Simply measure your tank depth to get the correct swingarm float length for an accurate fuel level.These swingarm, Electric Fuel Gauge Sending Units gather fuel level information from a float which is read on a dash-mounted gauge (sold separately). They fit the industry-standard bolt-hole pattern and 240-33 Ohm gauges. Internal measurement components will not rust or corrode.Key FeaturesMeasure your tank depth and make the swingarm float the exact length for accurate fuel levelFloat rotates for tank wall and baffle clearanceCalibrated to the Industry Standard of 33-240 OhmsRequires connection to a dash mounted gaugeInternal components will not rust or corrodeComplete with 5-hole gasket and screwsSwingarm readings are subject to fuel-slosh fluctuationsSenders are suitable for gasoline, ethanol, diesel, bio-diesel and non-potable waterMeet ISO 10088 & 8846 and ABYC H-24 requirementsInstallation Guide