Carvin Magnum 1.0/1.5 HP 04+ Impeller (05038203R) coatesheater An impeller like this is

An impeller like this is useful because it powers the water-moving action inside the pump

A properly selected replacement helps restore the intended heating relationship while supporting the durability goals of the system

Helps restore quick-return pneumatic switching behavior

Massage 5-point scallop design in gray

Carvin Magnum 1.0/1.5 HP 04+ Impeller (05038203R) coatesheater An impeller like this isThe Carvin Magnum impeller is designed for compatible 1. 0 and 1. 5 horsepower pump applications built for 2004 and later configurations where dependable internal water movement is needed. An impeller is useful because it drives the hydraulic action of the pump, making it essential to circulation performance. This replacement is especially useful when the original impeller is cracked, worn, damaged, or no longer producing the flow the system expects.