Caterpillar Excavator Fuel Cap with keys. The part number for this cap is 086-1781. As high as fuel is at the moment you are going to need more than just a rag in your fuel fill. Anyone who has lost one of these on a job site knows how handy it would be to have a spare to keep dirt and dust out of your fuel tank. Also it will reduce your chance of vandalism. But don't worry about the price, you'll be getting exactly what you need at a fraction of the cost.
This fuel cap is a direct replacement for Cat p/n 0861781 or 0998548 or 0963100 . This works on the E series excavators and models that replaced them (312 312b 320 etc)
