Jabsco Impeller Kit - 9 Blade - Nitrile - 3-3/4" Diameter x 3-1/2" W, 1" Shaft DiameterKeep your marine engine cooling and auxiliary pumps performing at their best with the Jabsco Impeller Kit 9 Blade, crafted in nitrile for lasting flexibility and reliable service. Designed to fit a wide range of bronze flexible impeller pumps, this kit delivers dependable cooling, bilge, transfer, and general purpose performance on board. Key specifications Material: Nitrile Blade count: 9 Diameter: 3 3 4" Width: 3 1 2" Shaft diameter: 1" Drive type: