1Features: Fuel water level sensor is the direct replacement for arm type sender. The advantage of this fuel level sender is durability and reliability, and no moving parts to break. 2Application: No adjustment needed for tank. Fuel water level sending unit support fuel level gauge and water tank gauge for boat, Rv, truck. 3Product Introduction: Sae 5 hole mounting pattern, heavy duty 316 stainless steel unit and sturdy construction. Signal output is 240 ohms?33 ohms. 4Using Detail: The water lever sender is with non linear output, it can only match standard gauges with non linear signals. 5Excellent Performance: Fuel level sender is equipped with gasket, mounting screw, easy and convenient operate, accurate and precise transmission.