Found Hydraulic After market filters for GC2300 series. These will not fit the 1700 series. The 1700 use Standard 3/4" 16 tpi. The 2300 is metric 20mm X 1.5 .
Very close threads but not interchangeable. when you remove filter try and span the threads with a 3/4" standard wrench. if it will not span the threads it is metric.
The first one i found was a WIX WL10285. this one wasn't available in my area so crossed with a Baldwin BT8902. it is used on many Kabota's. changed the filter yesterday
and fits perfectly. Napa has a cross as well but not same quality. Hope this finally helps OEM
Very close threads but not interchangeable. when you remove filter try and span the threads with a 3/4" standard wrench. if it will not span the threads it is metric.
The first one i found was a WIX WL10285. this one wasn't available in my area so crossed with a Baldwin BT8902. it is used on many Kabota's. changed the filter yesterday
and fits perfectly. Napa has a cross as well but not same quality. Hope this finally helps OEM