I was at the JD dealer earlier this week to buy some Hydraulic fluid and asked about a fuel gage cap for my 2500. Bryan looked it up as an 850 JD and it was available as parts. I ordered the outside top ring and lens for $16. I cleaned the internal parts and applied the new cap and lens to it and I can now tell how much fuel is in the tank without opening the tank. Thought y'all might need one too. /forums/images/graemlins/wink.gif j