Gast 0523 K478 Rotary Vane Rebuild Kit

Gast 0523 K478 Rotary Vane Rebuild Kit


The Gast 0523 K478 Rotary Vane Rebuild Kit includes replacement parts and instructions for repairing your existing Gast 0523 series rotary vane aerator/pump. Over time, and with enough use, the vanes within your pump will wear down and need replacing. The vanes have a layer of film to protect from general wear that is broken down over time. Remembering to clean the intake filters on your pump will help extend its life between rebuilds and repairs. If your filter is dirty, the dust sucked through the system will scratch the film on the vanes and cause damage which shortens the life of your rotary vanes. Properly functioning rotary vanes are important for maintaining your aerobic septic system and your air pump.

Septic air pumps are integral to the function and maintenance of aerobic septic systems. Septic air pumps supply your aerobic septic system with vital oxygen. The helpful bacteria within the system that break apart biological waste require oxygen to complete this function. Proper aeration means your system will be able to properly settle and digest waste prior to removal and disposal. A non-functioning or damaged aerobic septic air pump can result in malfunction of your septic system, which includes overflow, leakage, an increase in the toxicity of waste, and difficulties in removal and disposal. Checking your aerobic septic system weekly for signs of foul smelling discharge (which indicates a problem) can give you a good indication of the condition of your aerobic septic system.

Gast 0523 K478 Rotary Vane Rebuild Kit Details:

  • (1) Instruction Manual
  • (2) Felt Filters
  • (2) O-Rings
  • (1) Gasket
  • (4) Rotary Vanes

*If you suspect your aerator is damaged beyond requiring a simple rotary vane rebuild (such as malfunctioning bearings or other more severe damage to your septic system itself) we recommend purchasing a replacement Gast 0523 series septic aerator pump or contacting a professional as this kit will not address these concerns.

You (the customer) are responsible for making sure you are following all applicable laws and regulations in your area before replacing your septic air pump yourself. Gast and 0523 K478 are Registered Trademarks of Gast. Under no circumstances is Wholesale Septic Supply representing to the general public that it is an Authorized Distributor, Dealer, or is affiliated with those companies with whom we make product comparisons or with any products we sell.


Ask a Question
  • Will this kit fit Marathon Electric G588DX model 5KH36KNA510X?

    It won't fix the electric motor itself it will fix the pump end where the vanes are. On the top of the unit, there should be a sticker and tell you the model number 0523 is the number you are looking for.

  • What is difference between kit k487, and k487a I have fast pump to aerate pond . Gast 0523 101Q G588DX is model number. Needs rebuilt not sure which kit.

    no real diffrence one comes with all filters one comes with just the vanes. We send the complete kit with either one. 

  • will it ship immediately

    Yes everything ships same day.