Water Pump for Yanmar 3TNC78E 3TN75 3TNC80 Engines – John Deere / Komatsu Applications
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
| Make / Application | Compatible Models / Details |
|---|---|
| Yanmar engines | 3TNC78E, 3TN75, 3TNC80 |
| Equipment brands | Selected John Deere and Komatsu machines using these Yanmar engine configurations |
Product Overview
Circulates coolant through compatible small Yanmar industrial diesel engines used in compact equipment. The engine model is the strongest starting point because John Deere and Komatsu used multiple Yanmar engines across similar machine families.
Overheating, coolant seepage around the pump body, noisy bearings or visible shaft play are typical reasons to replace a water pump. A clogged radiator or failed thermostat can create the same overheating complaint.
Key Features & Performance
- Restores coolant circulation through the engine and radiator.
- Addresses leakage, bearing wear and reduced coolant-flow concerns.
- Model/engine and hub or bolt-pattern checks help avoid similar-looking pump mismatches.
Specifications & Reference Numbers
Before You Order
Confirm the complete Yanmar engine model, pump casting and bolt/pulley arrangement before ordering.
Frequently Asked Questions
Q: What should I verify before ordering?
A: Confirm the complete Yanmar engine model, pump casting and bolt/pulley arrangement before ordering.
Q: Why would this part need to be replaced?
A: Overheating, coolant seepage around the pump body, noisy bearings or visible shaft play are typical reasons to replace a water pump. A clogged radiator or failed thermostat can create the same overheating complaint.
Q: Is this an OEM part?
A: This listing is for a replacement component. Manufacturer names and reference numbers are used to identify fitment; compare the original part number and configuration before ordering.