uncertainty for a critical water-pump application.
Comprehensive kit that includes a molded housing, stainless cup liner, polished wear plate, and A2-70 (304) stainless fasteners, which are solid material choices. However, the included grey fiber gaskets and Hydra-brand rubber impeller are not OEM-identical, and the Taiwan-sourced rubber component quality is a bigger uncertainty for a critical water-pump application.
GLM Marine 12283 Water Pump Service Kit (12283) Aftermarket product	$41.12~~$51.40~~ In stock Only 3 remaining	Good	Complete functional rebuild kit with stainless wear plate and stainless mounting hardware, which can improve corrosion resistance. However it is not an exact match to the OEM kit and the impeller’s rubber compound/QC is less verifiable (a key concern for a critical cooling component).
Complete functional rebuild kit with stainless wear plate and stainless mounting hardware, which can improve corrosion resistance. However it is not an exact match to the OEM kit and the impeller’s rubber compound/QC is less verifiable (a key concern for a critical cooling component).
Peach Motors PM-WPMP-0002A Water Pump Repair Kit (No Plastic Housing) Aftermarket product	$50.40 In stock Only 4 remaining	Unknown	We are working hard to determine a rating based on all available information, including product and manufacturing specifications.
We are working hard to determine a rating based on all available information, including product and manufacturing specifications.
Sierra Marine 18-3428-1 WATER PUMP KIT Aftermarket product	$45.95 No longer availableSearch Nationwide Inventory	Unknown	We are working hard to determine a rating based on all available information, including product and manufacturing specifications.
We are working hard to determine a rating based on all available information, including product and manufacturing specifications.
Sierra Marine 18-3461 Yamaha Water Pump Kits w/Housing Aftermarket product	$81.79 No longer availableSearch Nationwide Inventory	Unknown	We are working hard to determine a rating based on all available information, including product and manufacturing specifications.
We are working hard to determine a rating based on all available information, including product and manufacturing specifications.
Recmar REC6H3-W0078-02 WATER PUMP SERVICE KIT (REC6H3-W0078-02) Aftermarket product	$23.61~~$26.23~~ In stock 5+ in stock	Unknown	We are working hard to determine a rating based on all available information, including product and manufacturing specifications.
We are working hard to determine a rating based on all available information, including product and manufacturing specifications.

Product Description

Yamaha factory part. Search for more factory parts & parts diagrams.

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4 Product Reviews

Excellent, easy to find item, simple checkout process and timely shipping. Item was exactly as described.

Pete Swanson — Jul 20, 2026

Repair difficulty: Easy Repair time: Less than 30 mins

Curtis Mosier — Jun 1, 2021

Shopping experience: A+. Great diagrams and super easy process Repair difficulty: Easy Repair time: Less than 30 mins

Jason Daniel — Feb 13, 2019

Repair difficulty: Easy Repair time: Less than 30 mins

David Lanum — Aug 1, 2016

Parts Fitment

Please verify fitment before ordering.

Brand	Product Line	Model
Yamaha Motors	International	EHP
Yamaha Motors	International	50
Yamaha Motors	International	60
Yamaha Motors	International	70
Yamaha Motors	Outboard	50
Yamaha Motors	Outboard	60
Yamaha Motors	Outboard	70

Supersession Chain

Name	SKU	Superseding SKU
Water Pump Repair KitViewing this product	6H3-W0078-A0-00	Current
WATER PUMP REPAIR KIT	6H3-W0078-00-00	6H3-W0078-A0-00

Aftermarket Interchange

Name	SKU	Price	Brand
Water Pump Service Kit (12283)	12283	$41.12	GLM Marine
Water Pump Repair Kit (No Plastic Housing)	PM-WPMP-0002A	$50.40	Peach Motors
WATER PUMP SERVICE KIT (REC6H3-W0078-02)	REC6H3-W0078-02	$23.61	Recmar
WATER PUMP KIT	18-3428-1	$45.95	Sierra Marine
Yamaha Water Pump Kits w/Housing	18-3461	$81.79	Sierra Marine
Water Pump Kit w/ Housing	46-03435	$56.09	EMP
Water Pump Service Kit	46-03428	$35.69	EMP