If your tractor is new you had better find out if using other than original equipment products will affect your warranty.Your warranty is very important if you have problems in the future.My Kubota Dealer informed me that I must use Genuine Kubota Parts or risk voiding my Warranty.Now that I'm out of Warranty I use Napa filters.I think all manufacturers use the same standards for manufacturing filters and all can cross reference them for you.Food for thought? :thumbsup: Scotty