Ron, I'm not sure if they are different but our tractors are made by the same manufacturer so they probably are the same. What I did to confirm my findings was, I removed another Zirk grease fitting from the direct opposite side of the tractor and using a thread gauge, measured the thread count, using an micrometers jaws I observed the threads to be tapered. Then the fun started, I went to the local auto parts store and picked up a kit with many different Zirk fittings with different sizes and threads. Having done some research, went to the Allemite web sight and gleaned much info on Zirk fittings. As my problem was the threads were not tapped deep enough to install a new Zirk fitting, I purchased the correct tap and re-tapped the hole. Turned down a socket to pass into the recessed hole that the new Zirk fitting goes into and then installed it. Sorry for the long info here but I feel it is necessary to fully understand why I did what I did. Before I did all this I had been to my Kioti dealer to find out what tap size was necessary to re-tap the hole but they had no idea so that was my reason for doing what I had done. Hope this helps others here, Bob