Housing for the hydraulic cartridge filter fits on the cooling fan motor. Model Compatibility Track Loaders, Skid Steer Loaders: A300, A770, S150, S160, S175, S185, S205, S220, S250, S300, S330, S450, S510, S530, S550, S570, S590, S630, S650, S750, S770, S850, T180, T190, T250, T300, T320, T450, T550, T590, T630, T650, T750, T770, T870