Hello I have a HOPO 550 excavator that I need hydraulic cartridge filters x3. I have remove them all 3 are the same. Only numbers on the filter is Patent #3211292. Ant help would be greatly appreciated. Lancer
wow! that's a tough old bird! I hope you find what you are looking for and have fun with it. Check out this link:
You could check catalogues from filter makers. I know Baldwin has a pretty extensive listing but I'm sure other brands would have too.