F4 Johnson Pump Impeller Kit | Johnson Pump 09-1026B-1 OE Johnson Pump MC97 impeller kit fits various Johnson Pump F4 series engine cooling pumps. MC97 impeller material for water pumping applications Pin drive hub 6 impeller blades 2 in. diameter x .87 in. width x 1/2 in. shaft Includes gaskets and glycerin lubricating packet Replaces Jabsco 18673-0001-P Replaces Johnson Pump 09-1026B Replaces Volvo Penta 804696, 897055, 875808-8, and 3593659 Replaces Westerbeke 21218 Original Johnson Pump