Hydrauilc is WIX 51712, engine oil is WIX 51459, and I could not find cross # for fuel filter so I went with Perkins filter #26560201. Engine block heater is a Kim Hotstart that I ordered through Power Great Lakes and there part # is 12700292. Best thing I did for hydraulic system was change fluid and filters. Made hydraulic pump quieter and really sped up the loader. Hope this helps.