87410186 is a spin-on fuel filter/water separator for Case IH equipment, and it is confirmed for the Steiger 435 tractor (along with STX 380, 385, 430, and 485Q models). It is installed in the diesel fuel system to separate water and remove particulate contaminants before the fuel reaches the engine's high-pressure injection components. This protects precision parts such as injectors and the injection pump from corrosion and abrasive wear during demanding field operations.
