76.5℃ Thermostat 129470-49801 for Yanmar 3JH 4JH 4JH110 4JH2 4JH3 3JH2-E 4JH3-E
$47.99
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$47.99
Regular price
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SKU:
ZZ3F03270
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76.5℃ Thermostat 129470-49801 for Yanmar 3JH 4JH 4JH110 4JH2 4JH3 3JH2-E 4JH3-E
$47.99
In Stock
$47.99
Sale price
$47.99
Regular price
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Compatible Models
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Compatible equipment / model
76.5℃ Thermostat for Yanmar
This 76.5℃ thermostat for Yanmar is a precise engine cooling component designed to maintain proper operating temperatures in a wide range of Yanmar marine diesel engines. It is a direct replacement for Yanmar part number 129470-49801, compatible with 3JH, 4JH, 4JH110, 4JH2, and 4JH3 series models. This 76.5℃ thermostat ensures your Yanmar engine runs efficiently and reliably under load.
Overview
This 76.5℃ thermostat for Yanmar is an essential cooling system part that regulates coolant flow to keep the engine within its optimal temperature range. It is made to fit a comprehensive list of Yanmar 3JH and 4JH marine diesel engines, including the 4JH110, 4JH2, and 4JH3 variants. As a direct replacement for part number 129470-49801, this thermostat helps prevent overheating and promotes longer engine life.
Built For Performance
- Precisely opens at 76.5°C to ensure efficient engine operation
- Replaces OEM Yanmar part number 129470-49801
- High-quality construction resists corrosion and wear in demanding marine environments
- Engineered for a precise fit and reliable sealing
- Consistent thermal response cycle after cycle
Fits These Machines
- for Yanmar 3JH
- for Yanmar 4JH
- for Yanmar 4JH110
- for Yanmar 4JH2
- for Yanmar 4JH3
- for Yanmar 3JH2-E
- for Yanmar 4JH3-E
On-The-Job Use
- Used during scheduled maintenance to replace an aging or defective thermostat
- Essential for winterizing or commissioning a Yanmar diesel engine
- Commonly installed when engine temperature fluctuates or runs hot
- Necessary for restoring complete cooling system integrity on 4JH2 and 4JH3 engines
Specs At A Glance
| Opening Temperature | 76.5°C |
| Part Number(s) | 129470-49801 |
| Engine Series | 3JH, 4JH, 4JH110, 4JH2, 4JH3 |
Good To Know
Q: Why is the correct thermostat temperature important? A: A thermostat with the correct 76.5°C rating ensures the engine reaches its optimal operating temperature quickly, which minimizes fuel consumption and reduces carbon buildup. Using a wrong-rated thermostat can cause poor performance or premature engine wear.
Q: Is installation straightforward? A: Replacing a thermostat is a routine procedure for a mechanic, aligning with the existing housing and gasket. This part is built to OEM specifications, ensuring a proper seal and secure fit for your Yanmar engine.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.