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Yanmar 129155-49801 Thermostat Assembly
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| Opening Temperature | 71°C / 160°F |
|---|---|
| Cooling Type | Water-cooled |
| Valve Type | Wax-element sealed |
| Body Material | Brass |
| Valve Material | Stainless steel |
| Sensor Element Material | Copper wax |
| Cooling System | Glycol-based coolant |
| Thread Size | M30 x 1.5 |
| Overall Height | 45 mm |
| Flange Diameter | 52 mm |
| Net Weight | 0.35 kg |
Manufacturer No.
- 129155-49801
- 129155-49800
OEM Part No.
- 129155-49801
- 129155-49800
- 37A-942-2160
Engine Part No.
- Yanmar 3TNE84
- Yanmar 3TNE84T
- Yanmar 3TNE88
- Yanmar 4TNE84
- Yanmar 4TNE88
- Yanmar 3TNV84
- Yanmar 3TNV88
- Yanmar 4TNV84
- Yanmar 4TNV88
- Yanmar 3TNV82A
- Yanmar 3TNV84T
- Yanmar 4TNV84T
- Komatsu 3D84E
- Komatsu 3D84N
- Komatsu S3D84E
- Komatsu 3D88E
- Komatsu 4D84E
- Komatsu 4D88E
Interchange No.
- VV12915549801
- 72280395
- 72951925
- 77278006
- YM129155-49800
- YM129155-49801
- VV129155-49800
- VY12915549800
Fitment Vehicles
- Komatsu PC27R-8
- Komatsu PC35R-8
- Komatsu PC45R-8
- Komatsu PC50MR-2
- Hitachi ZX27U-2
- Hitachi ZX35U-2
- Kobelco SK30SR-3
- Kobelco SK35SR-3
- Kobelco SK40SR
- Doosan DX35Z
- Takeuchi TB135
- Gehl 3635
- Case CX36B
- John Deere 35D
- Yanmar Vio35
- Yanmar Vio40
Technical engineering specifications and operating parameters for Yanmar 129155-49801 thermostat. Rated opening temperature 71°C (160°F) with sealed wax-element construction for precise coolant flow control. Compatible with Yanmar TNV/TNE series 3- and 4-cylinder diesel engines and Komatsu 3D84E/3D88E/4D84E/4D88E engine variants used in mini excavators, skid steers, and compact loaders.
Material composition includes stainless steel valve, brass body, and copper wax element. Direct replacement for Yanmar OEM 129155-49800 superseded to 129155-49801. Interchanges with aftermarket references VV12915549801, 72280395, 72951925, 77278006, YM129155-49800, YM129155-49801.
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