Shacman HOWO Heavy Truck Fuel Sensor DZ91189551121 Electronics And Electrical Parts Fuel level sensor

The Fuel Level Sensor (Part No. DZ91189551121) is a critical electronic component in the fuel system of SHACMAN (Shaanxi Heavy Duty Automobile Co., Ltd.) heavy-duty trucks. Commonly known as a "fuel float" or "fuel sender," this sensor accurately measures the diesel level inside the fuel tank and converts it into an electrical signal for display on the vehicle’s instrument cluster.

Utilizing a resistive wire and magnetic float mechanism, the sensor provides continuous real-time feedback on remaining fuel volume. The movement of the float along the calibrated rod changes the resistance output, which is interpreted by the dashboard gauge to reflect accurate fuel levels—from “Empty” to “Full.”

Designed with durability in mind, this model features a 500mm sensing length, making it ideal for large-capacity fuel tanks used in long-haul transport, mining dump trucks, and construction vehicles. Constructed from corrosion-resistant materials such as high-strength aluminum alloy or stainless steel rods and chemically stable plastic floats, it ensures reliable performance even when exposed to low-quality diesel, biodiesel blends, and moisture-contaminated fuel.