Description
Overview:
This Genuine Yanmar thermostat is a direct-fit replacement for the Yanmar Y075 engine and a wide range of Yanmar diesel engines across the TNV and TNE series. OEM No. 121850 49811. It regulates coolant flow to maintain a stable operating temperature, helping the engine warm up promptly and preventing overheating during heavy use. Built from robust metal with a corrosion-resistant finish, it is designed for reliable sealing and consistent operation within the thermostat housing. Suitable for construction plant, agricultural and groundcare machinery, generators, and pumps powered by Yanmar engines, it supports efficient running, fuel economy, and reduced wear by keeping the engine at its intended working temperature. A practical, service-friendly choice for routine maintenance and repairs.
Key Features:
- Genuine Yanmar part for assured fit and compatibility (OEM No. 121850 49811)
- Controls coolant flow to keep engine at the correct operating temperature
- Durable metal construction with corrosion-resistant finish for long service life
- Stable, repeatable temperature control to protect against overheating and overcooling
- Direct replacement design for straightforward installation and minimal downtime
- Suitable for a broad range of Yanmar TNV, TNE, LH, and LHA series engines
- Helps maintain performance, efficiency, and consistent warm-up in varied workloads
- Compact insert style to fit neatly within the existing thermostat housing
Typical Applications:
Used in Yanmar-powered compact excavators, site dumpers, loaders, small tractors, mowers and turf equipment, generators, compressors, and water pumps. Ideal for scheduled maintenance or fault rectification where irregular temperature, slow warm-up, or overheating is suspected. Suitable for plant hire fleets and workshop repairs where reliability and quick turnaround are important.
Also known as:
Coolant thermostat, water thermostat, thermostat valve, coolant control valve, engine temperature control valve, wax stat, thermal valve, coolant regulator, water outlet thermostat, engine heat control unit.
Fits Models:
TNV, TNE, LH, LHA
Product Specifications
| L&S Part No. | 121850 49811 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Yanmar |
| OEM No. | 121850-49811 |
| Unit of Sale | 1 |
| Machine Type | Engines |
| Fits Brands | Yanmar |
