Moeller Reed Array Sending Unit. Features protection from corrosion (internal and external to the fuel tank) Standard with a SAE 5 hole mounting bolt pattern. Construction of Head - Engineering grade theermo-polymer. Suitable for gas, ethanol, diesel, bio-diesel and non potable water use. Temperature range -40deg F to 176 deg F , meets ISO 10088, ABYC H-24, 33CFR, 183.590, and ISO 8846 standards. Calibrated to 33-240 Ohm's , Complete with 5-hole gasket and screws. Compatable with dash mounted gauge.