Description
Overview:
This genuine Yanmar water sensor is a coolant level detection unit for industrial diesel engines, including the 4TNE88 and 3TNE88. Built with a robust brass threaded body and a sealed polymer top, it monitors coolant/water level in the engine's cooling system to help prevent overheating and avoid costly damage. The sensor provides reliable switching when coolant drops below a safe level, helping operators catch issues early. It is a direct-fit replacement for the original equipment on many Yanmar TNE and TNV engines used in plant, agricultural and power equipment. OEM No. 121250-44901 ensures correct fit and compatibility with the specified engines, maintaining factory performance and reliability in demanding environments.
Key Features:
- Genuine Yanmar part for assured compatibility and performance
- Accurate coolant/water level monitoring to protect against overheating
- Durable brass threaded body with sealed top for corrosion resistance
- Designed for vibration, heat and harsh operating conditions
- Direct replacement for OEM 121250-44901 to minimise downtime
- Simple installation with standard two-blade electrical connector
- Stable switching for reliable low-coolant warnings
- Suitable for a wide range of Yanmar TNE/TNV engines listed below
- Helps maintain engine efficiency and prolong component life
- Supports routine maintenance schedules and fault prevention
Typical Applications:
Used on Yanmar-powered compact excavators, dumpers, loaders, compressors, generators and agricultural machinery to monitor coolant level in the radiator or header tank. Ideal for fleet maintenance, refurbishments and preventative servicing where dependable coolant level detection is required.
Also known as:
Coolant level sensor, water level switch, low coolant switch, engine water level sensor, radiator level sensor, header tank level sensor.
Fits Models:
2TN66E-YL, 2TNV66-DMC, 2TNV66-DMIN, 3TNA72L, 3TNE68, 3TNE82A-ETB, 3TNE82A-EWA, 3TNE88, 3TNV70-STB, 3TNV76-KWA, 3TNV82A-BPTB, 3TNV82A-KWA, 3TNV88-BPTB2, 3TNV88-MWA, 3TNV88-XTBZ, 3TNV88-XWA, 3TNV88-XWA2, 4TNE84, 4TNE84T, 4TNE88, 4TNV84-KWA, 4TNV84T-KWA, 4TNV84T-MWA, 4TNV84T-XWA, 4TNV88-BPTB, 4TNV88-QTB, 4TNV88-QTBZ, 4TNV88-XWA, 4TNV88-XWA2, 4TNV98-VTBZ
Alternate Part Numbers:
121250-44901, 12125044901
Product Specifications
| L&S Part No. | 121250 44901 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Yanmar |
| OEM No. | 121250-44901 |
| Unit of Sale | 1 |
| Applications | 2TN66E-YL, 2TNV66-DMC, 2TNV66-DMIN, 3TNA72L, 3TNE68, 3TNE82A-ETB, 3TNE82A-EWA, 3TNE88, 3TNV70-STB, 3TNV76-KWA, 3TNV82A-BPTB, 3TNV82A-KWA, 3TNV88-BPTB2, 3TNV88-MWA, 3TNV88-XTBZ, 3TNV88-XWA, 3TNV88-XWA2, 4TNE84, 4TNE84T, 4TNE88, 4TNV84-KWA, 4TNV84T-KWA, 4TNV84T-MWA, 4TNV84T-XWA, 4TNV88-BPTB, 4TNV88-QTB, 4TNV88-QTBZ, 4TNV88-XWA, 4TNV88-XWA2, 4TNV98-VTBZ |
| Machine Type | Excavators |
| Fits Brands | Yanmar |
| Fits Models | 3TNE68 | 3TNE82A-ETB | 3TNE88 | 3TNE82A-EWA | 4TNE88 | 4TNE84T | 4TNE84 | 3TNV88-XTBZ | 4TNV88-QTB | 4TNV88-QTBZ | 4TNV98-VTBZ | 3TNV82A-BPTB | 3TNV88-BPTB2 | 4TNV88-BPTB | 3TNV76-KWA | 3TNV82A-KWA | 3TNV88-XWA2 | 3TNV88-XWA | 4TNV84T-XWA | 4TNV88-XWA | 3TNV70-STB | 3TNA72L | 4TNV84T-KWA | 4TNV84T-MWA | 3TNV88-MWA | 4TNV88-XWA2 | 4TNV84-KWA | 2TN66E-YL | 2TNV66-DMC | 2TNV66-DMIN |
