Fuel Tank Sending Unit (FGA17252) by TRQ®. If you’ve noticed your fuel gauge isn’t working correctly, this can be caused by a faulty fuel tank sending unit that needs to be replaced, and this is where the TRQ fuel sending unit comes into play. Made to fit and perform just like the OEM, this unit will determine and tell the fuel gauge accurate data about the amount of fuel left in the tank so that you’ll know when to visit a gas station before it gets empty.