.This new water temperature sender switch with OEM number 3073787R1 is well matched with 585, 685 and 895 diesel engines. It precisely detects coolant temperature and transmits timely signals to remind of abnormal heat. Adopting premium internal parts and fully sealed housing, it remains stable under harsh working environments. Made in compliance with OEM standards, it features perfect fitment and reliable performance for daily engine inspection and aftermarket replacement.