Neoprene impeller material for water pumping applications Includes gasket and glycerin lubricating packet Key drive 8 impeller blades 2 9/16 in. diameter x 2 in. width x 5/8 in. shaft Impeller profile M in Jabsco impeller identification charts Replaces Jabsco 04598-0001, 04598-0001-P Replaces Oberdorfer 6603 Genuine Jabsco impeller