Gast 0523/0323, Rv05/rv03, At03/at05 Septic Air Pump Vane Repair Kit

  
Includes 2 O-Rings, 2 Internal Filters, 2 External Filters, 4 Carbon Vanes, and Gaskets. After many years of operation, if your air pump is still running but not putting out any air, then you probably need to change the 4 vanes as well as replacing the filters, gasket, and O-rings included in this kit. These parts fit the Gast 0323/0523, RV03/RV05, and AT03/AT05 Rotary Vane Air Pumps.