The old sending unit was a swing arm type, which was replaced with this new one. I looked through the emails and receipts I had saved, but couldn't find the length. The sending unit was delivered in just a few days, so it wasn't down that long. It's really important to have the correct length...
I thought I had a picture of the tank being measured, but I don't. I don't remember the length. I wouldn't trust someone else's measurement because there may be slight variations in tank depth, and you have to be within 1/8" of the bottom for the measurement so the sending unit will fit...
As long as the switch is working, (I used an ohm meter to check) the pump will push fuel from the aux tank to the main tank. The problem I had was the sending unit was bad the first time and not properly calibrated when installed the second time. I worked around that by installing the “float...
This is the original LRA sending unit that was installed:
Tanks Inc. Fuel Level Sending Units TAN-GML $44.99
Tanks Inc. TAN-GML Tanks Inc. Fuel Level Sending Units | Summit Racing -...
I was having a similar issue with my LRA gauge for the 25 gallon tank that was installed by MLO for my 1993 HDJ81VXL. The sending unit was bad and MLO installed a new one from LRA who also sent me a new gauge. LRA was very helpful. MLO installed the new sending unit which still didn't solve the...