MC 97 Replacement Impeller Kit for Sherwood 15000K Impeller KitFeatures:MC 97 Rubber Compound AvailableStrict Tolerance ManufacturingDesigned to Provide Maximum Engine PerformanceUsed by Leading Engine Manufactures As Original EquipmentCorrect Cooling at Engine Start Up and Continued RunningStable PressureLess Material Failure and SwellingExact DimensionsLonger Impeller LifeExact OEM Required DimensionsLongest Use Resulting in Minimum Maintenance CostsBest Engine Cooling ImpellerLeast Wear of BladesBroadest Offering in Marine Marketing Space (Not One Size Fits Many Approach)