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 requirements; All in one kit; Self-Priming Capability; MC97/Neoprene for cooling; Specifications: Material: MC97/EPDM; Outer Diameter: 2.56"; Inner Diameter: Splines; Width: 3.15"; Includes: Impeller; Impeller Lubricant;