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6J8-W0078-00-00
6J8-W0078-01-00
879136
9-48612
66TW0078H
9-48610
12287
18-3429
6H4-W0078-00-00
6H4-W0078-01-00
6H4-W0079-A0-00
6H4-W0079-A0-00
879135
61A-W0078-A1-00
61A-W0078-A2-00
61A-W0078-A3-00
61A-W0078-A4-00
61A-W0078-00-00
61A-W0078-01-00
64L-W0078-00-00
65L-W0078-A0-00
65L-W0078-A1-00
8M6012787
8M6012788
9-48603
46-84277T
6G5-W0078-A1-00
6G5-W0078-00-00
6G5-W0078-01-00
879129
18-3373
6E5-W0078-A1-00
6E5-W0078-00-00
6E5-W0078-01-00
725-430
750-430
879133
6G5-W0078-A1-00
6G5-W0078-00-00
6G5-W0078-01-00
879129
3397P
679-W0078-A0-00
679-W0078-A1-00
679-W0078-00-00
679-W0078-01-00
725-412
84363M
84363T
9-48604
Fits Yamaha 50, 60 & 70HP Outboards Using 6H3 Water Pump System
Designed for Yamaha outboards using the 6H3-series water pump repair kit. The 3428 Impeller Repair Kit replaces Yamaha OEM kit numbers in the 6H3-W0078 series and is used to service the water pump assembly across multiple Yamaha 2-stroke and select later model platforms.
Compatibility
This impeller repair kit fits a range of Yamaha 50HP, 60HP, and 70HP outboards that use the 6H3-series water pump system. OEM diagrams show this kit used across multiple model designations and year ranges.
Application Chart
| Brand | Engine Model | Horsepower | Engine Type | Notes |
|---|---|---|---|---|
| Yamaha | C60 / E60 / P60 / 60 | 60 HP | 2-Stroke | 6H3 water pump system |
| Yamaha | 70 / C70 | 70 HP | 2-Stroke | 6H3 water pump system |
| Yamaha | T50 / T60 (select models) | 50-60 HP | 4-Stroke | Applications using 6H3 kit family |
This kit fits engines using the 6H3-series water pump assembly. Always confirm using your engine model and OEM part number before ordering.
Part Numbers & Cross References
| Reference Type | Part Number |
|---|---|
| Pro Marine Part | 3428 |
| Cross Reference # | 6H3-W0078-A0-00 |
| Cross Reference # | 6H3-W0078-00-00 |
| Cross Reference # | 6H3-W0078-01-00 |
| Cross Reference # | 6H3-W0078-02-00 |
| Cross Reference # | 18-3428 |
| Cross Reference # | 18-3428-1 |
| Cross Reference # | 18-3461 |
| Cross Reference # | 18-3464 |
| Cross Reference # | 18-3465 |
| Cross Reference # | 725-420 |
| Cross Reference # | 879134 |
What This Kit Is Used For
This impeller repair kit is used to service the water pump assembly and maintain proper engine cooling. The impeller circulates water through the engine to regulate operating temperature.
Over time, impellers wear, harden, or lose efficiency. Replacing the repair kit components helps restore water flow and protect the engine from overheating.
Frequently Asked Questions
What engines does this kit fit?
This kit fits Yamaha 50, 60, and 70HP outboards that use the 6H3-series water pump system.
Does this fit both 2-stroke and 4-stroke engines?
Primarily 2-stroke models, with select later 4-stroke T50/T60 applications that use the same water pump design.
What OEM numbers does this replace?
It replaces Yamaha 6H3-W0078-A0-00, 6H3-W0078-00-00, 6H3-W0078-01-00, and 6H3-W0078-02-00.
When should this be replaced?
Typically during routine maintenance or if cooling performance decreases.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer or technician? We offer dealer pricing for qualified businesses.
Shipping Policy
- Free shipping on orders over $100 (continental U.S.)
- Ships via UPS, USPS, and FedEx
- 5:30 PM EST daily cutoff
- Typical delivery 1–5 business days
30-Day Return Policy
- Returns within 30 days
- Items must be unused and in original packaging
Contact Us
Phone: 941-721-3000
Searchable Part Numbers
Part Number: 3428
Cross Reference #: 6H3-W0078-A0-00, 6H3-W0078-00-00, 6H3-W0078-01-00, 6H3-W0078-02-00, 18-3428, 18-3428-1
Common Searches: Yamaha 60 impeller kit, Yamaha 70 impeller, Yamaha 50 impeller, 6H3 water pump kit
18-3428
18-3428-1
18-3461
18-3464
18-3465
6H3-W0078-A0-00
6H3-W0078-00-00
6H3-W0078-01-00
6H3-W0078-02-00
725-420
879134
663-W0078-A0-00
663-W0078-00-00
725-417
84188M
84188T