Part Name: Water Temperature Sensor Part Number(s): MD366869 Application / Compatibility: Mitsubishi 4M40 and 6D22 engines; fits Caterpillar CAT 306 and CAT 307 excavators E307/E306 with those engines Function: Monitors engine coolant temperature and transmits data to the ECU or gauge to ensure proper cooling and prevent overheating Condition: Brand New / OEM Standard Replacement Machine Type: Excavator (Caterpillar CAT 306 / CAT 307 with Mitsubishi 4M40 or 6D22 engine) Technical Specifications: Type: Threaded coolant temperature sensor Material: Brass housing with corrosion-resistant finish Thread Size: OEM-standard metric/NPT as per Mitsubishi/CAT specification Connector Type: 2‑pin sealed electrical plug Temperature Range: –40 °C to 150 °C Signal Type: NTC thermistor resistance output Weight: Approx. 0.10 kg Category: Cooling System Components Shipping: Global Shipping Available | Delivery in 3–5 Days