Fuel level sensor

Triumph thinks so. I have one in my Update Kit but chose not to put it in. I just put a little bend on the original one when I changed the filter. Now the low fuel light comes on at 4.8 gallons used instead of 4.2 gallons used. I'm OK with that.
 
I had heard the new style is easier to install without bending it. Not sure, as it's longer and that is the problem, getting it in the opening as everything is trying to go around the corner.