F5 Impeller Kit | Johnson Pump 09-1027B-10 OE Johnson Pump MC97 impeller kit fits various Johnson Pump F5 series engine cooling pumps often found on Volvo Penta marine engines. MC97 impeller material for water pumping applications Spline drive hub 12 impeller blades 2 1/4 in. diameter x 1.24 in. width Includes gaskets/o-rings and lubricating glycerin packet Replaces Volvo Penta 21951348 Replaces Johnson Pump 09-1027B-1 Original Johnson Pump