Johnson Pump MC97 F75 w/ Thread Impeller KitThe Johnson Pump F75 MC97 Impeller kit is constructed of a unique MC97 rubber compound that is designed for strict tolerances for excellent functionality. Optimized to provide maximum life through a stable pressure delivery over time with minimized swelling and failures due to fatigue. Worn or damaged impellers can lead to engine breakdowns.Features:Meets engine OM requirementsAll in one kitSelf-Priming CapabilityMC97/Neoprene for coolingSpecifications:Material: MC97/EPDMOuter Diameter: 2.56″Inner Diameter: SplinesWidth: 3.15″Includes:ImpellerImpeller Lubricant