If you have to buy a new sending unit, perhaps consider one from ISSPRO.
ISSPRO Product Categories
Available in lengths from 6" to 36", for square/rectangular or round tanks. I can't imagine a fuel tank for one of our Cobras needing one that is more than maybe 12" long, but custom jobs (or tanks built for enduros) might be different.
Ohm range is stated as 33 to 240.
I'm assuming they are not adjustable, simply buy the one that fits the depth of your tank and make sure your gauge's resistance is within the range specified for the sending unit.
They also have fuel sending units with the arm/float assembly, if that's what you want.
Sorta costly ($65-$70 for lengths between 6" and 15"), IMHO, but if they solve the problem, they would be worth it.
Cheers from Dugly
