Moeller Reed Switch Sending Unit - Fits Tank Depth: 13 InchesCollects fuel level information more consistently than swingarm senders. They achieve this by taking the measurement from the float which is still a moving part. However, the fluctuation is much less because the range of motion is much less. Stainless steel construction provides efficient performance. A direct original equipment manufactured replacement. Calibrated to 33 to 240 Ohms. Sender length is 1 shorter than tank depth.