Johnson Pump F4 MC97 Impeller Kit 2.00 SPX Flow Johnson Pump marine brand impellers are developed and manufactured for maximum flow and long life. Replaces Jabsco No 18653-001. Features Includes o-ring, gasket, and 7gms impeller lubricant Stable pressure delivery over time Significantly longer service life Excellent self-priming capability Minimized swelling Minimized failures due to fatigue Correct impeller dimensions Correct cooling flow sufficient cooling directly at start up Specifications