the LX19030 filter fits with Thermo King Refrigeration Units
the LX1900H filter fits with Cummins QST30 Engine; Cummins ISX15Engines
the LX18925 filter fits with Daewoo Engines, Excavators
the LX18903 filter fits with NAPA GOLD
the LX18850 filter fits with GRAINGER
the LX18812 filter fits with Massey Ferguson Tractors