Haskel EXT 420  or 83354 Pump  that has been recently rebuild on 3/5/24 . Pump was clean in a hot tank inside out and rebuild it using all brand new Haskel Seal kits(buna) ,brand new gas barrel sleeve,brand new upper cap and all new springs by an authorized Haskel repair center out in So Cal. called FLW inc. Pump was also function,pressure and leak tested. Upon buyers request I can converted to a 59025.