This brand-new water temperature sensor comes with part numbers 2503679, 5226374 and 15326386 for excavator engines. It accurately detects coolant temperature and transmits real-time signals to the engine control system for overheating protection. Adopting high-grade sensitive components and sealed housing, it withstands harsh construction environments, high heat and vibration. Made in line with OEM standards, it fits perfectly and works reliably for daily excavator maintenance and aftermarket replacement.