Yamaha Motors

WATER PUMP RPR.KIT 66T-W0078-01-00

Country of Origin:

Japan

Satisfaction rating

(2 Ratings)

Genuine OEM product

Product	Price	Rating	Comment
Yamaha Motors 66T-W0078-01-00 WATER PUMP RPR.KIT (viewing this product) Genuine OEM product	$63.96~~$79.95~~ In stock 5+ in stock	Best	Genuine Yamaha (packed in Japan) kit with OEM-fit impeller, stainless insert cup and wear plate, and the correct gasket/O-ring/key and hardware. The polished stainless components and consistent hardware finish point to tight manufacturing control, which helps maintain proper sealing and reliable cooling-water flow.
Genuine Yamaha (packed in Japan) kit with OEM-fit impeller, stainless insert cup and wear plate, and the correct gasket/O-ring/key and hardware. The polished stainless components and consistent hardware finish point to tight manufacturing control, which helps maintain proper sealing and reliable cooling-water flow.
EMP 46-46235 Water Pump Repair Kit w/Housing Aftermarket product	$67.14~~$78.99~~ Cross Ship Leaves in 3-5 days Please update to verify the current stock status. Product availability has not been checked in more than 7 days.	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 46-46234 Water Pump Repair Kit Aftermarket product	$53.54~~$62.99~~ Cross Ship Leaves in 3-5 days Please update to verify the current stock status. Product availability has not been checked in more than 7 days.	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.
Peach Motors PM-66T-W0078-00-00 Water Pump Repair Kit (No Housing) Aftermarket product	$70.25 In stock 5+ in stock	Good	Functional replacement kit that mirrors the OEM bill of materials (impeller with metal hub, stainless cup/plate, gasket, O-ring, key and bolts). The Taiwan-made parts show different surface finishes and hardware coating, and the “No housing”/packing-list mismatch suggests less controlled kitting, so impeller material longevity versus OEM is less certain.
Functional replacement kit that mirrors the OEM bill of materials (impeller with metal hub, stainless cup/plate, gasket, O-ring, key and bolts). The Taiwan-made parts show different surface finishes and hardware coating, and the “No housing”/packing-list mismatch suggests less controlled kitting, so impeller material longevity versus OEM is less certain.
Sierra Marine 18-3440 Sierra 3440 Yamaha Water Pump Repair Kit Aftermarket product	$70.95 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 18-3413 Yamaha Water Pump Kits w/Housing Aftermarket product	$117.09 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.
GLM Marine 12272 Water Pump Service Kit (12272) Aftermarket product	$57.30~~$71.62~~ 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 REC66T-W0078-00 WATER PUMP REPAIR KIT (REC66T-W0078-00) Aftermarket product	$32.61~~$36.23~~ Cross Ship Leaves in 3-5 days Please update to verify the current stock status. Product availability has not been checked in more than 7 days.	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.

$63.96~~$79.95~~

You save 20%($15.99)

-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 66T-W0078-01-00 WATER PUMP RPR.KIT (viewing this product) Genuine OEM product	$68.25~~$80.30~~ In stock 5+ in stock	Best	Genuine Yamaha (packed in Japan) kit with OEM-fit impeller, stainless insert cup and wear plate, and the correct gasket/O-ring/key and hardware. The polished stainless components and consistent hardware finish point to tight manufacturing control, which helps maintain proper sealing and reliable cooling-water flow.
Genuine Yamaha (packed in Japan) kit with OEM-fit impeller, stainless insert cup and wear plate, and the correct gasket/O-ring/key and hardware. The polished stainless components and consistent hardware finish point to tight manufacturing control, which helps maintain proper sealing and reliable cooling-water flow.
EMP 46-46235 Water Pump Repair Kit w/Housing Aftermarket product	$67.14~~$78.99~~ Cross Ship Leaves in 3-5 days Please update to verify the current stock status. Product availability has not been checked in more than 7 days.	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 46-46234 Water Pump Repair Kit Aftermarket product	$53.54~~$62.99~~ Cross Ship Leaves in 3-5 days Please update to verify the current stock status. Product availability has not been checked in more than 7 days.	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.
Peach Motors PM-66T-W0078-00-00 Water Pump Repair Kit (No Housing) Aftermarket product	$70.25 In stock 5+ in stock	Good	Functional replacement kit that mirrors the OEM bill of materials (impeller with metal hub, stainless cup/plate, gasket, O-ring, key and bolts). The Taiwan-made parts show different surface finishes and hardware coating, and the “No housing”/packing-list mismatch suggests less controlled kitting, so impeller material longevity versus OEM is less certain.
Functional replacement kit that mirrors the OEM bill of materials (impeller with metal hub, stainless cup/plate, gasket, O-ring, key and bolts). The Taiwan-made parts show different surface finishes and hardware coating, and the “No housing”/packing-list mismatch suggests less controlled kitting, so impeller material longevity versus OEM is less certain.
Sierra Marine 18-3440 Sierra 3440 Yamaha Water Pump Repair Kit Aftermarket product	$70.95 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 18-3413 Yamaha Water Pump Kits w/Housing Aftermarket product	$117.09 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.
GLM Marine 12272 Water Pump Service Kit (12272) Aftermarket product	$57.30~~$71.62~~ 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 REC66T-W0078-00 WATER PUMP REPAIR KIT (REC66T-W0078-00) Aftermarket product	$32.61~~$36.23~~ Cross Ship Leaves in 3-5 days Please update to verify the current stock status. Product availability has not been checked in more than 7 days.	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.

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Product Questions ¹

What parts come in the water pump repair kit?

Hi, this is a complete kit without the housing.

2 Product Reviews

Outstanding service.

Robert Cini — May 12, 2026

Shopping experience: Very good service Repair difficulty: Easy Repair time: Less than 30 mins

KENT RAILVACK — Feb 22, 2022

Parts Fitment

Please verify fitment before ordering.

Brand	Product Line	Model
Evinrude	Outboard	9.8
Yamaha Motors	International	25
Yamaha Motors	International	30
Yamaha Motors	International	40
Yamaha Motors	Outboard	25
Yamaha Motors	Outboard	30
Yamaha Motors	Outboard	40

Supersession Chain

Name	SKU	Superseding SKU
WATER PUMP RPR.KITViewing this product	66T-W0078-01-00	Current
Water Pump Repair Kit	66T-W0078-00-00	66T-W0078-01-00

Aftermarket Interchange

Name	SKU	Price	Brand
Water Pump Repair Kit (No Housing)	PM-66T-W0078-00-00	$70.25	Peach Motors
WATER PUMP REPAIR KIT (REC66T-W0078-00)	REC66T-W0078-00	$32.61	Recmar
Water Pump Repair Kit	46-46234	$53.54	EMP
Water Pump Repair Kit w/Housing	46-46235	$67.14	EMP
Yamaha Water Pump Kits w/Housing	18-3413	$117.09	Sierra Marine
Sierra 3440 Yamaha Water Pump Repair Kit	18-3440	$70.95	Sierra Marine
Water Pump Service Kit (12272)	12272	$57.30	GLM Marine