Hiblow HP-40 rebuild kit is a full kit with all the components you will need to bring the unit back to factory specifications. It is advised to check your aerator to mack sure it does not have red dust inside before ordering. Hiblow HP 40 have very long lifetimes 10-15 years we have even seen one 25 years old. because of this sometimes when they do stop they are at the end of their usability.
2 chamber blocks