Ashland makes the oil to Kubota spec
Fram oil filters are made by a company called Fram. This company makes many different sizes and types of filters and claims to have a filter for nearly every vehicle on the road.
Wix Filtration Products Company. They make one of the best filters you can buy.
Fram does not have a filter that will cross-over. Baldwin filters cross over for HHTA0-59900 would be a BT9358. I would recommend NOT using Fram filters on your Kubota. Use Kubota, Wix or Baldwin filters.
WIX makes all of NAPA's oil filters
Champion Filters (not connected with Champion Spark Plugs)
Purolator makes their own filters along with many other brands. The company is owned by Clarcor. Clarcor make all types of filters for industry. Water, air, oil, automotive, & hydraulic filters. Their headquarters is located in Franklin, Tenn.
Purolator Inc. is a Canadian company that transports good. The U.S. company, Purolator, makes oil and air filters, owns Purolator Inc.
The Kubota oil filter 15241-32099 crosses to a NAPA #1064 or a Wix # 51064. NAPA filters are made by Wix. Hence the similar numbers.
Champion
Purolator
hastings