Replacement impeller for your Rainman watermaker lift pump.
The lift pump in any of the Rainman pressure supply units contains a small rubber impeller and is considered a consumable item. Life of the impeller will vary with use, but in general it might require changing every year or two.
We offer Jabsco Profile D 22405-0001-P as replacement, but there are equivalent spec impellers from other brands (Johnson, Volvo, etc.). As they are small and inexpensive, some customers choose to acquire a spare with their initial Rainman purchase.